Materiały źródłowe

• #1 Tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/tachycardia/symptoms-causes/syc-20355127

  In tachycardia, an irregular electrical signal, called an impulse, starts in the upper or lower chambers of the heart. This causes the heart to beat faster. […] Tachycardia (tak-ih-KAHR-dee-uh) is the medical term for a heart rate over 100 beats a minute. Many types of irregular heart rhythms, called arrhythmias, can cause tachycardia. […] Most heart conditions can lead to different forms of tachycardia. Irregular heart rhythms, called arrhythmias, are one cause. An example of an irregular heart rhythm is atrial fibrillation (AFib). […] Other things that may lead to tachycardia include: Fever. Excessive alcohol use, which is defined as 14 or more drinks a week for a man or seven or more drinks a week for a woman. Alcohol withdrawal. Too much caffeine. High or low blood pressure. Changes in the level of minerals in the body, called electrolytes. Examples include potassium, sodium, calcium and magnesium. Certain medicines. Overactive thyroid, called hyperthyroidism. A low number of red blood cells, called anemia. Smoking or nicotine use. Use of illegal stimulants such as cocaine or methamphetamine. Heart attack. […] Sometimes the exact cause of tachycardia is not known.

• #1 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Sinus tachycardia is a regular cardiac rhythm in which the heart beats faster than normal. While it is common to have tachycardia as a physiological response to exercise or stress, it causes concern when it occurs at rest. […] The presence of tachycardia at rest could be the earliest sign of serious pathology. Thus, it is crucial for the clinician to rapidly identify the underlying cause of tachycardia and determine if it indicates urgent evaluation and/or treatment. […] Tachycardia can have physiological or pathological causes. Physiologically it is commonly associated with catecholaminergic triggers, including exercise, stress, pain, and anxiety. […] Pathologically, there are cardiac and non-cardiac etiologies as summarized below: […] Cardiac etiologies: Supraventricular tachycardia is an arrhythmia originating above the ventricles as demonstrated by a narrow QRS complex on an electrocardiogram.

• #1 Tachycardia: Fast Heart Rate | American Heart Association

  https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/tachycardia–fast-heart-rate

  Tachycardia is when the heart beats too fast, at a rate of more than 100 beats per minute, when at rest. […] Issues that may cause an SVT episode include: Age, Anemia, Heart disease, Dehydration, Coronary artery disease; having had cardiac surgery or other heart problems, Congenital heart disease, Other heart conditions, such as Wolff-Parkinson-White syndrome, Chronic lung disease, Excessive caffeine intake, Excessive alcohol intake, Smoking or other tobacco products, drug misuse, including cocaine and methamphetamines, Pregnancy, Menopause, High blood pressure, Certain over-the-counter medications, including those for asthma, colds and allergies. […] A rapid heartbeat may be your body’s response to common conditions such as: Anxiety, Fright, Severe emotional distress, Strenuous exercise, Fever, Some medications and illegal drugs, Pain.

• #1 Ventricular Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532954/

  Ventricular tachycardia (VT) is a wide complex arrhythmia of ventricular origin, defined as three or more consecutive beats at a rate of more than 100 beats per minute. […] Ischemic heart disease is the most common cause of ventricular tachycardia, and 5 to 10% of patients with acute coronary syndrome are found to have ventricular arrhythmias. […] The most common cause of ventricular tachycardia is underlying ischemic heart disease. […] The other causes of ventricular tachycardia include ischemic or non-ischemic dilated cardiomyopathy, adult and congenital structural heart disease, inherited cardiac channelopathies, infiltrative cardiomyopathy, electrolyte imbalances (hypokalemia, hypocalcemia, hypomagnesemia), illicit drugs such as cocaine or methamphetamine, and digitalis toxicity.

• #1 Ventricular tachycardia: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000187.htm

  Ventricular tachycardia (VT) is a rapid heartbeat that starts in the lower chambers of the heart (ventricles). […] The condition can develop as an early or late complication of a heart attack. It may also occur in people with: Cardiomyopathy, Heart failure (also called congestive heart failure), Heart surgery, Myocarditis, Valvular heart disease. […] VT can occur without other heart disease. […] Scar tissue may form in the muscle of the ventricles days, months, or years after a heart attack. This can lead to ventricular tachycardia. […] VT can also be caused by: Anti-arrhythmic drugs (used to treat an abnormal heart rhythm), Changes in blood chemistry (such as a low potassium level), Changes in blood pH (acid-base), Lack of enough oxygen. […] „Torsade de pointes” is a specific form of VT. It is often due to congenital heart disease or the use of certain medicines.

• #1 Ventricular Tachycardia: Causes, Symptoms, and Diagnosis

  https://www.healthline.com/health/ventricular-tachycardia

  Ventricular tachycardia may eventually lead to low blood pressure and ventricular fibrillation, a condition in which the heart beats in a rapid, inadequate heart rhythm. […] The exact cause of ventricular tachycardia isn’t always known. In most cases, it’s triggered by another heart condition. […] Known causes of ventricular tachycardia include: Cardiomyopathy. This is a type of heart disease that weakens the heart muscle. […] Structural heart disease. This form of heart disease may be caused by damage from a previous heart attack or infection, or may result from a heart abnormality present at birth. […] Ischemic heart disease. This heart disease is caused by narrow heart arteries limiting blood flow to the heart, often due to buildup of plaque. It can also be called coronary heart disease.

• #1 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  http://www.dysautonomiainternational.org/page.php?ID=30

  Postural orthostatic tachycardia syndrome (POTS) is a common autonomic nervous system disorder characterized by an excessively fast heart rate and symptoms of lightheadedness upon standing. […] POTS is not caused by anxiety. POTS is a heterogeneous (meaning it has many causes) group of disorders with similar clinical manifestations. […] However, figuring out what is causing the symptoms of POTS in each patient can be very difficult, and in many cases, patients and their doctors will not be able to determine the precise underlying cause. […] When doctors cannot pinpoint the underlying cause of a patient’s POTS, it may be called Primary or Idiopathic POTS. […] While researchers are still working to identify the root causes and pathology of POTS, there are several underlying diseases and conditions that are known to cause or be associated with POTS or POTS like symptoms in some patients.

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• #1 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Ventricular tachycardia is an arrhythmia that originates in the ventricles as demonstrated by a wide QRS on an electrocardiogram. […] Torsades de pointes is a characteristic form of polymorphic ventricular tachycardia that results from either a congenital or acquired prolonged QT interval. […] Myocarditis is an inflammatory process involving cardiac myocytes that is generally secondary to a viral infection. […] Cardiac tamponade is a collection of symptoms secondary to increased pressure in the pericardial space. […] Acute coronary syndrome is a collection of symptoms secondary to ischemic heart disease. […] Non-cardiac pathologic etiologies: Respiratory: Pulmonary Emboli are disorders of the pulmonary vasculature. […] Hypoxia is a clinical state where tissues do not receive the necessary amount of oxygen to support their metabolic demand.

• #1 Signs and Symptoms

  http://www.cardiosmart.org/topics/supraventricular-tachycardia/causes-signs-and-symptoms

  With supraventricular tachycardia (SVT), your heart beats very fast for reasons other than stress or exercise. […] Some types of SVT involve a faulty electrical pathway. Examples include: […] With AVNRT, the most common form of supraventricular tachycardia, there is a slow pathway in the middle of the heart. […] In WPW, there is an extra pathway between the upper and bottom chambers of the heart. […] With atrial tachycardia, a cluster of cells in the upper chamber of the heart takes over and creates a rapid heartbeat.

• #1 Supraventricular Tachycardia (SVT): Types, Causes, & Risk Factors

  https://www.webmd.com/heart-disease/atrial-fibrillation/what-is-supraventricular-tachycardia

  SVT is usually caused by things you can’t control, such as a medical condition or previous surgery. Sometimes, an episode is triggered by stress, exercise, or lack of sleep, though it usually happens without any obvious reason. […] Health conditions that can cause your heart to race include: Lung disease, Thyroid disease, Heart failure or other heart disease, Wolff-Parkinson-White syndrome. […] „Congenital” means something that you’re born with. Some people are born with an extra electrical pathway or abnormal electrical circuits in their heart that can cause arrhythmias like SVT. […] If you’ve had heart surgery, scar tissue can change how electrical signals pass through your heart. […] Your heart is more likely to race when you: Are under a lot of stress, Have anxiety, Drink a lot of caffeine and alcohol, Smoke or use tobacco, Abuse drugs like cocaine or methamphetamine, also called crystal meth, Are pregnant. […] Several health conditions raise your risk, including: Heart disease (coronary artery disease, heart failure, disease of the heart muscle or valve), Lung disease, Thyroid disease, Diabetes, Sleep apnea. […] Smoking and using illicit drugs are also risk factors for SVT.

• #1 Inappropriate sinus tachycardia | Great Ormond Street Hospital

  https://www.gosh.nhs.uk/conditions-and-treatments/conditions-we-treat/inappropriate-sinus-tachycardia/

  Inappropriate sinus tachycardia (IST) is thought to be caused by an abnormality in the sinoatrial (SA) node, although other factors may also affect development of IST. […] One theory is that the sinoatrial (SA) node is abnormal in some way, or that the person is over-sensitive to the hormone adrenaline, which causes the heart to beat faster. It could also be caused by a disturbance to the autonomic nervous system the part of the nervous system responsible for automatic functions such as heart rate and breathing.

• #1 Common Types of Supraventricular Tachycardia: Diagnosis and Management | AAFP

  https://www.aafp.org/pubs/afp/issues/2010/1015/p942.html

  The most common types of supraventricular tachycardia are caused by a reentry phenomenon producing accelerated heart rates. […] AVNRT and AVRT are electrical aberrancies that occur mainly as a result of reentry. […] The most common type of SVT is AVNRT. Most patients with AVNRT do not have structural heart disease; the group most often affected is young, healthy women. […] The second most common type of SVT is AVRT. Patients with this arrhythmia typically present at a younger age than those with AVNRT. This SVT is caused by accessory pathways (or bypass tracts) that serve as aberrant conduits for impulses that pass from the sinoatrial node and travel in an antegrade or retrograde fashion through such tracts, establishing a reentry circuit. […] The third most common type of SVT is AT (approximately 10 percent); it originates from a single atrial focus.

• #1 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Anemia is a disease where the body does not have the appropriate amount of hemoglobin or red blood cells. […] Toxicology: Ingestion of medications can cause tachycardia. […] Withdrawal from substances or medications is an additional source of tachycardia. […] Endocrinologic: Pregnancy results in many physiologic changes, including increased heart rate, cardiac output, and vascular volume. […] Hyperthyroidism is a condition secondary to excess thyroid hormone. […] Pheochromocytomas and paragangliomas are neuroendocrine tumors of the adrenal gland and extra-adrenal autonomic tissue, respectively.

• #1 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Gastrointestinal/Renal/Electrolyte: Hypoglycemia is the state when plasma glucose concentration falls below 70 mg/dL. […] Dehydration results from an imbalance of the total body fluid intake and output. […] Hyperkalemia is a potassium serum level greater than the standard accepted upper limit of normal. […] Hypomagnesemia is a serum magnesium level below 1.6 mg/dL. […] Hypocalcemia is a serum calcium level below 8.5 mg/dL. […] Infectious Disease: Sepsis is a systemic inflammatory illness secondary to an infection that causes organ dysfunction. […] Vascular: Shock is an acute circulatory failure that provides insufficient tissue perfusion and hypoxia. […] Hematologic: Hemorrhage is the disease process where a clinically significant amount of blood is lost after a blood vessel is damaged.

• #1 Ventricular Tachycardia: Causes, Symptoms, and Diagnosis

  https://www.healthline.com/health/ventricular-tachycardia

  Heart failure. Heart failure occurs when the heart is too weak to pump enough blood. […] Myocarditis. Myocarditis happens when the heart muscle is inflamed, most often due to an infection. […] Long QT syndrome. This condition affects the heart’s normal electrical activity and can either be inherited or acquired. […] Congenital coronary artery anomalies. This is a rare condition you can be born with where the coronary artery is in an abnormal location. […] Electrolyte abnormalities. Imbalances in electrolytes, such as magnesium or potassium, in your body may cause ventricular tachycardia. […] Acid-base abnormalities. Acid-base abnormalities may occur if your blood pH is too acidic or not acidic enough, or too alkaline or not alkaline enough. […] In rare cases, ventricular tachycardia can be caused by certain medications, excessive caffeine or alcohol consumption, or intense exercise.

• #1 Understanding Tachycardia-Causes, Dangers, and Management

  https://www.otandp.com/blog/understanding-tachycardia-cause-dangers-management

  Tachycardia can have multiple triggers, ranging from physiological responses to exercise, stress or hyperthermia to medical conditions like heart disease, thyroid and adrenal conditions or electrolyte imbalances. […] Understanding what causes tachycardia is fundamental to addressing the underlying issues, effective treatment and control and preventing recurrence. […] A pulmonary embolism, a blockage in one of the pulmonary arteries in the lungs, can lead to tachycardia as the heart struggles to pump venous blood to the lungs against increased resistance. […] The danger of tachycardia lies in its potential to compromise heart function, effective circulating volume and cause blood clots. […] If left untreated, it can lead to severe complications, including heart failure, thromboembolic events such as stroke or myocardial infarction, or sudden cardiac death.

• #1 Tachycardia: Symptoms, Causes, Diagnosis, Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/what-are-the-types-of-tachycardia

  Tachycardia has many causes. […] Supraventricular tachycardia. This type is most likely to affect people who smoke, drink too much alcohol, or have a lot of caffeine. In some cases, it’s linked to heart attacks. It’s more common in women and children. […] Ventricular tachycardia. The ventricular type is associated with abnormal electrical pathways that are present at birth (long QT), structural problems of the heart (such as cardiomyopathy or coronary disease), medications, or electrolyte imbalance. Sometimes, the reason is unclear. […] Sinus tachycardia. Strenuous exercise, a fever, fear, stress, anxiety, certain medications, and street drugs can lead to this type. It also can be triggered by anemia, an overactive thyroid, or damage from a heart attack or heart failure. […] Many things can cause tachycardia. Electrical signals in your upper (atria) or lower (ventricle) chambers of your heart might misfire. It also can be caused by simple things such as exercise, anxiety, some medications, or street drugs.

• #1 Tachycardia > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/tachycardia

  Tachycardia can occur as a normal or an abnormal heart rate response. […] It can be caused by exercise, fever, pain, anxiety, anemia, hyperthyroidism, or fright. […] However, tachycardia is considered abnormal when ones heart rate increases abruptly and/or is disproportionate to the activity a person is performing. Causes for the latter can be abnormalities in the hearts electrical system, heart scarring, certain drugs, and heart failure, among others. […] Supra-ventricular and ventricular tachycardia often occur without warning and are linked to an abnormal electrical pathway in the heart or a specific area in the heart that acts independently. Conditions linked with these types of tachycardia include: High blood pressure, Structural heart disease, Heart attack, Heart surgery, Heart failure, Myocarditis, a heart infection, Sleep apnea, Having obesity, A family history of tachycardia, Congenital electrical extra connection or bypass tract. […] Sinus tachycardia, on the other hand, may be caused by external stimuli such as: Stress, Elation, Fear, Anxiety, Caffeine, Tobacco, Hyperthyroidism, Anemia, Shortness of breath, Heart failure, Medications, Cocaine or other illegal drugs.

• #1 Tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Tachycardia

  Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. Heart rates above the resting rate may be normal (such as with exercise) or abnormal (such as with electrical problems within the heart). […] Some causes of tachycardia include: Adrenergic storm, Anaemia, Anxiety, Atrial fibrillation, Atrial flutter, Atrial tachycardia, Atrioventricular reentrant tachycardia, AV nodal reentrant tachycardia, Brugada syndrome, Circulatory shock and its various causes (obstructive shock, cardiogenic shock, hypovolemic shock, distributive shock), Dehydration, Dysautonomia, Exercise, Fear, Hypoglycemia, Hypovolemia, Hyperthyroidism, Hyperventilation, Inappropriate sinus tachycardia, Junctional tachycardia, Metabolic myopathy, Multifocal atrial tachycardia, Pacemaker mediated, Pain, Panic attack, Pheochromocytoma, Sinus tachycardia, Sleep deprivation, Supraventricular tachycardia, Ventricular tachycardia, WolffParkinsonWhite syndrome.

• #1 Perioperative Sinus Tachycardia – OpenAnesthesia

  https://www.openanesthesia.org/keywords/perioperative-sinus-tachycardia/

  Pericarditis […] Pericardial tamponade […] Pulmonary embolism (blood, air, fat, etc.) […] Anticholinergics (atropine, glycopyrrolate) […] 2-agonists (albuterol, terbutaline) […] Ketamine […] Desflurane […] Inotropic agents […] Pancuronium […] Stimulants (nicotine, caffeine) […] Illicit drugs (cocaine, amphetamine) […] During central line placement […] Bladder distension (blocked foley catheter) […] Pacemaker malfunction […] Endotracheal tube abutting carina.

• #1 Tachycardia: Causes, Symptoms, Types and Treatment Options | Max Hospital

  https://www.maxhealthcare.in/blogs/tachycardia-causes-symptoms-and-types

  Emotional stress, anxiety, and panic attacks can trigger tachycardia through the release of stress hormones, such as adrenaline, which stimulate the heart and increase heart rate. […] Certain substances, such as caffeine, nicotine, alcohol, and recreational drugs like cocaine and amphetamines, can stimulate the heart and lead to tachycardia. […] Some medications, including certain asthma inhalers, decongestants, thyroid medications, and medications used to treat attention deficit hyperactivity disorder (ADHD), can cause tachycardia as a side effect. […] Imbalances in electrolytes such as potassium, calcium, and magnesium can disrupt the heart’s electrical activity and lead to tachycardia. […] Tachycardia is more common in older adults and tends to occur more frequently in women than in men. […] A family history of heart conditions or arrhythmias may increase the risk of developing tachycardia.

• #1 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #1 Multifocal atrial tachycardia Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/multifocal-atrial-tachycardia

  Multifocal atrial tachycardia (MAT) is a rapid heart rate. It occurs when too many signals (electrical impulses) are sent from the upper heart (atria) to the lower heart (ventricles). […] MAT is most common in people age 50 and over. It is often seen in people with conditions that lower the amount of oxygen in the blood. These conditions include: Chronic obstructive pulmonary disease (COPD), Heart failure (also called congestive heart failure), Lung cancer, Lung failure, Pneumonia, Pulmonary embolism. […] You may be at higher risk for MAT if you have: Coronary heart disease, Diabetes, Had surgery within the last 6 weeks, Overdosed on the drug theophylline, Sepsis. […] If you have a condition that can lead to MAT, that condition should be treated first. […] To reduce the risk for developing MAT, treat the disorders that cause it right away.

• #1 Tachycardia | healthdirect

  https://www.healthdirect.gov.au/tachycardia

  Tachycardia means that your heart is beating much faster than normal, usually more than 100 beats per minute. […] Sometimes tachycardia signifies a health problem. […] Causes of abnormal tachycardia include: anaemia, some medicines, overactive thyroid gland, ischaemic heart disease or a heart attack, other problems with your heart such as cardiomyopathy. […] Sinus tachycardia can be a normal, healthy response to stressors like fear, anxiety, strenuous exercise or even fever. This helps increase the blood flow around your body as needed, and not usually a concern. […] Ventricular tachycardia is when problems with the electrical signals in the lower chambers (ventricles) of your heart cause your heart to beat faster. This affects its ability to pump blood to the rest of your body and can be life-threatening. It’s usually caused by coronary heart disease or cardiomyopathy (problems with your heart muscle).

• #1 Inappropriate Sinus Tachycardia | Kansas City Heart Rhythm Institute

  https://kcheartrhythm.com/services/inappropriate-sinus-tachycardia.dot

  Inappropriate sinus tachycardia (IST) is a condition where the heart beats very rapidly for no known reason. […] There are many potential triggers for IST. IST is sometimes triggered from abnormal nerve signals that increase the heart rate. Other times, doctors find that nerves which lower the heart’s rate are not performing as they should. IST sometimes begins after an individual has an infection from a virus. Additional potential triggers include: Caffeine, Alcohol, Nicotine, Illegal drugs such as cocaine, Overactive thyroid (hyperthyroidism), Fever, Anxiety, Anemia, Very low blood pressure, Heart attack, Heart failure, Lung disease, Pain. […] People who experience tachycardia from any or many of these triggers can be considered to potentially have IST. Yet some people found to have IST experience a higher heart rate even when none of these triggers are present.

• #1 Sinus Tachycardia: Causes, Symptoms, and Treatment

  https://www.healthline.com/health/sinus-tachycardia

  Sinus tachycardia refers to a faster-than-usual heart rhythm. […] Other causes of sinus tachycardia may include: anxiety or emotional distress, fever, some medications, such as those used in allergy or mental health treatment, pain, stimulants, such as caffeine or nicotine, illegal drugs, such as cocaine. […] Other potential but less common causes of sinus tachycardia may include the following underlying health conditions: anemia, an infection, damage to your heart muscle, such as from a previous heart attack, hyperthyroidism, low blood pressure, lung disease, pulmonary embolism, severe bleeding. […] Sinus tachycardia with no known cause is called inappropriate sinus tachycardia (IST). […] Underlying health issues, such as infections, lung disease, or conditions like pulmonary embolism can cause sinus tachycardia.

• #1 Ventricular Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532954/

  Inherited cardiac channelopathies are more common in young individuals. […] Idiopathic ventricular tachycardia is an uncommon class of ventricular tachycardia. […] The most common idiopathic ventricular tachycardia arises from outflow tracts, mitral/tricuspid annulus, and fascicles of the left bundle branch. […] Ventricular tachycardia predicts a higher risk of death after acute myocardial infarction.

• #1 Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/catecholaminergic-polymorphic-ventricular-tachycardia

  CPVT is caused by a change in the genetic code for a particular cardiac protein that causes it to leak calcium into the heart. The extra calcium affects the hearts electrical system, causing extra heartbeats from the lower chambers of the heart. […] CPVT may cause the heart to stop beating.

• #1 Quick Facts:Ventricular Tachycardia – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/quick-facts-heart-and-blood-vessel-disorders/abnormal-heart-rhythms/ventricular-tachycardia

  Ventricular tachycardia happens when some of the cells in your ventricle start acting like pacemaker cells. If they go faster than your normal pacemaker cells, they can take over your heart and make it beat very fast. […] Sustained ventricular tachycardia usually happens in older adults with heart problems, such as a: Heart attack, Cardiomyopathy (a problem in the walls of the heart that makes it hard for your heart to pump blood). […] Other causes may include: Long QT syndrome (an abnormal electrical circuit that may trigger a sudden ventricular tachycardia or even more dangerous rhythms when you exercise or feel stressed), Certain medicines, Brugada syndrome (an inherited heart condition that increases the risk of ventricular tachycardia and other arrhythmias).

• #1 Evaluation of tachycardia – Differential diagnosis of symptoms | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/830

  Tachycardia, generally defined as a heart rate 100 bpm, can be a normal physiologic response to a systemic process or a manifestation of underlying pathology. […] Sinus tachycardia is a common cause of tachycardia that can often be mistaken for an arrhythmia. […] Sinus tachycardia is the most common cause of sustained tachycardia, as it is usually a normal physiologic response to emotional or physical stimulation. […] Atrial fibrillation is the most common arrhythmia in clinical practice, with an estimated global prevalence of 50 million in 2020. […] The prevalence of inappropriate sinus tachycardia is not well known and the underlying mechanisms are likely to be multifactorial, but patients are often young (age 15 to 50 years) and female. […] The prevalence of ventricular tachyarrhythmia is highly dependent on its type and duration. In patients with a history of previous MI, the incidence of sustained monomorphic ventricular tachyarrhythmia depends on the size of the infarction and the overall left ventricular function.

• #1 Tachycardia (Fast Heart Rate) in Children | Lurie Children’s

  https://www.luriechildrens.org/en/specialties-conditions/tachycardia/

  Tachycardia is an arrhythmia, or abnormal heart beat, and some types need no treatment at all or may go away on their own. […] A few are even genetic, and we can trace them in families. […] VT starts in the lower chambers of the heart. It is far rarer than SVT and is often related to other heart conditions. […] LQTS is related to how long it takes the lower chambers of the heart to contract and release. […] Its often genetic, and once we find it, we can treat it. […] Dangerous tachycardias that are linked to sudden cardiac arrest always need treatment. […] But the treatment depends on the childs age and family history (since some arrhythmias are genetic). […] In our Cardiovascular Genetics Clinic, we treat whole families with inherited tachycardia arrhythmias.

• #1 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

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  https://www.advocatechildrenshospital.com/services/heart/conditions-we-treat/sinus-tachycardia-treatment

  Sinus tachycardia is an increase in heart rate that occurs when the hearts natural pacemaker, the sinus node, sends abnormally quick electrical signals. […] Tachycardia is the medical term used to describe a heart rate that exceeds 100 beats per minute. […] If your child is experiencing sinus tachycardia, its typically because their cardiovascular system is reacting to something or is experiencing stress and thats a normal reaction. Here are a few precipitating factors that can cause a reaction of sinus tachycardia: Alcohol, Caffeine, Dehydration, Drugs, Exercise, Fear, Fever, Medications, Nervousness. […] Sinus tachycardia can also be caused by underlying health issues including anemia, high or low blood pressure, diabetes, congenital heart abnormalities, heart disease or an overactive thyroid (hyperthyroidism). […] Sinus tachycardia causes can include conditions that put excessive strain on the heart such as anemia, high or low blood pressure, diabetes, congenital heart abnormalities, heart disease and an overactive thyroid (hyperthyroidism).

• #1 Supraventricular tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Supraventricular_tachycardia

  These abnormal rhythms start from either the atria or atrioventricular node. […] They are generally due to one of two mechanisms: re-entry or increased automaticity. […] A normal resting heart rate is 60 to 100 beats per minute. A resting heart rate of more than 100 beats per minute is defined as a tachycardia. […] Radiofrequency ablation has revolutionized the treatment of tachycardia caused by a re-entrant pathway. […] This therapy has further improved the treatment options for AVNRT (and other SVTs with pathways close to the AV node), widening the application of curative ablation to young patients with relatively mild but still troublesome symptoms who might not have accepted the risk of requiring a pacemaker.

• #1 Supraventricular Tachycardia (SVT) in Children | Children’s Hospital of Philadelphia

  https://www.chop.edu/conditions-diseases/supraventricular-tachycardia-svt

  Supraventricular tachycardia is by far the most common heart arrhythmia seen in infants and children. […] There are many types of SVT, but the most common form in children occurs when there is an extra electrical connection between the top and bottom chambers of the heart, called an accessory electrical pathway or bypass tract. […] Sometimes, SVT can be triggered by activity or other stimulants such as caffeine or decongestants.

• #1 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #1 Tachycardia: Causes, Symptoms, Types and Treatment Options | Max Hospital

  https://www.maxhealthcare.in/blogs/tachycardia-causes-symptoms-and-types

  Tachycardia can be caused by a variety of factors, including: […] Various heart conditions can lead to tachycardia, including atrial fibrillation, atrial flutter, supraventricular tachycardia (SVT), ventricular tachycardia, and ventricular fibrillation. […] Underlying heart diseases, such as coronary artery disease, heart failure, cardiomyopathy, and congenital heart defects, can predispose individuals to tachycardia by affecting the heart’s structure and function. […] Hypertension (high blood pressure) can increase the workload on the heart, leading to tachycardia as the heart tries to compensate for the increased demand. […] Hyperthyroidism, a condition characterized by an overactive thyroid gland, can cause tachycardia due to the excess production of thyroid hormones, which stimulate the heart.

• #1 Tachycardia Causes, Symptoms, and Treatments

  https://www.upmc.com/services/heart-vascular/conditions/tachycardia

  Tachycardia is a type of heart rhythm disorder that causes an abnormally fast heartbeat of more than 100 beats per minute at rest. […] It is caused by changes in the hearts electrical impulses. […] Atrial fibrillation (AFib) is the most common type of tachycardia caused by an irregular heart rhythm. […] Tachycardia occurs normally in response to exercise or other common conditions. It can also occur as a result of a problem with the hearts electrical system or other cardiovascular disorders, such as: An enlarged heart. Coronary artery disease. Heart valve disease. High blood pressure. Scar tissue that forms around the heart after a heart attack or heart surgery. […] People may be at higher risk of tachycardia due to: Aging. Family history of heart rhythm disorders. Other cardiac conditions, such as high blood pressure. […] Ventricular tachycardiacan be life-threatening and requires immediate medical attention.

• #1 Sinus tachycardia – WikEM

  https://wikem.org/wiki/Sinus_tachycardia

  Sinus rhythm at a rate above the upper limit of normal […] Usually seen as a secondary response to a primary medical condition […] Causes of sinus tachycardia include emotional or psychiatric causes, response to fever, SIRS, dehydration/hypovolemia, anemia, drug/alcohol intoxication, drug/alcohol withdrawal, anion gap acidosis, hyperthyroidism, PE, CHF, cardiac tamponade, myocardial contusion, cardiac valvular disease, hyper or hypoglycemia, myocardial infarction, and pheochromocytoma. […] Non-arrhythmic cardiac causes include acute coronary syndrome, cardiomyopathy, congenital heart disease, congestive heart failure, mitral valve prolapse, pacemaker complication, pericarditis, myocarditis, and valvular disease. […] Psychiatric causes include panic attack, anxiety, and somatic symptom disorder. […] Miscellaneous causes include anemia, hyperthyroidism, pulmonary embolism, dehydration, sepsis, and pheochromocytoma.

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• #1 Tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Tachycardia

  Inappropriate sinus tachycardia (IST) is a diagnosis of exclusion, a rare but benign type of cardiac arrhythmia that may be caused by a structural abnormality in the sinus node. It can occur in seemingly healthy individuals with no history of cardiovascular disease. Other causes may include autonomic nervous system deficits, autoimmune response, or drug interactions.

• #1 Inappropriate Sinus Tachycardia Causes and Treatment

  https://www.verywellhealth.com/inappropriate-sinus-tachycardia-1745220

  Inappropriate sinus tachycardia (IST) is a condition in which a persons heart rate at rest and during exertion is abnormally elevated for no apparent reason. […] The main cause of IST is not yet known. Experts theorize that people who have IST may be hypersensitive to adrenaline—a little bit of adrenaline causes a marked rise in heart rate. This may be due to: Neurohormonal dysregulation, a problem in which the neuroendocrine system is not properly regulating the heart rate […] Studies show IST often first occurs after a precipitating event. Common triggers include: Anxiety, Depression, Extreme emotional stress, Infectious illness, Pregnancy. […] Researchers are not sure of the exact cause of IST, but it may be triggered by pregnancy, infection, or extreme emotional stress.

• #1 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #1 Tachycardia (High Heart Rate): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/22108-tachycardia

  Tachycardia causes include: […] Your heart normally responds to electrical signals from your hearts sinoatrial (SA) node. These signals control how often your heart beats. When youve had a scare or are very emotional or anxious, or are exercising, your heart may send signals more frequently for a short time. This is called sinus tachycardia and goes away when you calm down or rest. […] You may also have a fast heart rate from substance or tobacco use or from too much caffeine or alcohol. […] Tachycardia can happen in any of your hearts four chambers. It occurs when you have an issue with electrical signals there. […] Some kinds of tachycardia can come back regularly and can be more serious. Tachycardias can be mild, while others cause issues that are moderately harmful. […] Risk factors for tachycardia include: […] Without treatment, certain types of tachycardia can cause your kidneys, liver or heart to fail. Tachycardia also can lead to: […] Although medications cant cure tachycardia, they can help you regulate it. Ablation may be a long-term solution to certain types of tachycardia. It may even cure them.

• #1 Tachycardia: Causes, Symptoms, and Treatment

  https://elitekingwood.com/tachycardia-causes-symptoms-and-treatment/

  Tachycardia is a medical condition characterized by a rapid heart rate, exceeding the normal resting rate. […] To comprehend tachycardia, it’s crucial to explore its underlying causes. Various factors contribute to the development of this condition, ranging from lifestyle choices to underlying medical issues. One common cause is an abnormality in the heart’s electrical system, disrupting the regular rhythm of heartbeats. This can result from congenital heart defects, aging, or damage to the heart muscle. […] Other causes include high blood pressure, smoking, excessive alcohol consumption, and certain medical conditions like diabetes and hyperthyroidism. […] Certain risk factors may predispose individuals to tachycardia. Age, family history, and pre-existing heart conditions can elevate the risk. Lifestyle choices such as smoking, a sedentary lifestyle, and excessive caffeine intake may also contribute.

• #1 Tachycardia: Symptoms & Treatment | Mass General Brigham

  https://www.massgeneralbrigham.org/en/patient-care/services-and-specialties/heart/conditions/tachycardia

  Tachycardia can be mild or the result of something more life-threatening. […] Causes of high heart rate can range from increased exertion to a severe heart condition or another underlying health issue. Common causes of tachycardia can include fever, exercise, stress, alcohol and drug use, electrolyte imbalance, and too much caffeine. […] Underlying health issues that can contribute to tachycardia include: Hyperthyroidism, Anemia, Lung disease, High blood pressure, Heart disease, Heart failure. […] Complications of tachycardia depend on what is causing the increased heart rate. […] Some types of tachycardia are extremely severe and, if left untreated, could lead to significant health complications such as heart failure, stroke, or even death. […] Ventricular tachycardia typically occurs when there is damage to the heart muscle. The scar tissue builds up around the heart and prevents the electrical signals from firing correctly. This may be caused by a prior heart attack, heart failure, cardiomyopathy, myocarditis, or heart valve disease. It can also be caused by medications or the use of stimulants.

• #1 Common Types of Supraventricular Tachycardia: Diagnosis and Management | AAFP

  https://www.aafp.org/pubs/afp/issues/2010/1015/p942.html

  The history may reveal the likely etiology underlying the SVT. […] Prolonged and persistent elevated heart rates produced by some types of SVT have been known to cause a type of cardiomyopathy; therefore, a high index of suspicion for the diagnosis is important. […] Atrioventricular nodal blocking agents (e.g., verapamil, diltiazem, beta blockers, digoxin) in AVNRT and AVRT with retrograde conduction are only about 30 to 60 percent effective. […] Ablative therapy of SVT is based on the observation that most arrhythmias arise from a focal origin critically dependent on conduction through a defined anatomic structure.

• #2 Tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Tachycardia

  Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. Heart rates above the resting rate may be normal (such as with exercise) or abnormal (such as with electrical problems within the heart). […] Some causes of tachycardia include: Adrenergic storm, Anaemia, Anxiety, Atrial fibrillation, Atrial flutter, Atrial tachycardia, Atrioventricular reentrant tachycardia, AV nodal reentrant tachycardia, Brugada syndrome, Circulatory shock and its various causes (obstructive shock, cardiogenic shock, hypovolemic shock, distributive shock), Dehydration, Dysautonomia, Exercise, Fear, Hypoglycemia, Hypovolemia, Hyperthyroidism, Hyperventilation, Inappropriate sinus tachycardia, Junctional tachycardia, Metabolic myopathy, Multifocal atrial tachycardia, Pacemaker mediated, Pain, Panic attack, Pheochromocytoma, Sinus tachycardia, Sleep deprivation, Supraventricular tachycardia, Ventricular tachycardia, WolffParkinsonWhite syndrome.

• #2 Tachycardia > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/tachycardia

  Tachycardia can occur as a normal or an abnormal heart rate response. […] It can be caused by exercise, fever, pain, anxiety, anemia, hyperthyroidism, or fright. […] However, tachycardia is considered abnormal when ones heart rate increases abruptly and/or is disproportionate to the activity a person is performing. Causes for the latter can be abnormalities in the hearts electrical system, heart scarring, certain drugs, and heart failure, among others. […] Supra-ventricular and ventricular tachycardia often occur without warning and are linked to an abnormal electrical pathway in the heart or a specific area in the heart that acts independently. Conditions linked with these types of tachycardia include: High blood pressure, Structural heart disease, Heart attack, Heart surgery, Heart failure, Myocarditis, a heart infection, Sleep apnea, Having obesity, A family history of tachycardia, Congenital electrical extra connection or bypass tract. […] Sinus tachycardia, on the other hand, may be caused by external stimuli such as: Stress, Elation, Fear, Anxiety, Caffeine, Tobacco, Hyperthyroidism, Anemia, Shortness of breath, Heart failure, Medications, Cocaine or other illegal drugs.

• #2 Sinus Tachycardia: Causes, Symptoms, and Treatment

  https://www.healthline.com/health/sinus-tachycardia

  Sinus tachycardia refers to a faster-than-usual heart rhythm. […] Other causes of sinus tachycardia may include: anxiety or emotional distress, fever, some medications, such as those used in allergy or mental health treatment, pain, stimulants, such as caffeine or nicotine, illegal drugs, such as cocaine. […] Other potential but less common causes of sinus tachycardia may include the following underlying health conditions: anemia, an infection, damage to your heart muscle, such as from a previous heart attack, hyperthyroidism, low blood pressure, lung disease, pulmonary embolism, severe bleeding. […] Sinus tachycardia with no known cause is called inappropriate sinus tachycardia (IST). […] Underlying health issues, such as infections, lung disease, or conditions like pulmonary embolism can cause sinus tachycardia.

• #2 Ventricular Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532954/

  Ventricular tachycardia (VT) is a wide complex arrhythmia of ventricular origin, defined as three or more consecutive beats at a rate of more than 100 beats per minute. […] Ischemic heart disease is the most common cause of ventricular tachycardia, and 5 to 10% of patients with acute coronary syndrome are found to have ventricular arrhythmias. […] The most common cause of ventricular tachycardia is underlying ischemic heart disease. […] The other causes of ventricular tachycardia include ischemic or non-ischemic dilated cardiomyopathy, adult and congenital structural heart disease, inherited cardiac channelopathies, infiltrative cardiomyopathy, electrolyte imbalances (hypokalemia, hypocalcemia, hypomagnesemia), illicit drugs such as cocaine or methamphetamine, and digitalis toxicity.

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  https://www.advocatehealth.com/health-services/advocate-heart-institute/conditions/heart-rhythm/tachycardia

  Ventricular tachycardia is usually the result of an underlying heart condition, such as coronary artery disease, cardiomyopathy, mitral valve prolapse or valvular heart disease. […] Factors that can cause tachycardia include: Age, Obesity, Smoking, High blood pressure, Genetics or inherited defects, Excessive caffeine consumption, Use of alcohol and drugs, such as amphetamines and cocaine, Side effect of medications, including over-the-counter medicines and herbal supplements, Diabetes, sleep apnea, thyroid disease, anemia, lung disease or other conditions, Changes or damage to your heart from a heart attack, cardiomyopathy or other heart conditions.

• #2 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Ventricular tachycardia is an arrhythmia that originates in the ventricles as demonstrated by a wide QRS on an electrocardiogram. […] Torsades de pointes is a characteristic form of polymorphic ventricular tachycardia that results from either a congenital or acquired prolonged QT interval. […] Myocarditis is an inflammatory process involving cardiac myocytes that is generally secondary to a viral infection. […] Cardiac tamponade is a collection of symptoms secondary to increased pressure in the pericardial space. […] Acute coronary syndrome is a collection of symptoms secondary to ischemic heart disease. […] Non-cardiac pathologic etiologies: Respiratory: Pulmonary Emboli are disorders of the pulmonary vasculature. […] Hypoxia is a clinical state where tissues do not receive the necessary amount of oxygen to support their metabolic demand.

• #2 Tachycardia: Symptoms, Causes, Diagnosis, and Treatment

  https://www.health.com/tachycardia-8659086

  Tachycardia is the medical term for an elevated resting heart rate, which can occur when your heart beats more than 100 times per minute. Several factors can cause your heart to beat too fastanxiety, underlying health conditions, problems with the heart’s electrical system, and more. […] The most common causes of tachycardia include: Anxiety or emotional distress, Pain, Strenuous exercise, Fever, Medications, Problems with the heart’s electrical system. […] The most common cause of SVT is an electrical circuit problem in the heart. This happens when the normal electrical signals travel from the upper chambers to the ventricles and then go back to the atria through an extra pathway. This creates a loop that makes the heart beat too fast. […] A problem with your heart’s electrical system can also lead to ventricular tachycardia. In contrast to SVT, this type of tachycardia occurs with the electrical signals that travel in the ventricles (the two lower heart chambers). Several factors can raise your risk of this condition, including: Reduced blood flow in the coronary arteries, Cardiomyopathy (abnormally thick heart muscle), Side effects of certain medications, Substance use, Sarcoidosis (tiny inflammatory cells caused by an overactive immune system), Structural heart disease, Congenital heart disease.

• #2 Common Types of Supraventricular Tachycardia: Diagnosis and Management | AAFP

  https://www.aafp.org/pubs/afp/issues/2010/1015/p942.html

  The most common types of supraventricular tachycardia are caused by a reentry phenomenon producing accelerated heart rates. […] AVNRT and AVRT are electrical aberrancies that occur mainly as a result of reentry. […] The most common type of SVT is AVNRT. Most patients with AVNRT do not have structural heart disease; the group most often affected is young, healthy women. […] The second most common type of SVT is AVRT. Patients with this arrhythmia typically present at a younger age than those with AVNRT. This SVT is caused by accessory pathways (or bypass tracts) that serve as aberrant conduits for impulses that pass from the sinoatrial node and travel in an antegrade or retrograde fashion through such tracts, establishing a reentry circuit. […] The third most common type of SVT is AT (approximately 10 percent); it originates from a single atrial focus.

• #2 Tachycardia (Fast Heart Rate) in Children | Lurie Children’s

  https://www.luriechildrens.org/en/specialties-conditions/tachycardia/

  Tachycardia is an arrhythmia, or abnormal heart beat, and some types need no treatment at all or may go away on their own. […] A few are even genetic, and we can trace them in families. […] VT starts in the lower chambers of the heart. It is far rarer than SVT and is often related to other heart conditions. […] LQTS is related to how long it takes the lower chambers of the heart to contract and release. […] Its often genetic, and once we find it, we can treat it. […] Dangerous tachycardias that are linked to sudden cardiac arrest always need treatment. […] But the treatment depends on the childs age and family history (since some arrhythmias are genetic). […] In our Cardiovascular Genetics Clinic, we treat whole families with inherited tachycardia arrhythmias.

• #2 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Anemia is a disease where the body does not have the appropriate amount of hemoglobin or red blood cells. […] Toxicology: Ingestion of medications can cause tachycardia. […] Withdrawal from substances or medications is an additional source of tachycardia. […] Endocrinologic: Pregnancy results in many physiologic changes, including increased heart rate, cardiac output, and vascular volume. […] Hyperthyroidism is a condition secondary to excess thyroid hormone. […] Pheochromocytomas and paragangliomas are neuroendocrine tumors of the adrenal gland and extra-adrenal autonomic tissue, respectively.

• #2 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Gastrointestinal/Renal/Electrolyte: Hypoglycemia is the state when plasma glucose concentration falls below 70 mg/dL. […] Dehydration results from an imbalance of the total body fluid intake and output. […] Hyperkalemia is a potassium serum level greater than the standard accepted upper limit of normal. […] Hypomagnesemia is a serum magnesium level below 1.6 mg/dL. […] Hypocalcemia is a serum calcium level below 8.5 mg/dL. […] Infectious Disease: Sepsis is a systemic inflammatory illness secondary to an infection that causes organ dysfunction. […] Vascular: Shock is an acute circulatory failure that provides insufficient tissue perfusion and hypoxia. […] Hematologic: Hemorrhage is the disease process where a clinically significant amount of blood is lost after a blood vessel is damaged.

• #2 Tachycardia: Symptoms, Causes, Diagnosis, Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/what-are-the-types-of-tachycardia

  Tachycardia has many causes. […] Supraventricular tachycardia. This type is most likely to affect people who smoke, drink too much alcohol, or have a lot of caffeine. In some cases, it’s linked to heart attacks. It’s more common in women and children. […] Ventricular tachycardia. The ventricular type is associated with abnormal electrical pathways that are present at birth (long QT), structural problems of the heart (such as cardiomyopathy or coronary disease), medications, or electrolyte imbalance. Sometimes, the reason is unclear. […] Sinus tachycardia. Strenuous exercise, a fever, fear, stress, anxiety, certain medications, and street drugs can lead to this type. It also can be triggered by anemia, an overactive thyroid, or damage from a heart attack or heart failure. […] Many things can cause tachycardia. Electrical signals in your upper (atria) or lower (ventricle) chambers of your heart might misfire. It also can be caused by simple things such as exercise, anxiety, some medications, or street drugs.

• #2 Tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/tachycardia/symptoms-causes/syc-20355127

  In tachycardia, an irregular electrical signal, called an impulse, starts in the upper or lower chambers of the heart. This causes the heart to beat faster. […] Tachycardia (tak-ih-KAHR-dee-uh) is the medical term for a heart rate over 100 beats a minute. Many types of irregular heart rhythms, called arrhythmias, can cause tachycardia. […] Most heart conditions can lead to different forms of tachycardia. Irregular heart rhythms, called arrhythmias, are one cause. An example of an irregular heart rhythm is atrial fibrillation (AFib). […] Other things that may lead to tachycardia include: Fever. Excessive alcohol use, which is defined as 14 or more drinks a week for a man or seven or more drinks a week for a woman. Alcohol withdrawal. Too much caffeine. High or low blood pressure. Changes in the level of minerals in the body, called electrolytes. Examples include potassium, sodium, calcium and magnesium. Certain medicines. Overactive thyroid, called hyperthyroidism. A low number of red blood cells, called anemia. Smoking or nicotine use. Use of illegal stimulants such as cocaine or methamphetamine. Heart attack. […] Sometimes the exact cause of tachycardia is not known.

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  https://www.alliedacademies.org/articles/understanding-tachycardia-causes-symptoms-and-treatment-29052.html

  Tachycardia is a condition characterized by an abnormally high heart rate, generally defined as a heart rate exceeding 100 beats per minute in adults. […] The causes of tachycardia are multifaceted, ranging from benign factors to serious medical conditions. Conditions such as anemia, hyperthyroidism, heart disease, and hypertension can precipitate tachycardia. Additionally, congenital heart defects and cardiomyopathy are significant contributors. […] Excessive caffeine or alcohol intake, smoking, and the use of certain drugs (e.g., stimulants or decongestants) can trigger tachycardia. Imbalances in electrolytes such as potassium, calcium, and magnesium can disrupt the electrical activity of the heart, leading to tachycardia. Some prescription and over-the-counter medications can cause tachycardia as a side effect. […] Understanding the various types, causes, and treatments is crucial for effective management and prevention of complications.

• #2 Multifocal atrial tachycardia Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/multifocal-atrial-tachycardia

  Multifocal atrial tachycardia (MAT) is a rapid heart rate. It occurs when too many signals (electrical impulses) are sent from the upper heart (atria) to the lower heart (ventricles). […] MAT is most common in people age 50 and over. It is often seen in people with conditions that lower the amount of oxygen in the blood. These conditions include: Chronic obstructive pulmonary disease (COPD), Heart failure (also called congestive heart failure), Lung cancer, Lung failure, Pneumonia, Pulmonary embolism. […] You may be at higher risk for MAT if you have: Coronary heart disease, Diabetes, Had surgery within the last 6 weeks, Overdosed on the drug theophylline, Sepsis. […] If you have a condition that can lead to MAT, that condition should be treated first. […] To reduce the risk for developing MAT, treat the disorders that cause it right away.

• #2 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #2 Ventricular Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532954/

  Inherited cardiac channelopathies are more common in young individuals. […] Idiopathic ventricular tachycardia is an uncommon class of ventricular tachycardia. […] The most common idiopathic ventricular tachycardia arises from outflow tracts, mitral/tricuspid annulus, and fascicles of the left bundle branch. […] Ventricular tachycardia predicts a higher risk of death after acute myocardial infarction.

• #2 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  http://www.dysautonomiainternational.org/page.php?ID=30

  POTS itself is not a disease; it is simply a cluster of symptoms that are frequently seen together. […] This is why the 'S’ in POTS stands for „Syndrome.” […] Idiopathic simply means „of an unknown origin.” […] This is a partial list: -Amyloidosis; -Autoimmune Diseases such as Autoimmune Autonomic Ganglionopathy, Sjogren’s Syndrome, Lupus, Sarcoidosis, Antiphospholipid Syndrome; -Chiari Malformation -Deconditioning; -Delta Storage Pool Deficiency -Diabetes and pre-diabetes -Ehlers Danlos Syndrome – a collagen protein disorder than can lead to joint hypermobility and „stretchy” veins; -Genetic Disorders/Abnormalities; -Infections such as Mononucleosis, Epstein Barr Virus, Lyme Disease, extra-pulmonary Mycoplasma pneumonia and Hepatitis C; -Multiple Sclerosis; -Mitochondrial Diseases; -Mast Cell Activation Disorders; -Paraneoplastic Syndrome – rare small tumors of the lung, ovary, breast and pancreas that produce antibodies; -Toxicity from alcoholism, chemotherapy and heavy metal poisoning. -Traumas, pregnancy or surgery; -Vaccinations; -Vitamin Deficiencies/Anemia.

• #2 Tachycardia: Causes, Symptoms, Types and Treatment Options | Max Hospital

  https://www.maxhealthcare.in/blogs/tachycardia-causes-symptoms-and-types

  Emotional stress, anxiety, and panic attacks can trigger tachycardia through the release of stress hormones, such as adrenaline, which stimulate the heart and increase heart rate. […] Certain substances, such as caffeine, nicotine, alcohol, and recreational drugs like cocaine and amphetamines, can stimulate the heart and lead to tachycardia. […] Some medications, including certain asthma inhalers, decongestants, thyroid medications, and medications used to treat attention deficit hyperactivity disorder (ADHD), can cause tachycardia as a side effect. […] Imbalances in electrolytes such as potassium, calcium, and magnesium can disrupt the heart’s electrical activity and lead to tachycardia. […] Tachycardia is more common in older adults and tends to occur more frequently in women than in men. […] A family history of heart conditions or arrhythmias may increase the risk of developing tachycardia.

• #2 Supraventricular Tachycardia (SVT) | Frankel Cardiovascular Center | Michigan Medicine

  https://www.umcvc.org/conditions-treatments/supraventricular-tachycardia-svt

  Supraventricular tachycardia (SVT) is a rapid heart rate (tachycardia) usually caused when electrical impulses originating at or above the atrioventricular node, or AV node (part of the heart’s electrical control system which controls rate) are out of synch. […] Though most episodes of SVT are caused by the hearts electrical system, other causes include certain drugs, health conditions, surgery and familial disorders, such as Wolff-Parkinson-White syndrome.

• #2 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #2 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #2 Tachycardia Causes, Symptoms, and Treatments

  https://www.upmc.com/services/heart-vascular/conditions/tachycardia

  Tachycardia is a type of heart rhythm disorder that causes an abnormally fast heartbeat of more than 100 beats per minute at rest. […] It is caused by changes in the hearts electrical impulses. […] Atrial fibrillation (AFib) is the most common type of tachycardia caused by an irregular heart rhythm. […] Tachycardia occurs normally in response to exercise or other common conditions. It can also occur as a result of a problem with the hearts electrical system or other cardiovascular disorders, such as: An enlarged heart. Coronary artery disease. Heart valve disease. High blood pressure. Scar tissue that forms around the heart after a heart attack or heart surgery. […] People may be at higher risk of tachycardia due to: Aging. Family history of heart rhythm disorders. Other cardiac conditions, such as high blood pressure. […] Ventricular tachycardiacan be life-threatening and requires immediate medical attention.

• #2 Sinus tachycardia – WikEM

  https://wikem.org/wiki/Sinus_tachycardia

  Sinus rhythm at a rate above the upper limit of normal […] Usually seen as a secondary response to a primary medical condition […] Causes of sinus tachycardia include emotional or psychiatric causes, response to fever, SIRS, dehydration/hypovolemia, anemia, drug/alcohol intoxication, drug/alcohol withdrawal, anion gap acidosis, hyperthyroidism, PE, CHF, cardiac tamponade, myocardial contusion, cardiac valvular disease, hyper or hypoglycemia, myocardial infarction, and pheochromocytoma. […] Non-arrhythmic cardiac causes include acute coronary syndrome, cardiomyopathy, congenital heart disease, congestive heart failure, mitral valve prolapse, pacemaker complication, pericarditis, myocarditis, and valvular disease. […] Psychiatric causes include panic attack, anxiety, and somatic symptom disorder. […] Miscellaneous causes include anemia, hyperthyroidism, pulmonary embolism, dehydration, sepsis, and pheochromocytoma.

• #2 Supraventricular Tachycardia (SVT): Types, Causes, & Risk Factors

  https://www.webmd.com/heart-disease/atrial-fibrillation/what-is-supraventricular-tachycardia

  SVT is usually caused by things you can’t control, such as a medical condition or previous surgery. Sometimes, an episode is triggered by stress, exercise, or lack of sleep, though it usually happens without any obvious reason. […] Health conditions that can cause your heart to race include: Lung disease, Thyroid disease, Heart failure or other heart disease, Wolff-Parkinson-White syndrome. […] „Congenital” means something that you’re born with. Some people are born with an extra electrical pathway or abnormal electrical circuits in their heart that can cause arrhythmias like SVT. […] If you’ve had heart surgery, scar tissue can change how electrical signals pass through your heart. […] Your heart is more likely to race when you: Are under a lot of stress, Have anxiety, Drink a lot of caffeine and alcohol, Smoke or use tobacco, Abuse drugs like cocaine or methamphetamine, also called crystal meth, Are pregnant. […] Several health conditions raise your risk, including: Heart disease (coronary artery disease, heart failure, disease of the heart muscle or valve), Lung disease, Thyroid disease, Diabetes, Sleep apnea. […] Smoking and using illicit drugs are also risk factors for SVT.

• #2 Inappropriate Sinus Tachycardia Causes and Treatment

  https://www.verywellhealth.com/inappropriate-sinus-tachycardia-1745220

  Inappropriate sinus tachycardia (IST) is a condition in which a persons heart rate at rest and during exertion is abnormally elevated for no apparent reason. […] The main cause of IST is not yet known. Experts theorize that people who have IST may be hypersensitive to adrenaline—a little bit of adrenaline causes a marked rise in heart rate. This may be due to: Neurohormonal dysregulation, a problem in which the neuroendocrine system is not properly regulating the heart rate […] Studies show IST often first occurs after a precipitating event. Common triggers include: Anxiety, Depression, Extreme emotional stress, Infectious illness, Pregnancy. […] Researchers are not sure of the exact cause of IST, but it may be triggered by pregnancy, infection, or extreme emotional stress.

• #2 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #2 Tachycardia: Symptoms & Treatment | Mass General Brigham

  https://www.massgeneralbrigham.org/en/patient-care/services-and-specialties/heart/conditions/tachycardia

  Tachycardia can be mild or the result of something more life-threatening. […] Causes of high heart rate can range from increased exertion to a severe heart condition or another underlying health issue. Common causes of tachycardia can include fever, exercise, stress, alcohol and drug use, electrolyte imbalance, and too much caffeine. […] Underlying health issues that can contribute to tachycardia include: Hyperthyroidism, Anemia, Lung disease, High blood pressure, Heart disease, Heart failure. […] Complications of tachycardia depend on what is causing the increased heart rate. […] Some types of tachycardia are extremely severe and, if left untreated, could lead to significant health complications such as heart failure, stroke, or even death. […] Ventricular tachycardia typically occurs when there is damage to the heart muscle. The scar tissue builds up around the heart and prevents the electrical signals from firing correctly. This may be caused by a prior heart attack, heart failure, cardiomyopathy, myocarditis, or heart valve disease. It can also be caused by medications or the use of stimulants.

• #2 Supraventricular tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Supraventricular_tachycardia

  These abnormal rhythms start from either the atria or atrioventricular node. […] They are generally due to one of two mechanisms: re-entry or increased automaticity. […] A normal resting heart rate is 60 to 100 beats per minute. A resting heart rate of more than 100 beats per minute is defined as a tachycardia. […] Radiofrequency ablation has revolutionized the treatment of tachycardia caused by a re-entrant pathway. […] This therapy has further improved the treatment options for AVNRT (and other SVTs with pathways close to the AV node), widening the application of curative ablation to young patients with relatively mild but still troublesome symptoms who might not have accepted the risk of requiring a pacemaker.

• #2 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Sinus tachycardia is a regular cardiac rhythm in which the heart beats faster than normal. While it is common to have tachycardia as a physiological response to exercise or stress, it causes concern when it occurs at rest. […] The presence of tachycardia at rest could be the earliest sign of serious pathology. Thus, it is crucial for the clinician to rapidly identify the underlying cause of tachycardia and determine if it indicates urgent evaluation and/or treatment. […] Tachycardia can have physiological or pathological causes. Physiologically it is commonly associated with catecholaminergic triggers, including exercise, stress, pain, and anxiety. […] Pathologically, there are cardiac and non-cardiac etiologies as summarized below: […] Cardiac etiologies: Supraventricular tachycardia is an arrhythmia originating above the ventricles as demonstrated by a narrow QRS complex on an electrocardiogram.

• #3 Tachycardia: Fast Heart Rate | American Heart Association

  https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/tachycardia–fast-heart-rate

  Tachycardia is when the heart beats too fast, at a rate of more than 100 beats per minute, when at rest. […] Issues that may cause an SVT episode include: Age, Anemia, Heart disease, Dehydration, Coronary artery disease; having had cardiac surgery or other heart problems, Congenital heart disease, Other heart conditions, such as Wolff-Parkinson-White syndrome, Chronic lung disease, Excessive caffeine intake, Excessive alcohol intake, Smoking or other tobacco products, drug misuse, including cocaine and methamphetamines, Pregnancy, Menopause, High blood pressure, Certain over-the-counter medications, including those for asthma, colds and allergies. […] A rapid heartbeat may be your body’s response to common conditions such as: Anxiety, Fright, Severe emotional distress, Strenuous exercise, Fever, Some medications and illegal drugs, Pain.

• #3 Tachycardia | healthdirect

  https://www.healthdirect.gov.au/tachycardia

  Tachycardia means that your heart is beating much faster than normal, usually more than 100 beats per minute. […] Sometimes tachycardia signifies a health problem. […] Causes of abnormal tachycardia include: anaemia, some medicines, overactive thyroid gland, ischaemic heart disease or a heart attack, other problems with your heart such as cardiomyopathy. […] Sinus tachycardia can be a normal, healthy response to stressors like fear, anxiety, strenuous exercise or even fever. This helps increase the blood flow around your body as needed, and not usually a concern. […] Ventricular tachycardia is when problems with the electrical signals in the lower chambers (ventricles) of your heart cause your heart to beat faster. This affects its ability to pump blood to the rest of your body and can be life-threatening. It’s usually caused by coronary heart disease or cardiomyopathy (problems with your heart muscle).

• #3 Tachycardia Causes, Symptoms, and Treatments

  https://www.upmc.com/services/heart-vascular/conditions/tachycardia

  Tachycardia is a type of heart rhythm disorder that causes an abnormally fast heartbeat of more than 100 beats per minute at rest. […] It is caused by changes in the hearts electrical impulses. […] Atrial fibrillation (AFib) is the most common type of tachycardia caused by an irregular heart rhythm. […] Tachycardia occurs normally in response to exercise or other common conditions. It can also occur as a result of a problem with the hearts electrical system or other cardiovascular disorders, such as: An enlarged heart. Coronary artery disease. Heart valve disease. High blood pressure. Scar tissue that forms around the heart after a heart attack or heart surgery. […] People may be at higher risk of tachycardia due to: Aging. Family history of heart rhythm disorders. Other cardiac conditions, such as high blood pressure. […] Ventricular tachycardiacan be life-threatening and requires immediate medical attention.

• #3

• #3 Tachycardia > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/tachycardia

  Tachycardia can occur as a normal or an abnormal heart rate response. […] It can be caused by exercise, fever, pain, anxiety, anemia, hyperthyroidism, or fright. […] However, tachycardia is considered abnormal when ones heart rate increases abruptly and/or is disproportionate to the activity a person is performing. Causes for the latter can be abnormalities in the hearts electrical system, heart scarring, certain drugs, and heart failure, among others. […] Supra-ventricular and ventricular tachycardia often occur without warning and are linked to an abnormal electrical pathway in the heart or a specific area in the heart that acts independently. Conditions linked with these types of tachycardia include: High blood pressure, Structural heart disease, Heart attack, Heart surgery, Heart failure, Myocarditis, a heart infection, Sleep apnea, Having obesity, A family history of tachycardia, Congenital electrical extra connection or bypass tract. […] Sinus tachycardia, on the other hand, may be caused by external stimuli such as: Stress, Elation, Fear, Anxiety, Caffeine, Tobacco, Hyperthyroidism, Anemia, Shortness of breath, Heart failure, Medications, Cocaine or other illegal drugs.

• #3 Sinus Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553128/

  Gastrointestinal/Renal/Electrolyte: Hypoglycemia is the state when plasma glucose concentration falls below 70 mg/dL. […] Dehydration results from an imbalance of the total body fluid intake and output. […] Hyperkalemia is a potassium serum level greater than the standard accepted upper limit of normal. […] Hypomagnesemia is a serum magnesium level below 1.6 mg/dL. […] Hypocalcemia is a serum calcium level below 8.5 mg/dL. […] Infectious Disease: Sepsis is a systemic inflammatory illness secondary to an infection that causes organ dysfunction. […] Vascular: Shock is an acute circulatory failure that provides insufficient tissue perfusion and hypoxia. […] Hematologic: Hemorrhage is the disease process where a clinically significant amount of blood is lost after a blood vessel is damaged.

• #3 Tachycardia causes – wikidoc

  https://www.wikidoc.org/index.php/Tachycardia_causes

  Life threatening causes of tachycardia include cardiac tamponade, cardiogenic shock, pulseless ventricular tachycardia, and stroke. Other common causes of tachycardia are anemia, exercise, fever, and hyperthyroidism. […] Life Threatening Causes: Cardiac tamponade, Cardiogenic shock, Cyanide poisoning, Myocardial infarction, Pulmonary embolism, Pulseless ventricular tachycardia, Stroke. […] Common Causes: Anemia, Electrolyte imbalance, Exercise, Fever, Hyperthyroidism, Hypertension, Pain.

• #3 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #3 Tachycardia: Causes, Symptoms, Types and Treatment Options | Max Hospital

  https://www.maxhealthcare.in/blogs/tachycardia-causes-symptoms-and-types

  Emotional stress, anxiety, and panic attacks can trigger tachycardia through the release of stress hormones, such as adrenaline, which stimulate the heart and increase heart rate. […] Certain substances, such as caffeine, nicotine, alcohol, and recreational drugs like cocaine and amphetamines, can stimulate the heart and lead to tachycardia. […] Some medications, including certain asthma inhalers, decongestants, thyroid medications, and medications used to treat attention deficit hyperactivity disorder (ADHD), can cause tachycardia as a side effect. […] Imbalances in electrolytes such as potassium, calcium, and magnesium can disrupt the heart’s electrical activity and lead to tachycardia. […] Tachycardia is more common in older adults and tends to occur more frequently in women than in men. […] A family history of heart conditions or arrhythmias may increase the risk of developing tachycardia.

• #3 Tachycardia: Symptoms & Treatment | Mass General Brigham

  https://www.massgeneralbrigham.org/en/patient-care/services-and-specialties/heart/conditions/tachycardia

  Tachycardia can be mild or the result of something more life-threatening. […] Causes of high heart rate can range from increased exertion to a severe heart condition or another underlying health issue. Common causes of tachycardia can include fever, exercise, stress, alcohol and drug use, electrolyte imbalance, and too much caffeine. […] Underlying health issues that can contribute to tachycardia include: Hyperthyroidism, Anemia, Lung disease, High blood pressure, Heart disease, Heart failure. […] Complications of tachycardia depend on what is causing the increased heart rate. […] Some types of tachycardia are extremely severe and, if left untreated, could lead to significant health complications such as heart failure, stroke, or even death. […] Ventricular tachycardia typically occurs when there is damage to the heart muscle. The scar tissue builds up around the heart and prevents the electrical signals from firing correctly. This may be caused by a prior heart attack, heart failure, cardiomyopathy, myocarditis, or heart valve disease. It can also be caused by medications or the use of stimulants.

• #3 Dysautonomia International: Postural Orthostatic Tachycardia Syndrome

  http://www.dysautonomiainternational.org/page.php?ID=30

  POTS itself is not a disease; it is simply a cluster of symptoms that are frequently seen together. […] This is why the 'S’ in POTS stands for „Syndrome.” […] Idiopathic simply means „of an unknown origin.” […] This is a partial list: -Amyloidosis; -Autoimmune Diseases such as Autoimmune Autonomic Ganglionopathy, Sjogren’s Syndrome, Lupus, Sarcoidosis, Antiphospholipid Syndrome; -Chiari Malformation -Deconditioning; -Delta Storage Pool Deficiency -Diabetes and pre-diabetes -Ehlers Danlos Syndrome – a collagen protein disorder than can lead to joint hypermobility and „stretchy” veins; -Genetic Disorders/Abnormalities; -Infections such as Mononucleosis, Epstein Barr Virus, Lyme Disease, extra-pulmonary Mycoplasma pneumonia and Hepatitis C; -Multiple Sclerosis; -Mitochondrial Diseases; -Mast Cell Activation Disorders; -Paraneoplastic Syndrome – rare small tumors of the lung, ovary, breast and pancreas that produce antibodies; -Toxicity from alcoholism, chemotherapy and heavy metal poisoning. -Traumas, pregnancy or surgery; -Vaccinations; -Vitamin Deficiencies/Anemia.

• #3 Tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Tachycardia

  Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. Heart rates above the resting rate may be normal (such as with exercise) or abnormal (such as with electrical problems within the heart). […] Some causes of tachycardia include: Adrenergic storm, Anaemia, Anxiety, Atrial fibrillation, Atrial flutter, Atrial tachycardia, Atrioventricular reentrant tachycardia, AV nodal reentrant tachycardia, Brugada syndrome, Circulatory shock and its various causes (obstructive shock, cardiogenic shock, hypovolemic shock, distributive shock), Dehydration, Dysautonomia, Exercise, Fear, Hypoglycemia, Hypovolemia, Hyperthyroidism, Hyperventilation, Inappropriate sinus tachycardia, Junctional tachycardia, Metabolic myopathy, Multifocal atrial tachycardia, Pacemaker mediated, Pain, Panic attack, Pheochromocytoma, Sinus tachycardia, Sleep deprivation, Supraventricular tachycardia, Ventricular tachycardia, WolffParkinsonWhite syndrome.

• #3 Tachycardia: Causes, Symptoms, and Treatment

  https://elitekingwood.com/tachycardia-causes-symptoms-and-treatment/

  Tachycardia is a medical condition characterized by a rapid heart rate, exceeding the normal resting rate. […] To comprehend tachycardia, it’s crucial to explore its underlying causes. Various factors contribute to the development of this condition, ranging from lifestyle choices to underlying medical issues. One common cause is an abnormality in the heart’s electrical system, disrupting the regular rhythm of heartbeats. This can result from congenital heart defects, aging, or damage to the heart muscle. […] Other causes include high blood pressure, smoking, excessive alcohol consumption, and certain medical conditions like diabetes and hyperthyroidism. […] Certain risk factors may predispose individuals to tachycardia. Age, family history, and pre-existing heart conditions can elevate the risk. Lifestyle choices such as smoking, a sedentary lifestyle, and excessive caffeine intake may also contribute.

• #3 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #3 Tachycardia Causes, Signs and Symptoms – Bay Biosciences

  https://baybiosciences.com/tachycardia-causes-signs-and-symptoms/

  Tachycardia is a condition that makes the heart beat more than 100 beats per minute. […] A problem with the electrical signals can result in a faster-than-normal heartbeat. This condition is known as tachycardia. […] Sinus tachycardia is usually caused by anxiety, stress, strenuous exercise, a fever, fear, certain medications, and illegal drugs. It can also be triggered by anemia, an overactive thyroid, or damage from a heart attack or heart failure. […] Supraventricular tachycardia is most likely to affect patients who smoke, drink too much alcohol, or have a lot of caffeine. In some cases it’s linked to heart attacks. […] The ventricular type is associated with abnormal electrical pathways which are present at birth (long QT), structural problems of the heart such as a cardiomyopathy or coronary disease, medications, or electrolyte imbalance.

• #3 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #3 Supraventricular tachycardia | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/cardiovascular-disease/heart-disease/supraventricular-tachycardia/

  Some people are born with an abnormality of the hearts natural wiring or conduction system. This allows a short circuit to develop. Under certain circumstances, this allows the heart to race very fast. […] Common causes of supraventricular tachycardia in people at risk of the condition include: stress, anxiety, a change in posture, some medications, alcohol, caffeine, smoking, recreational drugs.

• #3 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #3 Ventricular Tachycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK532954/

  Ventricular tachycardia (VT) is a wide complex arrhythmia of ventricular origin, defined as three or more consecutive beats at a rate of more than 100 beats per minute. […] Ischemic heart disease is the most common cause of ventricular tachycardia, and 5 to 10% of patients with acute coronary syndrome are found to have ventricular arrhythmias. […] The most common cause of ventricular tachycardia is underlying ischemic heart disease. […] The other causes of ventricular tachycardia include ischemic or non-ischemic dilated cardiomyopathy, adult and congenital structural heart disease, inherited cardiac channelopathies, infiltrative cardiomyopathy, electrolyte imbalances (hypokalemia, hypocalcemia, hypomagnesemia), illicit drugs such as cocaine or methamphetamine, and digitalis toxicity.

• #3 Causes, symptoms and treatment for ventricular tachycardia | Norton Healthcare

  https://nortonhealthcare.com/services-and-conditions/heart-and-vascular-care/services/ventricular-tachycardia/

  V-tach is when the electrical signals in your heart are not working as they should. V-tach causes include: […] Having a heart attack or other heart condition that caused scarring of heart tissue (structural heart disease). There are several conditions that fall in this category including myocarditis (inflammation around the heart), cardiomyopathy and heart valve disease […] Poor blood flow to the heart muscle due to coronary artery disease […] Congenital heart diseases, which means a heart condition you are born with […] Imbalance of electrolytes, which are substances that help the heart’s electrical system work — such as potassium, sodium, calcium and magnesium […] Side effects of medication […] Use of stimulants such as cocaine or methamphetamine. […] Sometimes, there is no known cause for V-tach. This is called idiopathic (id-ee-oh-PATH-ick) V-tach. That means there is no obvious reason for the irregular heartbeat – you haven’t had any of the conditions listed above, there is no scarring, etc.

• #3 Inappropriate Sinus Tachycardia Causes and Treatment

  https://www.verywellhealth.com/inappropriate-sinus-tachycardia-1745220

  Inappropriate sinus tachycardia (IST) is a condition in which a persons heart rate at rest and during exertion is abnormally elevated for no apparent reason. […] The main cause of IST is not yet known. Experts theorize that people who have IST may be hypersensitive to adrenaline—a little bit of adrenaline causes a marked rise in heart rate. This may be due to: Neurohormonal dysregulation, a problem in which the neuroendocrine system is not properly regulating the heart rate […] Studies show IST often first occurs after a precipitating event. Common triggers include: Anxiety, Depression, Extreme emotional stress, Infectious illness, Pregnancy. […] Researchers are not sure of the exact cause of IST, but it may be triggered by pregnancy, infection, or extreme emotional stress.

• #3 Syndrome of Inappropriate Sinus Tachycardia – Cardiovascular Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/cardiovascular-disorders/specific-cardiac-arrhythmias/syndrome-of-inappropriate-sinus-tachycardia

  Syndrome of inappropriate sinus tachycardia refers to sinus node dysfunction causing rapid, physiologically inappropriate, heart rates. […] The etiology of the syndrome of inappropriate sinus tachycardia is unknown. Potential components include Increased intrinsic sinus node automaticity, Decreased vagal sensitivity, Augmented beta-adrenergic sensitivity, Disturbed neurohumoral modulation. […] Treatment of symptomatic syndrome of inappropriate sinus tachycardia is difficult, and the condition is often inadequately treated. […] The most promising therapy to date is with ivabradine, a blocker of the electrical current in the dominant sinus node pacemaker (If current, or the funny current).

• #3

  https://www.advocatehealth.com/health-services/advocate-heart-institute/conditions/heart-rhythm/tachycardia

  Ventricular tachycardia is usually the result of an underlying heart condition, such as coronary artery disease, cardiomyopathy, mitral valve prolapse or valvular heart disease. […] Factors that can cause tachycardia include: Age, Obesity, Smoking, High blood pressure, Genetics or inherited defects, Excessive caffeine consumption, Use of alcohol and drugs, such as amphetamines and cocaine, Side effect of medications, including over-the-counter medicines and herbal supplements, Diabetes, sleep apnea, thyroid disease, anemia, lung disease or other conditions, Changes or damage to your heart from a heart attack, cardiomyopathy or other heart conditions.

• #3 Tachycardia: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/tachycardia

  Tachycardia is when the heart beats faster than standard over 100 times per minute. […] Other types of tachycardia occur more regularly, with the heart rate spiking for no obvious reason. […] Left untreated, some forms of tachycardia can lead to serious health repercussions, including stroke and heart failure. […] Not all forms of tachycardia are serious. Sinus tachycardia, for example, is the hearts natural, temporary response to stress, exercise, and dehydration. But some causes lead to more serious types of tachycardia. […] The common causes of atrial tachycardia or supraventricular tachycardia are: Stress, Heavy alcohol consumption, Excess caffeine, Irregular blood pressure, high or low, Electrolyte imbalance/dehydration, Anemia/bleeding, Hyperthyroidism (overactive thyroid), Smoking, Stimulant use (methamphetamine and cocaine), Substance withdrawal. […] Some causes of ventricular tachycardia include: Cardiomyopathy (weak heart muscle), Heart disease, Lack of blood in the coronary arteries, Certain medications.

• #3 Evaluation of tachycardia – Differential diagnosis of symptoms | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/830

  Tachycardia, generally defined as a heart rate 100 bpm, can be a normal physiologic response to a systemic process or a manifestation of underlying pathology. […] Sinus tachycardia is a common cause of tachycardia that can often be mistaken for an arrhythmia. […] Sinus tachycardia is the most common cause of sustained tachycardia, as it is usually a normal physiologic response to emotional or physical stimulation. […] Atrial fibrillation is the most common arrhythmia in clinical practice, with an estimated global prevalence of 50 million in 2020. […] The prevalence of inappropriate sinus tachycardia is not well known and the underlying mechanisms are likely to be multifactorial, but patients are often young (age 15 to 50 years) and female. […] The prevalence of ventricular tachyarrhythmia is highly dependent on its type and duration. In patients with a history of previous MI, the incidence of sustained monomorphic ventricular tachyarrhythmia depends on the size of the infarction and the overall left ventricular function.

• #4 Tachycardia: Fast Heart Rate | American Heart Association

  https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/tachycardia–fast-heart-rate

  Other, less common causes may include: Anemia, Infection, Increased thyroid activity, Heart muscle damage from heart attack or heart failure, Severe bleeding, Very low blood pressure, Lung disease. […] Ventricular tachycardia is most often associated with disorders that interfere with the heart’s electrical conduction system. These disorders can include: Lack of coronary artery blood flow, depriving oxygen to heart tissue, Cardiomyopathy distorting the heart’s structure, Medication side effects, Use of illegal drugs such as cocaine or methamphetamine, Sarcoidosis (an inflammatory disease affecting skin or body tissues), Abnormalities of the heart that result in scarring of heart tissue (sometimes called “structural heart disease”); the most common cause is a prior heart attack, Congenital heart conditions, including long QT syndrome, Imbalance of electrolytes needed for conducting electrical impulses.

• #4 Supraventricular tachycardia – Wikipedia

  https://en.wikipedia.org/wiki/Supraventricular_tachycardia

  These abnormal rhythms start from either the atria or atrioventricular node. […] They are generally due to one of two mechanisms: re-entry or increased automaticity. […] A normal resting heart rate is 60 to 100 beats per minute. A resting heart rate of more than 100 beats per minute is defined as a tachycardia. […] Radiofrequency ablation has revolutionized the treatment of tachycardia caused by a re-entrant pathway. […] This therapy has further improved the treatment options for AVNRT (and other SVTs with pathways close to the AV node), widening the application of curative ablation to young patients with relatively mild but still troublesome symptoms who might not have accepted the risk of requiring a pacemaker.

• #4 Tachycardia: Causes, Symptoms, Types and Treatment Options | Max Hospital

  https://www.maxhealthcare.in/blogs/tachycardia-causes-symptoms-and-types

  Tachycardia can be caused by a variety of factors, including: […] Various heart conditions can lead to tachycardia, including atrial fibrillation, atrial flutter, supraventricular tachycardia (SVT), ventricular tachycardia, and ventricular fibrillation. […] Underlying heart diseases, such as coronary artery disease, heart failure, cardiomyopathy, and congenital heart defects, can predispose individuals to tachycardia by affecting the heart’s structure and function. […] Hypertension (high blood pressure) can increase the workload on the heart, leading to tachycardia as the heart tries to compensate for the increased demand. […] Hyperthyroidism, a condition characterized by an overactive thyroid gland, can cause tachycardia due to the excess production of thyroid hormones, which stimulate the heart.

• #4 Tachycardia: Symptoms, treatment, and more

  https://www.medicalnewstoday.com/articles/175241

  Tachycardia usually stems from a disruption in the normal electrical impulses that control the hearts pumping action or the rate at which the heart pumps. […] Depending on the type and cause of tachycardia, the following factors may trigger it: a reaction to certain medications, congenital irregularities of the heart, consuming excessive amounts of alcohol or caffeine, using cocaine or certain other illegal drugs, electrolyte imbalance, poor blood supply and damage to heart tissues due to heart disease, coronary artery disease, heart valve disease, heart failure, heart muscle disease, tumors, infections, hypertension, or high blood pressure, smoking, certain lung conditions, thyroid problems, or anemia, fatigue, severe bleeding, physical and mental stress, including illness and anxiety, previous heart surgery.

• #4 Tachycardia Causes, Signs and Symptoms – Bay Biosciences

  https://baybiosciences.com/tachycardia-causes-signs-and-symptoms/

  Tachycardia is a condition that makes the heart beat more than 100 beats per minute. […] A problem with the electrical signals can result in a faster-than-normal heartbeat. This condition is known as tachycardia. […] Sinus tachycardia is usually caused by anxiety, stress, strenuous exercise, a fever, fear, certain medications, and illegal drugs. It can also be triggered by anemia, an overactive thyroid, or damage from a heart attack or heart failure. […] Supraventricular tachycardia is most likely to affect patients who smoke, drink too much alcohol, or have a lot of caffeine. In some cases it’s linked to heart attacks. […] The ventricular type is associated with abnormal electrical pathways which are present at birth (long QT), structural problems of the heart such as a cardiomyopathy or coronary disease, medications, or electrolyte imbalance.

• #4 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #4

  https://continentalhospitals.com/diseases/atrial-tachycardia/

  Atrial tachycardia can be caused by a variety of factors and underlying conditions. Some common causes include: […] Structural abnormalities present from birth can predispose individuals to atrial tachycardia. […] Diseases of the heart muscle can alter the hearts electrical pathways. […] Reduced blood flow to the heart muscle can lead to abnormal electrical activity. […] Abnormal levels of these electrolytes can disrupt the normal electrical functions of the heart. […] Previous surgeries, especially those involving the atria, can create scar tissue that interferes with normal electrical pathways. […] Inflammation of the pericardium can affect the electrical activity in the atria. […] This can lead to structural changes and increased pressures within the heart, promoting arrhythmias.

• #4 What is Tachycardia? | Symptoms, Causes & Treatment

  https://londonmedical.co.uk/cardiology/tachycardia/

  Tachycardia causes your heart to beat faster than it should. It can also cause irregular heart rhythms or arrhythmias. With tachycardia, your heart can beat more than 100 times per minute. […] There are multiple types of tachycardia and various things can cause it. […] Tachycardia can have many causes some can be underlying and potentially concerning, while others are harmless. The causes of tachycardia can be broadly split into physical and medical. […] Physical causes include: Physical activity during exercise or strenuous activity, your bodys demand for oxygen increases, causing your heart rate to increase; Emotional stress feelings of anxiety and stress can trigger the release of adrenaline and noradrenaline, which cause your heart to beat faster; Fever when your body fights infection and develops a fever, your heart rate increases; Caffeine and other stimulants drinking coffee, energy drinks or certain medications can increase your heart rate.

• #4 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #4 Paroxysmal Supraventricular Tachycardia – Alliance for Aging Research

  https://www.agingresearch.org/paroxysmal-supraventricular-tachycardia/

  Paroxysmal supraventricular tachycardia (PSVT) is an arrhythmia, or irregular heart rhythm, that causes the heart to beat too quicklyoften causing the heart to race and beat as many as 250 beats per minute. […] PSVT is caused by an electrical problem in the heart that you are born with, but it can be brought on by a number of risk factors, including age, female gender, certain medications, alcohol, caffeine, illicit drugs, and smoking.

• #4 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #4 Ventricular Tachycardia: Causes, Symptoms, and Diagnosis

  https://www.healthline.com/health/ventricular-tachycardia

  Ventricular tachycardia may eventually lead to low blood pressure and ventricular fibrillation, a condition in which the heart beats in a rapid, inadequate heart rhythm. […] The exact cause of ventricular tachycardia isn’t always known. In most cases, it’s triggered by another heart condition. […] Known causes of ventricular tachycardia include: Cardiomyopathy. This is a type of heart disease that weakens the heart muscle. […] Structural heart disease. This form of heart disease may be caused by damage from a previous heart attack or infection, or may result from a heart abnormality present at birth. […] Ischemic heart disease. This heart disease is caused by narrow heart arteries limiting blood flow to the heart, often due to buildup of plaque. It can also be called coronary heart disease.

• #4 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #4 Bradycardia & Tachycardia | Montgomery County, PA | AMS Cardiology

  https://amscardiology.com/conditions-procedures/bradycardia-and-tachycardia/

  Bradycardia and Tachycardia are two forms of irregular heart rates or arrhythmias. These arrhythmias occur in the upper or lower chambers of the heart. The normal heart rate is 60-100 beats per minute. […] This is an irregularly fast heart rate (100 beats per minute or more). Depending on where the fast heart rate begins (what chamber of the heart) will determine what type of tachycardia it will be classified as ventricular or supraventricular. […] Both Bradycardia and Tachycardia are caused by an electrical problem within the heart. The Sinus node (the heart’s natural pacemaker), located in the right atrium, sets the beat that the heart will function at. The electrical imbalance is what causes the Sinus node to operate improperly. […] Other causes of Bradycardia and Tachycardia are: Age, Genetics, Pre-existing heart conditions, Infections, Hypothyroidism, Lifestyle choices, Medications, Stress and anxiety, Anemia, Chronic conditions, such as diabetes or high blood pressure. […] It is important to remember that those with Bradycardia (low heart rate) and Tachycardia (high heart rate) have treatment options. Treatment largely depends on the underlying cause and the severity of the condition.

• #4 Understanding Tachycardia-Causes, Dangers, and Management

  https://www.otandp.com/blog/understanding-tachycardia-cause-dangers-management

  Tachycardia can have multiple triggers, ranging from physiological responses to exercise, stress or hyperthermia to medical conditions like heart disease, thyroid and adrenal conditions or electrolyte imbalances. […] Understanding what causes tachycardia is fundamental to addressing the underlying issues, effective treatment and control and preventing recurrence. […] A pulmonary embolism, a blockage in one of the pulmonary arteries in the lungs, can lead to tachycardia as the heart struggles to pump venous blood to the lungs against increased resistance. […] The danger of tachycardia lies in its potential to compromise heart function, effective circulating volume and cause blood clots. […] If left untreated, it can lead to severe complications, including heart failure, thromboembolic events such as stroke or myocardial infarction, or sudden cardiac death.

• #5 Tachycardia: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/tachycardia

  Tachycardia is when the heart beats faster than standard over 100 times per minute. […] Other types of tachycardia occur more regularly, with the heart rate spiking for no obvious reason. […] Left untreated, some forms of tachycardia can lead to serious health repercussions, including stroke and heart failure. […] Not all forms of tachycardia are serious. Sinus tachycardia, for example, is the hearts natural, temporary response to stress, exercise, and dehydration. But some causes lead to more serious types of tachycardia. […] The common causes of atrial tachycardia or supraventricular tachycardia are: Stress, Heavy alcohol consumption, Excess caffeine, Irregular blood pressure, high or low, Electrolyte imbalance/dehydration, Anemia/bleeding, Hyperthyroidism (overactive thyroid), Smoking, Stimulant use (methamphetamine and cocaine), Substance withdrawal. […] Some causes of ventricular tachycardia include: Cardiomyopathy (weak heart muscle), Heart disease, Lack of blood in the coronary arteries, Certain medications.

• #5 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #5 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #5 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #5 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #6 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #6 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #6 Ventricular Tachycardia Causes, Symptoms and Treatments – UChicago Medicine

  https://www.uchicagomedicine.org/conditions-services/heart-vascular/ventricular-tachycardia

  Ventricular tachycardia does not have one definitive cause, but there are several pre-existing heart conditions that can result in scar tissue developing on the heart, which leads to abnormal electrical signals. […] Common sources of VT include: Prior Heart attack, Cardiomyopathy (weak heart muscle), Heart valve disease, Arrhythmogenic RV cardiomyopathy, Inflammatory myocarditis (viral, sarcoidosis), Inherited or congenital heart disease (tetralogy of Fallot). […] Knowing more about your heart health and family history of heart disease is a crucial first step in preventing further damage to your heart and minimizing your risk for VT.

• #6 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #7 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #7 Paroxysmal Supraventricular Tachycardia: Background, Etiology, Epidemiology

  https://emedicine.medscape.com/article/156670-overview

  SVT and paroxysmal SVT are triggered by a reentry mechanism. This may be induced by premature atrial or ventricular ectopic beats. Other triggers include hyperthyroidism and stimulants, including caffeine, drugs, and alcohol. […] Paroxysmal SVT is observed not only in healthy individuals; it is also common in patients with previous myocardial infarction, mitral valve prolapse, rheumatic heart disease, pericarditis, pneumonia, chronic lung disease, and current alcohol intoxication. […] Digoxin toxicity also may be associated with paroxysmal SVT. […] One of the common causes of paroxysmal SVT is AVNRT. AVNRT is diagnosed in 50-60% of patients who present with regular narrow QRS tachyarrhythmia and is often in people older than 20 years. […] Most patients do not have structural heart disease. However, occasionally these individuals may have an underlying heart condition such as rheumatic heart disease, pericarditis, myocardial infarction, mitral valve prolapse, or preexcitation syndrome.

• #7 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

• #8 Sinus Tachycardia | Cardiology | Mercy Health

  https://www.mercy.com/health-care-services/heart-vascular/conditions/sinus-tachycardia

  Sinus tachycardia occurs when your hearts natural pacemaker, the sinoatrial node, sends quicker than standard signals, causing a rapid heart rate increase. […] The cause of sinus tachycardia is unknown but is thought to be caused by a problem with your sinus node, nerve dysfunction that causes your heart rate to decrease, or something triggers your heart rate to increase. […] While the exact cause of inappropriate sinus tachycardia is unknown, it can be caused by several issues. The most common causes include: Problem with your sinus node. A trigger that causes your heart rate to increase. Nerve dysfunction that causes your heart rate to decrease. […] Common triggers of sinus tachycardia include: Heart failure or heart attack. Mitral valve prolapse. Pulmonary embolism. Lung disease. Infection from viruses. Anxiety. Dehydration. Anemia. Hypothyroidism. Low blood pressure. Sepsis. Mercury poisoning. Electric shock. Drug withdrawal. Hypoxia. […] Risk factors for sinus tachycardia include: Anemia. Diabetes. Heart disease. Drinking too much alcohol or caffeine. High blood pressure. Thyroid issues, such as an overactive or underactive thyroid. Sleep apnea. Smoking. Using stimulant medications. Psychological stress.

• #8 Atrial tachycardia – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/atrial-tachycardia/symptoms-causes/syc-20573298

  Atrial tachycardia is caused by faulty electrical signals in the heart. These electrical signals control the heartbeat. […] In atrial tachycardia, a change in these signals makes the heartbeat start too early in the heart’s upper chambers. This causes the heart to beat too fast. Then the heart is not able to fill with blood properly. […] Atrial tachycardia risk factors include: Heart conditions such as coronary artery disease, heart valve disease and other heart diseases. Heart failure. Heart condition present at birth, called a congenital heart defect. Previous heart surgery. Sleep apnea. Thyroid disease. Lung disease, including chronic obstructive pulmonary disease (COPD). Diabetes. Some medicines, including those used to treat asthma, allergies and colds. […] Other things that may increase the risk of atrial tachycardia include: Emotional stress. Too much caffeine. Heavy alcohol use, defined as more than 15 drinks a week for men and eight or more drinks a week for women. Smoking and nicotine use. Stimulant drugs, including cocaine and methamphetamine.

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