Materiały źródłowe

• #1 Sinus bradycardia – UpToDate

  https://www.uptodate.com/contents/sinus-bradycardia

  Sinus bradycardia is a rhythm in which the rate of impulses arising from the sinoatrial (SA) node is lower than expected. […] The normal adult heart rate, arising from the SA node, has been considered historically to range from 60 to 100 beats per minute, with sinus bradycardia being defined as a sinus rhythm with a rate below 60 beats per minute. […] By conventional definition, bradycardia indicates a heart rate less than 60 beats per minute with a normal P wave vector on the surface ECG. As such, sinus bradycardia is typically thought of as sinus rhythm occurring at a rate of less than 60 beats per minute, although one professional society has advocated a rate of less than 50 beats per minute. […] A rate less than 50 beats per minute may be a more pragmatic definition, as most patients with sinus rates in the 50s are asymptomatic. It is important to note that the rate at which a patient is labeled as having bradycardia is somewhat age dependent.

• #2 Bradycardia: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/17841-bradycardia

  Bradycardia is a condition where your heart beats fewer than 60 times per minute, which is unusually slow. This condition may be dangerous if it keeps your heart from pumping enough blood to meet your body’s needs. However, bradycardia can also happen without causing any harmful effects, especially in very physically active people. […] Bradycardia is an arrhythmia (abnormal heart rhythm) because it is slower than the typical rate. The normal heart rate range for adults is between 60 and 100 beats per minute. […] A healthcare provider can diagnose bradycardia based on a combination of a physical exam and tests that measure your heart rate and analyze your heart rhythm. […] The most likely tests for bradycardia include: Physical examination. A physical examination involves a healthcare provider looking at your body for any visible signs of conditions or problems.

• #3 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Diagnosis and Presentation […] Although bradycardia is commonly asymptomatic, patients with underlying conditions or who cannot compensate effectively for reduced heart rate may develop symptoms. Due to decreased blood flow to the brain, heart, and other organs, patients with bradycardia may experience syncope, dyspnea, chest pain, fatigue, heart palpitations, memory issues, confusion, difficulty concentrating, dizziness, or irritability. […] A thorough medical history and physical examination are essential to address the characteristics of a patients symptoms, including the frequency, timing, severity, duration, and triggers or alleviating factors. Clinicians must also determine whether the symptoms are related to medications, meals, emotional distress, physical exertion, positional changes, or other factors. The physical examination should focus on identifying direct manifestations of bradycardia as well as signs of heart disease or other systemic diseases.

• #4 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  To diagnose bradycardia, a healthcare professional examines you and listens to your heart with a stethoscope. You are usually asked questions about your symptoms and medical history. […] Tests may be done to check your heart and look for conditions that can cause bradycardia. […] Electrocardiogram (ECG or EKG). This is the main test used to diagnose bradycardia. An ECG measures the electrical activity of the heart. It shows how the heart is beating. […] If a standard ECG doesn’t show an irregular heartbeat, your healthcare professional may suggest a Holter monitor. […] This device is similar to a Holter monitor, but it records only at certain times for a few minutes at a time. […] This test may be done if you’ve had fainting spells. […] Some irregular heartbeats are triggered or made worse by exercise.

• #5 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Findings suggestive of bradycardia include low blood pressure or a slow/irregular pulse. Patients with underlying heart disease may also have abnormal heart sounds on cardiac examination, and pulmonary examination may reveal sounds consistent with fluid accumulation in the lungs due to heart failure. Depending on the cause of bradycardia, the physical examination may reveal no abnormalities. […] Bradycardia Workup […] A resting electrocardiogram is indicated to confirm the diagnosis of bradycardia in patients with symptoms or physical examination findings consistent with bradycardia. Heart rates fewer than 50 beats per minute in adult patients are diagnostic for bradycardia. Patients with intermittent bradycardia may require Holter monitoring to identify the slower rhythm. […] Once identified, bradycardia typically requires further workup to determine its underlying cause. Additional diagnostic testing includes the following: echocardiogram to evaluate for structural or functional heart problems; electrolyte levels; thyroid hormone levels; cardiac enzymes; toxicology screen; tilt table test; exercise stress test; and electrophysiologic studies.

• #6 Bradycardia Causes, Symptoms, and Treatment

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

  Bradycardia is a type of abnormal heart rhythm that causes a slow heartbeat of less than 60 beats per minute. […] Doctors define bradycardia as a heart rate of less than 60 beats per minute. […] Bradycardia is a common, treatable condition. With proper treatment, most people with bradycardia are able to control symptoms and live a normal, active life. […] During your physical exam, your doctor will: Ask about your symptoms and when they started. Discuss your medical history. Listen to your heart with a stethoscope. Following your exam, your doctor may order additional tests and procedures to confirm a diagnosis of bradycardia. […] We offer a full range of tests for bradycardia, including: Electrocardiogram (ECG) This noninvasive test measures the electrical activity in your heart. Holter monitor This wearable ECG device records your hearts activity throughout the day. Event recorder This portable device is similar to a Holter monitor. However, it only records when you are having symptoms. Echocardiogram This noninvasive test uses sound waves to create images of your heart. Electrophysiology (EP) study This test uses a special catheter that is threaded through your blood vessels and into your heart to map electrical impulses.

• #7 Diagnosing Bradycardia | NYU Langone Health

  https://nyulangone.org/conditions/bradycardia/diagnosis

  NYU Langone heart rhythm specialists diagnose and manage bradycardia, which is an arrhythmia, or heart rhythm disorder. This condition causes a slow heart rate typically fewer than 60 beats per minute. […] To diagnose bradycardia, a specialist at NYU Langones Heart Rhythm Center performs a physical exam. Your doctor measures your heart rate and blood pressure and uses a stethoscope to listen to your heart. […] Our experts may also recommend an electrocardiogram, exercise stress test, echocardiogram, tilt table test, or surveillance monitoring. […] An electrocardiogram, or EKG, records the hearts electrical activity by measuring electrical currents that prompt the heart to beat. This test can help determine whether you have a slow heart rhythm. […] An echocardiogram is an ultrasound examination of the heart. […] If you have experienced episodes of fainting, your doctor may order a tilt table test to observe how your body responds to changes in position. […] Your doctor may ask you to wear a Holter device or ambulatory telemetry device to monitor your hearts activity during your normal daily activities.

• #8 Bradycardia: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/17841-bradycardia

  Electrocardiogram (ECG or EKG). This test is essential for diagnosing bradycardia because it can track your hearts electrical activity very precisely. […] If you have bradycardia but dont have any symptoms, its unlikely that you need treatment. For those who do have symptoms, bradycardia is almost always treatable and is sometimes curable. […] There are two primary ways to treat bradycardia. […] For many people with bradycardia, a permanent pacemaker is the best way to treat this condition. This is especially effective with conditions like sick sinus syndrome, where your hearts natural pacemaker cells arent working properly. […] Complications from bradycardia are more likely to happen when this condition goes too long without treatment. […] Bradycardia is not a condition you should attempt to care for on your own without help from a healthcare provider. If you suspect you have it, you should see your provider (and sooner is better than later). […] For people who do have symptoms or problems because of bradycardia, youre more likely to have a good outcome with early diagnosis and treatment. Delays in treatment, especially when bradycardia happens because of certain conditions, usually increase your risk of complications or death.

• #9 Sinus Bradycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK493201/

  Sinus bradycardia is a cardiac rhythm with appropriate cardiac muscular depolarization initiating from the sinus node and a rate of fewer than 60 beats per minute (bpm). The diagnosis of this condition requires an ECG showing a normal sinus rhythm at a rate lower than 60 bpm. […] The diagnosis of sinus bradycardia requires visualization of an electrocardiogram showing a normal sinus rhythm at a rate lower than 60 bpm. […] A 12-lead ECG is necessary to make the diagnosis.

• #10 Bradycardia – Symptoms, diagnosis and treatment | BMJ Best Practice

  https://bestpractice.bmj.com/topics/en-gb/832

  Sinus bradycardia is any heart rhythm slower than 50 bpm, even if transient, owing to sinus node dysfunction and/or atrioventricular (AV) conduction abnormalities. […] Evaluation involves determining the association of symptoms with heart rate and an assessment of underlying cardiovascular conditions. A 12-lead ECG and/or a heart monitor are the diagnostic tests of choice. […] Diagnostic tests include 12-lead ECG, Holter monitoring, event monitor/mobile cardiac telemetry, exercise testing, carotid sinus massage, echocardiogram, thyroid function tests, basic metabolic panel, arterial blood gas, cardiac biomarkers, serum digoxin level, and serum creatinine. […] Tests to consider include implantable-loop recorder, tilt-table testing, Lyme titres, electrophysiology testing, and nocturnal pulse oximetry or overnight polysomnography.

• #11 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  To diagnose bradycardia, a healthcare professional examines you and listens to your heart with a stethoscope. You are usually asked questions about your symptoms and medical history. […] Tests may be done to check your heart and look for conditions that can cause bradycardia. […] Electrocardiogram (ECG or EKG). This is the main test used to diagnose bradycardia. An ECG measures the electrical activity of the heart. It shows how the heart is beating. […] If a standard ECG doesn’t show an irregular heartbeat, your healthcare professional may suggest a Holter monitor. […] This device is similar to a Holter monitor, but it records only at certain times for a few minutes at a time. […] This test may be done if you’ve had fainting spells. […] Some irregular heartbeats are triggered or made worse by exercise.

• #12 Bradycardia: Diagnosis & Treatment | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/bradycardia/treatment

  How is Bradycardia Diagnosed? Diagnosis Bradycardia symptoms should be taken seriously. Your doctor will perform a history and physical exam to check your pulse, measuring heartbeats (monitoring for slow heartbeats) and a potential abnormal heart rhythm. They will also ask questions about your medical history and symptoms. […] If necessary, certain steps will be taken to confirm an irregular heartbeat, investigate the cause of the cardiac arrhythmias, and monitor your heart rate. […] Tests to diagnose bradycardia can include: […] ECG or EKG (electrocardiogram) – A simple test where electrodes are placed on the chest (and occasionally on the arms and legs) to record the hearts electrical system and rhythms […] Heart monitor – To get more information about the bradycardia heart rate, you may be asked to wear an at-home heart monitor for a few days, to record how often and how far it dips under 60 beats per minute. A heart monitor box (Holter monitor) can be worn around the waist, over the shoulder, or clipped to a pocket or belt.

• #13 Diagnosis and Treatment of Sick Sinus Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/0415/p1725.html

  Sick sinus syndrome comprises a variety of conditions involving sinus node dysfunction and commonly affects elderly persons. […] Diagnosis of sick sinus syndrome can be difficult because of its nonspecific symptoms and elusive findings on electrocardiogram or Holter monitor. […] The diagnosis of sick sinus syndrome may be difficult because of the slow and erratic course of the syndrome. […] The diagnosis requires not only documentation of sinus node dysfunction but also correlation with the associated symptoms of sick sinus syndrome. […] The most common method of diagnosis is Holter monitoring. […] If two 24-hour periods of Holter monitoring fail to reveal the dysrhythmias of sick sinus syndrome, but the symptoms are severe and intermittent, it is likely that the sinus node dysfunction is severe but intermittent.

• #14 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  EKG readings are the most important test your doctor will use to diagnose you with bradycardia. […] Your doctor will likely diagnose you based on a physical exam and tests, such as: […] EKG. This test measures your hearts electrical activity using sensors (electrodes) that stick to the skin of your chest. These electrodes sense the electrical activity of your heart. It is the most important test your doctor will use to diagnose if you have bradycardia. […] Holter monitor. This is a wearable version of an EKG, which records your heart’s activity continuously over about 24 hours so your doctor can see your heart’s rhythm over a longer time. […] Event recorder. This is like a Holter monitor, but it records only at specific times for a few minutes. You may need to push a button whenever you notice symptoms, or the recorder may be set to automatically record whenever it detects a low heart rate.

• #15 Bradycardia: Diagnosis & Treatment | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/bradycardia/treatment

  Event recorder – An event recorder monitors your heart for extended periods, sometimes up to 30 days. Unlike the Holter heart monitor, it doesnt record continuously. The device may automatically start recording when signs of bradycardia are detected, or you may have to push a button when the symptoms begin. Many monitors come in patch form. […] Stress test (exercise stress test) – To observe your heart rate, blood pressure, and breathing during physical exercise, you will walk/run on a treadmill or ride a stationary bike while an EKG captures the hearts electrical activity.

• #16 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  EKG readings are the most important test your doctor will use to diagnose you with bradycardia. […] Your doctor will likely diagnose you based on a physical exam and tests, such as: […] EKG. This test measures your hearts electrical activity using sensors (electrodes) that stick to the skin of your chest. These electrodes sense the electrical activity of your heart. It is the most important test your doctor will use to diagnose if you have bradycardia. […] Holter monitor. This is a wearable version of an EKG, which records your heart’s activity continuously over about 24 hours so your doctor can see your heart’s rhythm over a longer time. […] Event recorder. This is like a Holter monitor, but it records only at specific times for a few minutes. You may need to push a button whenever you notice symptoms, or the recorder may be set to automatically record whenever it detects a low heart rate.

• #17 Bradycardia | Diagnosis | UK Healthcare

  https://ukhealthcare.uky.edu/gill-heart-vascular-institute/conditions/arrhythmias/bradycardia/diagnosis

  During your initial office visit, your healthcare provider will spend time with you and learn more about your symptoms and overall health. They will: […] An ECG or EKG records the electrical activity in your heart through electrodes attached to the body and connected to a machine with wires. […] This device, usually worn for 30 days, allows patients to push a button and record symptoms when they appear. Some event recorders work automatically when irregular heartbeats occur. […] For this test, you will walk on a treadmill or ride a stationary bicycle while connected to heart monitoring equipment. The test shows how well your heart functions during physical activity, including whether blood flow to the heart is reduced with exertion. […] A patch monitor is a battery-operated ECG that sticks to your chest. While wearing the patch monitor, you can do nearly all your usual activities, even showering. The test usually lasts for one to two weeks.

• #18 Bradycardia Symptoms, Causes & Treatment | Baptist Health

  https://www.baptisthealth.com/care-services/conditions-treatments/bradycardia

  Longer-term monitoring diagnostic methods include: […] Event monitor: This portable EKG device records the heart rate when a button is pressed. It can be worn for weeks or until symptoms occur. […] Holter monitor: This portable EKG device continuously records the hearts rhythms and is worn for 24 to 48 hours during normal activity. […] LINQ insertable cardiac monitor: This wireless, powerful, small insertable cardiac monitor is ideal for patients experiencing infrequent symptoms that require long-term monitoring or ongoing management.

• #19 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  To diagnose bradycardia, a healthcare professional examines you and listens to your heart with a stethoscope. You are usually asked questions about your symptoms and medical history. […] Tests may be done to check your heart and look for conditions that can cause bradycardia. […] Electrocardiogram (ECG or EKG). This is the main test used to diagnose bradycardia. An ECG measures the electrical activity of the heart. It shows how the heart is beating. […] If a standard ECG doesn’t show an irregular heartbeat, your healthcare professional may suggest a Holter monitor. […] This device is similar to a Holter monitor, but it records only at certain times for a few minutes at a time. […] This test may be done if you’ve had fainting spells. […] Some irregular heartbeats are triggered or made worse by exercise.

• #20 Bradycardia: Diagnosis & Treatment | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/bradycardia/treatment

  Event recorder – An event recorder monitors your heart for extended periods, sometimes up to 30 days. Unlike the Holter heart monitor, it doesnt record continuously. The device may automatically start recording when signs of bradycardia are detected, or you may have to push a button when the symptoms begin. Many monitors come in patch form. […] Stress test (exercise stress test) – To observe your heart rate, blood pressure, and breathing during physical exercise, you will walk/run on a treadmill or ride a stationary bike while an EKG captures the hearts electrical activity.

• #21 Sinus Bradycardia: Causes, Symptoms, and Treatment

  https://www.verywellhealth.com/sinus-bradycardia-1746253

  Bradycardia is a heart rate that’s slower than normal. […] This article explains bradycardia symptoms and their causes. It discusses how bradycardia is diagnosed and how both types of heart rate problems are treated. […] An electrocardiogram (ECG) will show that a slow heart rate is present. ECG tests will help to determine whether a slow heart rate is due to sinus bradycardia or heart block. […] The healthcare provider will then determine whether the bradycardia is likely to be persistent or due to a transient (temporary) cause, such as an infection. This can often be determined by taking a careful medical history. […] If other tests are needed, they may include: Stress test: In some people (mainly older people), sinus node disease or heart block may produce symptoms only during exertion. A stress test can help to diagnose these cases by identifying whether the heart rate increases as it should in response to an exercise challenge.

• #22 Bradycardia | Diagnosis | UK Healthcare

  https://ukhealthcare.uky.edu/gill-heart-vascular-institute/conditions/arrhythmias/bradycardia/diagnosis

  During your initial office visit, your healthcare provider will spend time with you and learn more about your symptoms and overall health. They will: […] An ECG or EKG records the electrical activity in your heart through electrodes attached to the body and connected to a machine with wires. […] This device, usually worn for 30 days, allows patients to push a button and record symptoms when they appear. Some event recorders work automatically when irregular heartbeats occur. […] For this test, you will walk on a treadmill or ride a stationary bicycle while connected to heart monitoring equipment. The test shows how well your heart functions during physical activity, including whether blood flow to the heart is reduced with exertion. […] A patch monitor is a battery-operated ECG that sticks to your chest. While wearing the patch monitor, you can do nearly all your usual activities, even showering. The test usually lasts for one to two weeks.

• #23 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  To diagnose bradycardia, a healthcare professional examines you and listens to your heart with a stethoscope. You are usually asked questions about your symptoms and medical history. […] Tests may be done to check your heart and look for conditions that can cause bradycardia. […] Electrocardiogram (ECG or EKG). This is the main test used to diagnose bradycardia. An ECG measures the electrical activity of the heart. It shows how the heart is beating. […] If a standard ECG doesn’t show an irregular heartbeat, your healthcare professional may suggest a Holter monitor. […] This device is similar to a Holter monitor, but it records only at certain times for a few minutes at a time. […] This test may be done if you’ve had fainting spells. […] Some irregular heartbeats are triggered or made worse by exercise.

• #24 Diagnosing Bradycardia | NYU Langone Health

  https://nyulangone.org/conditions/bradycardia/diagnosis

  NYU Langone heart rhythm specialists diagnose and manage bradycardia, which is an arrhythmia, or heart rhythm disorder. This condition causes a slow heart rate typically fewer than 60 beats per minute. […] To diagnose bradycardia, a specialist at NYU Langones Heart Rhythm Center performs a physical exam. Your doctor measures your heart rate and blood pressure and uses a stethoscope to listen to your heart. […] Our experts may also recommend an electrocardiogram, exercise stress test, echocardiogram, tilt table test, or surveillance monitoring. […] An electrocardiogram, or EKG, records the hearts electrical activity by measuring electrical currents that prompt the heart to beat. This test can help determine whether you have a slow heart rhythm. […] An echocardiogram is an ultrasound examination of the heart. […] If you have experienced episodes of fainting, your doctor may order a tilt table test to observe how your body responds to changes in position. […] Your doctor may ask you to wear a Holter device or ambulatory telemetry device to monitor your hearts activity during your normal daily activities.

• #25 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  Tilt table test. Your doctor may order this test if your bradycardia is causing fainting spells. It changes your position from lying down to standing and lets your doctor see if this change triggers a fainting spell. […] Stress exercise test. Your doctor may order this test to see how your heart does while you ride an exercise bike or walk on a treadmill. […] Sleep study. Your doctor may order this test to see if you have obstructive sleep apnea that is causing your slow heart rate. […] Blood tests that detect things such as: […] Electrolyte levels, especially calcium, potassium, and magnesium […] Thyroid hormone levels (Low thyroid hormone levels can cause bradycardia.) […] Troponin, which is a protein made by your heart when it has been damaged […] Drugs that cause heart damage or bradycardia, in a test called a toxicology screen.

• #26 Bradycardia | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/b/bradycardia.html

  Depending on the patient’s symptoms and the results of the other diagnostic tests, an echocardiom may be prescribed. This noninvasive procedure uses a machine called a transducer that bounces sound waves off the heart and back into the transducer. These echoes are then translated into visual images. […] Other diagnostics may include the tilt table test and exercise test to look at the relationship between the patients heart rate and physical position (sitting or standing), as well as how exercise affects the heart rate. Electrophysiology studies may also be used to look at the heart’s electrical system.

• #27 Diagnosing Bradycardia | NYU Langone Health

  https://nyulangone.org/conditions/bradycardia/diagnosis

  NYU Langone heart rhythm specialists diagnose and manage bradycardia, which is an arrhythmia, or heart rhythm disorder. This condition causes a slow heart rate typically fewer than 60 beats per minute. […] To diagnose bradycardia, a specialist at NYU Langones Heart Rhythm Center performs a physical exam. Your doctor measures your heart rate and blood pressure and uses a stethoscope to listen to your heart. […] Our experts may also recommend an electrocardiogram, exercise stress test, echocardiogram, tilt table test, or surveillance monitoring. […] An electrocardiogram, or EKG, records the hearts electrical activity by measuring electrical currents that prompt the heart to beat. This test can help determine whether you have a slow heart rhythm. […] An echocardiogram is an ultrasound examination of the heart. […] If you have experienced episodes of fainting, your doctor may order a tilt table test to observe how your body responds to changes in position. […] Your doctor may ask you to wear a Holter device or ambulatory telemetry device to monitor your hearts activity during your normal daily activities.

• #28 Bradycardia Causes, Symptoms, and Treatment

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

  Bradycardia is a type of abnormal heart rhythm that causes a slow heartbeat of less than 60 beats per minute. […] Doctors define bradycardia as a heart rate of less than 60 beats per minute. […] Bradycardia is a common, treatable condition. With proper treatment, most people with bradycardia are able to control symptoms and live a normal, active life. […] During your physical exam, your doctor will: Ask about your symptoms and when they started. Discuss your medical history. Listen to your heart with a stethoscope. Following your exam, your doctor may order additional tests and procedures to confirm a diagnosis of bradycardia. […] We offer a full range of tests for bradycardia, including: Electrocardiogram (ECG) This noninvasive test measures the electrical activity in your heart. Holter monitor This wearable ECG device records your hearts activity throughout the day. Event recorder This portable device is similar to a Holter monitor. However, it only records when you are having symptoms. Echocardiogram This noninvasive test uses sound waves to create images of your heart. Electrophysiology (EP) study This test uses a special catheter that is threaded through your blood vessels and into your heart to map electrical impulses.

• #29 Bradycardia | Cedars-Sinai

  https://www.cedars-sinai.org/health-library/diseases-and-conditions/b/bradycardia.html

  Depending on the patient’s symptoms and the results of the other diagnostic tests, an echocardiom may be prescribed. This noninvasive procedure uses a machine called a transducer that bounces sound waves off the heart and back into the transducer. These echoes are then translated into visual images. […] Other diagnostics may include the tilt table test and exercise test to look at the relationship between the patients heart rate and physical position (sitting or standing), as well as how exercise affects the heart rate. Electrophysiology studies may also be used to look at the heart’s electrical system.

• #30 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Findings suggestive of bradycardia include low blood pressure or a slow/irregular pulse. Patients with underlying heart disease may also have abnormal heart sounds on cardiac examination, and pulmonary examination may reveal sounds consistent with fluid accumulation in the lungs due to heart failure. Depending on the cause of bradycardia, the physical examination may reveal no abnormalities. […] Bradycardia Workup […] A resting electrocardiogram is indicated to confirm the diagnosis of bradycardia in patients with symptoms or physical examination findings consistent with bradycardia. Heart rates fewer than 50 beats per minute in adult patients are diagnostic for bradycardia. Patients with intermittent bradycardia may require Holter monitoring to identify the slower rhythm. […] Once identified, bradycardia typically requires further workup to determine its underlying cause. Additional diagnostic testing includes the following: echocardiogram to evaluate for structural or functional heart problems; electrolyte levels; thyroid hormone levels; cardiac enzymes; toxicology screen; tilt table test; exercise stress test; and electrophysiologic studies.

• #31 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Findings suggestive of bradycardia include low blood pressure or a slow/irregular pulse. Patients with underlying heart disease may also have abnormal heart sounds on cardiac examination, and pulmonary examination may reveal sounds consistent with fluid accumulation in the lungs due to heart failure. Depending on the cause of bradycardia, the physical examination may reveal no abnormalities. […] Bradycardia Workup […] A resting electrocardiogram is indicated to confirm the diagnosis of bradycardia in patients with symptoms or physical examination findings consistent with bradycardia. Heart rates fewer than 50 beats per minute in adult patients are diagnostic for bradycardia. Patients with intermittent bradycardia may require Holter monitoring to identify the slower rhythm. […] Once identified, bradycardia typically requires further workup to determine its underlying cause. Additional diagnostic testing includes the following: echocardiogram to evaluate for structural or functional heart problems; electrolyte levels; thyroid hormone levels; cardiac enzymes; toxicology screen; tilt table test; exercise stress test; and electrophysiologic studies.

• #32 Sinus Bradycardia Workup: Laboratory Studies, Imaging Studies

  https://emedicine.medscape.com/article/760220-workup

  Laboratory studies may be helpful if the cause of the bradycardia is thought to be related to electrolytes, drug, or toxins. In cases of sick sinus syndrome, routine laboratory studies are rarely of specific value. […] Reasonable screening studies, especially if the patient is symptomatic and this is the initial presentation, include the following: Electrolyte levels, Glucose level, Calcium level, Magnesium level, Thyroid function tests, Toxicologic screen, Troponin. […] A 12-lead ECG may be performed to confirm the diagnosis.

• #33 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  Tilt table test. Your doctor may order this test if your bradycardia is causing fainting spells. It changes your position from lying down to standing and lets your doctor see if this change triggers a fainting spell. […] Stress exercise test. Your doctor may order this test to see how your heart does while you ride an exercise bike or walk on a treadmill. […] Sleep study. Your doctor may order this test to see if you have obstructive sleep apnea that is causing your slow heart rate. […] Blood tests that detect things such as: […] Electrolyte levels, especially calcium, potassium, and magnesium […] Thyroid hormone levels (Low thyroid hormone levels can cause bradycardia.) […] Troponin, which is a protein made by your heart when it has been damaged […] Drugs that cause heart damage or bradycardia, in a test called a toxicology screen.

• #34 Bradycardia

  https://www.hcahealthcare.co.uk/conditions/bradycardia

  What is bradycardia? This common arrhythmia of the heart is diagnosed when you have an abnormally slow resting heart rate of below 60 beats per minute (BPM). […] If you’re concerned about bradycardia or any of the symptoms we’ve listed, contact your doctor as soon as possible or make an appointment with one of our heart rhythm specialists for diagnostic tests. […] At HCA UK, you’ll have access to the UK’s most comprehensive private diagnostics network. That means the very latest tests, scans and imaging technology, with results delivered in as little as 48 hours. […] The full range of diagnostic tests we offer includes: Electrocardiogram (ECG), Ambulatory ECG, Echocardiogram, Tilt-table test, Blood tests, Blood pressure tests. […] Your consultant may recommend that you have blood tests to check for factors including: Electrolyte levels such as calcium, potassium and magnesium, Thyroid hormone levels, Troponin, a protein found in your heart muscle cells which can leak into your blood because of heart damage, Toxic substances such as prescription or recreational drugs.

• #35 Bradycardia Causes, Symptoms, and Treatment

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

  Bradycardia is a type of abnormal heart rhythm that causes a slow heartbeat of less than 60 beats per minute. […] Doctors define bradycardia as a heart rate of less than 60 beats per minute. […] Bradycardia is a common, treatable condition. With proper treatment, most people with bradycardia are able to control symptoms and live a normal, active life. […] During your physical exam, your doctor will: Ask about your symptoms and when they started. Discuss your medical history. Listen to your heart with a stethoscope. Following your exam, your doctor may order additional tests and procedures to confirm a diagnosis of bradycardia. […] We offer a full range of tests for bradycardia, including: Electrocardiogram (ECG) This noninvasive test measures the electrical activity in your heart. Holter monitor This wearable ECG device records your hearts activity throughout the day. Event recorder This portable device is similar to a Holter monitor. However, it only records when you are having symptoms. Echocardiogram This noninvasive test uses sound waves to create images of your heart. Electrophysiology (EP) study This test uses a special catheter that is threaded through your blood vessels and into your heart to map electrical impulses.

• #36 Bradycardia Explained: Causes, Symptoms, and Treatments

  https://bayareacardiology.com/conditions/heart-rhythm-disorders/bradycardia

  Bradycardia refers to a heart rate that is slower than normal, generally defined as under 60 beats per minute in adults. […] Diagnosing bradycardia involves a comprehensive assessment by healthcare professionals to determine the underlying cause and severity of the condition. This typically includes a range of tests and diagnostic procedures. […] The following tests may be used to test and diagnose bradycardia: […] An EKG is a test that records the electrical activity of the heart. It can help to identify bradycardia and any underlying heart rhythm abnormalities. […] A Holter monitor is a portable device that records the heart’s electrical activity for 24 to 48 hours. It can be used to capture episodes of bradycardia that may not be present during a standard EKG. […] An event monitor is similar to a Holter monitor, but it can be activated by the patient when they experience symptoms of bradycardia. This allows for the recording of specific events associated with bradycardia.

• #37 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Infantile-Bradycardia-Causes-Diagnosis-Symptoms-and-Treatment.aspx

  Bradycardia is defined heart rate less than the lower limit of normal for age or slow heart rate. A normal heart rate in children varies based on age as well as the level of physical activity. In the age group of 0 3 years, heart rate less than 100 beats per minute (bpm) is considered as bradycardia. […] The first step in the evaluation of infantile bradycardia is performing an electrocardiogram. The electrocardiogram helps the doctor identify the exact cause of bradycardia, and the severity of the condition. Patients with abnormal heart beats but a normal electrocardiogram might need Holter monitoring. Holter monitor is a device used to keep track of heart rhythm over the course of a full day. It can detect bradycardia and the specific conduction abnormality. […] Thyroid function tests should be done to check out for hypothyroidism – a common cause of bradycardia. Assessment of arterial blood gasses can help to detect acidosis and hypoxemia. […] Cardiac electrophysiology studies may be required in some cases to detect the abnormal heartbeat or an area of abnormal heart tissue.

• #38 Bradycardia Explained: Causes, Symptoms, and Treatments

  https://bayareacardiology.com/conditions/heart-rhythm-disorders/bradycardia

  An EPS is a procedure in which thin wires are inserted into the heart to assess its electrical activity. It can help to pinpoint the exact location of heart rhythm abnormalities and guide treatment decisions. […] A tilt table test is a test that measures how the heart responds to changes in body position. It can be used to diagnose bradycardia-related syncope (fainting). […] An echocardiogram is a test that uses ultrasound to image the heart. It can be used to assess the structure and function of the heart and identify any structural abnormalities that may be contributing to bradycardia. […] Blood tests can be used to assess various factors that can affect heart rate, such as thyroid function and electrolyte levels.

• #39 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  A sleep study may be suggested if you have repeated pauses in breathing during sleep, called obstructive sleep apnea. […] If you have severe bradycardia symptoms and other treatments aren’t possible, your health professional may suggest a device called a pacemaker. […] A pacemaker is placed under the skin near the collarbone during a minor surgery. The device helps fix a slow heartbeat.

• #40 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  Tilt table test. Your doctor may order this test if your bradycardia is causing fainting spells. It changes your position from lying down to standing and lets your doctor see if this change triggers a fainting spell. […] Stress exercise test. Your doctor may order this test to see how your heart does while you ride an exercise bike or walk on a treadmill. […] Sleep study. Your doctor may order this test to see if you have obstructive sleep apnea that is causing your slow heart rate. […] Blood tests that detect things such as: […] Electrolyte levels, especially calcium, potassium, and magnesium […] Thyroid hormone levels (Low thyroid hormone levels can cause bradycardia.) […] Troponin, which is a protein made by your heart when it has been damaged […] Drugs that cause heart damage or bradycardia, in a test called a toxicology screen.

• #41 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Undiagnosed sleep apnea is often an underlying reversible cause of nocturnal bradycardia. Patients should be screened for sleep apnea and receive treatment for confirmed sleep apnea before receiving treatment for nocturnal bradycardia. […] For patients who exhibit bradycardia without reversible causes, permanent pacing is the primary treatment approach. In cases where the etiology of symptoms related to bradycardia remains ambiguous and no reversible causes have been identified, oral theophylline is recommended before considering permanent cardiac pacing. Based on response to theophylline, patients may be considered for permanent pacing. Placing a single- or dual-chamber pacemaker depends on the initial response to pacing and whether a patient has normal AV conduction or an indication to avoid a right ventricular lead.

• #42 Bradycardia – Symptoms, diagnosis and treatment | BMJ Best Practice

  https://bestpractice.bmj.com/topics/en-gb/832

  Sinus bradycardia is any heart rhythm slower than 50 bpm, even if transient, owing to sinus node dysfunction and/or atrioventricular (AV) conduction abnormalities. […] Evaluation involves determining the association of symptoms with heart rate and an assessment of underlying cardiovascular conditions. A 12-lead ECG and/or a heart monitor are the diagnostic tests of choice. […] Diagnostic tests include 12-lead ECG, Holter monitoring, event monitor/mobile cardiac telemetry, exercise testing, carotid sinus massage, echocardiogram, thyroid function tests, basic metabolic panel, arterial blood gas, cardiac biomarkers, serum digoxin level, and serum creatinine. […] Tests to consider include implantable-loop recorder, tilt-table testing, Lyme titres, electrophysiology testing, and nocturnal pulse oximetry or overnight polysomnography.

• #43 Bradycardia – Diagnosis – Cardio Guide

  https://www.cardioguide.ca/bradycardia/

  Bradyarrhythmia is defined as a HR60bpm. […] The level of disturbance in the cardiac conduction system responsible for the bradyarrhythmia is an important marker of prognosis and dictates the management strategy. […] Understanding indications for pacemaker implantation is key. […] Clinical presentation varies in severity depending on the degree of cardiac output. […] Common symptoms: Cardiac syncope most important symptom. […] Mild bradycardia symptoms can be present, but are non-specific. Patients can report fatigue, exercise intolerance, dyspnea, anginal pain, pre-syncope. […] Etiologies are divided into intrinsic (pathophysiological processes inherent to the conduction system) or extrinsic (external processes influences the function of an intact conduction system). […] Another way to separate the differential diagnosis is by the following categories: Irreversible Acquired Pathologic, Reversible.

• #44 Bradycardia DDx • LITFL • CCC Differential Diagnosis

  https://litfl.com/bradycardia-ddx/

  Bradycardia refers to heart rate 60/min in an adult. […] Bradycardias are classified as regular or irregular, narrow complex or wide complex. […] The underlying causes of bradycardia are legion. […] Differential diagnosis of the underlying causes of bradycardia includes cardiac disease, hypoxia, electrolyte disturbance, medications, poisonings and toxic exposures, hypothermia, hypothyroidism, raised intracranial pressure, infections, autoimmune disorders, infiltrative disorders, and physiological causes.

• #45 Sinus Bradycardia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK493201/

  Sinus bradycardia is a cardiac rhythm with appropriate cardiac muscular depolarization initiating from the sinus node and a rate of fewer than 60 beats per minute (bpm). The diagnosis of this condition requires an ECG showing a normal sinus rhythm at a rate lower than 60 bpm. […] The diagnosis of sinus bradycardia requires visualization of an electrocardiogram showing a normal sinus rhythm at a rate lower than 60 bpm. […] A 12-lead ECG is necessary to make the diagnosis.

• #46 Bradycardia | UCI Health | Orange County, CA

  https://www.ucihealth.org/medical-services/treatments/~/~/link.aspx?_id=04c12619938c4163babfa9358bb3759d&_z=z

  When youre worried about your low resting heart rate (bradycardia), well work with you to determine the best way to manage it. […] Bradycardia diagnosis at UCI Health […] If youre having symptoms of bradycardia, our cardiologists can help get to the root of the problem. We offer comprehensive diagnostic tests that can determine if you have bradycardia or another condition. Your UCI Health clinician will often start by recommending that you get an electrocardiogram (EKG, ECG). This noninvasive test records your hearts electrical activity and identifies any irregularities. […] Our cardiology team specializes in advanced diagnostic testing and imaging to determine if you have bradycardia or other heart conditions.

• #47 Differential Diagnosis: Bradycardia

  https://www.ebmconsult.com/articles/differential-diagnosis-bradycardia

  Bradycardia: Differential Diagnosis […] A pulse of 60 bpm is considered bradycardia in adults, whereas in newborns a pulse 60 bpm with evidence of low perfusion considered a reflection of a life threatening situation where chest compressions are recommended to be started. […] Pathophysiology: Reduces chronotropy via inhibition of SA Node and AV nodal. […] Pathophysiology: Slowing of AV nodal conduction in the heart. […] Pathophysiology: Increase vagal or parasympathetic mediated tone on the AV node, thereby reducing the pulse. […] Pathophysiology: Cushing’s triad or reflex (hypertension + bradycardia + widening pulse pressure [increased systolic BP compared to the diastolic pressure) that occurs with rising intracranial pressure (ICP) with resulting impending risk of brain stem herniation.

• #48 Differential Diagnosis: Bradycardia

  https://www.ebmconsult.com/articles/differential-diagnosis-bradycardia

  Pathophysiology: Known to cause significant heart block. […] Pathophysiology: Decrease blood flow (especially involving the right coronary artery) to heart muscle containing nodal cells that function as a pacemaker. […] Pathophysiology: Abnormalities in sinoatrial node impulse formation and propagation within the atrium. […] Pathophysiology: Sotalol is a class III antiarrhythmic medication known to inhibit potassium conduction during phase 3 of the action potential in a ventricular myocyte. […] Pathophysiology: Reduction in sympathetic tone resulting a decreased pulse and blood pressure that temporarily results in a reduction in cardiac output and blood flow to the brain which results in a short period of syncope (usually 30-60 sec).

• #49 Bradycardia DDx • LITFL • CCC Differential Diagnosis

  https://litfl.com/bradycardia-ddx/

  Bradycardia refers to heart rate 60/min in an adult. […] Bradycardias are classified as regular or irregular, narrow complex or wide complex. […] The underlying causes of bradycardia are legion. […] Differential diagnosis of the underlying causes of bradycardia includes cardiac disease, hypoxia, electrolyte disturbance, medications, poisonings and toxic exposures, hypothermia, hypothyroidism, raised intracranial pressure, infections, autoimmune disorders, infiltrative disorders, and physiological causes.

• #50 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  „Normal adult heart rates range from 60-100 beats per minute (BPM), with bradycardia defined as a heart rate of less than 60 BPM. […] Bradycardia can be physiologic, such as in individuals who have high levels of cardiovascular training. However, pathologic and/or symptomatic bradycardia results from a disruption in this electrical circuit. […] Defined as the presence of bradycardia, resulting in debilitating symptoms with lack of alternate explanation. […] The most common symptoms include: Lightheadedness, Syncope, Chest pain, Exercise intolerance, Fatigue. […] Important note: The heart rate at which patients experience symptoms may vary based on their ability to increase stroke volume. […] What are common causes of symptomatic bradycardia? Myocardial Infarction, Medication, Sinus node dysfunction, Infectious Disease, Hypothermia, Metabolic Abnormalities (hypothyroidism, hyperkalemia, etc.), Elevated intracranial pressure (ICP), Genetic Conditions.

• #51 Symptomatic Bradycardia Causes and Treatment – ACLS.com

  https://acls.com/articles/symptomatic-bradycardia-adequate-versus-poor-perfusion/

  What is bradycardia? The National Institutes of Health defines bradycardia as a heart rate 60 bpm in adults other than well-trained athletes. The determination on whether or not treatment is necessary for bradycardic events is generally based on the presence of bradycardia symptoms. The clinical manifestations of bradycardia can vary widely from insidious symptoms to episodes of frank syncope. […] The electrocardiographic findings in patients with SND are varied and the diagnosis may be considered in patients with sinus bradycardia or atrial depolarization from a subsidiary pacemaker other than the sinus node (i.e. ectopic atrial rhythm, junctional rhythm, or ventricular escape), intermittent sinus pauses, or a blunted heart rate response with exercise (chronotropic incompetence). […] When a patient is evaluated for symptomatic bradycardia, an in-depth history and physical is important, along with the identification of possible reversible causes.

• #52 Diagnosis and Treatment of Sick Sinus Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/0415/p1725.html

  Sick sinus syndrome comprises a variety of conditions involving sinus node dysfunction and commonly affects elderly persons. […] Diagnosis of sick sinus syndrome can be difficult because of its nonspecific symptoms and elusive findings on electrocardiogram or Holter monitor. […] The diagnosis of sick sinus syndrome may be difficult because of the slow and erratic course of the syndrome. […] The diagnosis requires not only documentation of sinus node dysfunction but also correlation with the associated symptoms of sick sinus syndrome. […] The most common method of diagnosis is Holter monitoring. […] If two 24-hour periods of Holter monitoring fail to reveal the dysrhythmias of sick sinus syndrome, but the symptoms are severe and intermittent, it is likely that the sinus node dysfunction is severe but intermittent.

• #53 Diagnosis and Treatment of Sick Sinus Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/0415/p1725.html

  Sick sinus syndrome comprises a variety of conditions involving sinus node dysfunction and commonly affects elderly persons. […] Diagnosis of sick sinus syndrome can be difficult because of its nonspecific symptoms and elusive findings on electrocardiogram or Holter monitor. […] The diagnosis of sick sinus syndrome may be difficult because of the slow and erratic course of the syndrome. […] The diagnosis requires not only documentation of sinus node dysfunction but also correlation with the associated symptoms of sick sinus syndrome. […] The most common method of diagnosis is Holter monitoring. […] If two 24-hour periods of Holter monitoring fail to reveal the dysrhythmias of sick sinus syndrome, but the symptoms are severe and intermittent, it is likely that the sinus node dysfunction is severe but intermittent.

• #54 Diagnosis and Treatment of Sick Sinus Syndrome | AAFP

  https://www.aafp.org/pubs/afp/issues/2003/0415/p1725.html

  Another approach is to have patients activate a recording device to monitor the events of cardiac dysrhythmias when they are having symptoms. […] The diagnosis requires not only documentation of sinus node dysfunction but also correlation with the associated symptoms of sick sinus syndrome. […] Sinus node dysfunction can occur perioperatively because of increased vagal tone caused by anesthesia or surgical intervention. […] All of these possibilities must be excluded before the diagnosis of sick sinus syndrome can be made.

• #55 Evaluating and managing bradycardia – PubMed

  https://pubmed.ncbi.nlm.nih.gov/31311698/

  Bradycardia is a commonly observed arrhythmia and a frequent occasion for cardiac consultation. Defined as a heart rate of less than 50-60 bpm, bradycardia can be observed as a normal phenomenon in young athletic individuals, and in patients as part of normal aging or disease. […] Given the overlap of heart rate ranges with non-pathologic changes, assessment of symptoms is a critical component in the evaluation and management of bradycardia. Treatment should rarely be prescribed solely on the basis of a heart rate lower than an arbitrary cutoff or a pause above certain duration. […] In this review, we will highlight the changes in the new guideline as well as describe the key elements in evaluation and management of patients presenting with bradycardia.

• #56 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who are not candidates for permanent pacing or who refuse permanent pacemaker placement may be continued on oral theophylline long-term if they can tolerate it. According to the ACC/AHA/HRS guidelines, observation is recommended for patients with asymptomatic SND. […] Chronic Atrioventricular Block […] Permanent pacing is recommended for all symptomatic patients with bradycardia attributable to AV block, regardless of type. Observation is recommended for asymptomatic patients with marked first-degree AV block, except for those with neuromuscular disease or congenital heart disease. Patients with neuromuscular disease or congenital heart disease should receive cardiac pacing. […] Asymptomatic patients with Mobitz type I heart block without neuromuscular disease associated with conduction disorder can be observed. Permanent pacing is recommended for those with Mobitz type I heart block and neuromuscular disease. Asymptomatic patients with complete heart block, advanced AV block, or Mobitz type II heart block should receive permanent cardiac pacing.

• #57 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  The guideline also includes recommendations on post-procedure surveillance and pacemaker implantation since conduction abnormalities are common after transcatheter aortic valve replacement. […] Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #58 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Before permanent pacemaker placement, patients should be assessed for future risk of developing ventricular arrhythmia to determine whether they require a device with pacing and defibrillator capabilities. Patients with significant comorbidities, infrequent pacing, or permanent atrial fibrillation should be considered for single-chamber ventricular pacing. If these complications are not present, dual-chamber pacing can be considered. […] Conduction Disorders […] Conduction disorders are typically managed with permanent pacing. According to the ACC/AHA/HRS guidelines, permanent pacing is recommended for patients with syncope, bundle branch block, and those at high risk for AV block. Permanent pacing is also recommended for patients with alternating bundle branch block. Patients with reduced left ventricular ejection fraction between 36% and 50%, left bundle branch block, QRS of 150 ms or greater, and New York Heart Association class II to IV heart failure symptoms should receive cardiac resynchronization therapy. Patients who do not meet these criteria but have symptoms suggestive of intermittent AV block should be evaluated for this condition.

• #59 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Before permanent pacemaker placement, patients should be assessed for future risk of developing ventricular arrhythmia to determine whether they require a device with pacing and defibrillator capabilities. Patients with significant comorbidities, infrequent pacing, or permanent atrial fibrillation should be considered for single-chamber ventricular pacing. If these complications are not present, dual-chamber pacing can be considered. […] Conduction Disorders […] Conduction disorders are typically managed with permanent pacing. According to the ACC/AHA/HRS guidelines, permanent pacing is recommended for patients with syncope, bundle branch block, and those at high risk for AV block. Permanent pacing is also recommended for patients with alternating bundle branch block. Patients with reduced left ventricular ejection fraction between 36% and 50%, left bundle branch block, QRS of 150 ms or greater, and New York Heart Association class II to IV heart failure symptoms should receive cardiac resynchronization therapy. Patients who do not meet these criteria but have symptoms suggestive of intermittent AV block should be evaluated for this condition.

• #60 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – Clinical Advisor

  https://www.clinicaladvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  The American College of Cardiology, the American Heart Association and the Heart Rhythm Society have released a guideline on the evaluation and management of patients with bradycardia and cardiac conduction delay. […] The guideline defines bradycardia as a heart rate of less than 50 beats per minute classified into 3 categories: sinus node dysfunction, atrioventricular block, and conduction disorders. […] They evaluated the utility of diagnostic testing tools such as monitoring devices and electrophysiological testing, assessed available treatment options including lifestyle interventions and pharmacotherapy, and commented on the use of external and implanted devices such as pacemakers (temporary and permanent). […] The guideline also includes recommendations on post-procedure surveillance and pacemaker implantation since conduction abnormalities are common after transcatheter aortic valve replacement.

• #61 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Before permanent pacemaker placement, patients should be assessed for future risk of developing ventricular arrhythmia to determine whether they require a device with pacing and defibrillator capabilities. Patients with significant comorbidities, infrequent pacing, or permanent atrial fibrillation should be considered for single-chamber ventricular pacing. If these complications are not present, dual-chamber pacing can be considered. […] Conduction Disorders […] Conduction disorders are typically managed with permanent pacing. According to the ACC/AHA/HRS guidelines, permanent pacing is recommended for patients with syncope, bundle branch block, and those at high risk for AV block. Permanent pacing is also recommended for patients with alternating bundle branch block. Patients with reduced left ventricular ejection fraction between 36% and 50%, left bundle branch block, QRS of 150 ms or greater, and New York Heart Association class II to IV heart failure symptoms should receive cardiac resynchronization therapy. Patients who do not meet these criteria but have symptoms suggestive of intermittent AV block should be evaluated for this condition.

• #62 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – Clinical Advisor

  https://www.clinicaladvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #63 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Bradyarrhythmias occur in up to 25% of patients with an acute myocardial infarction, especially those involving the right coronary artery (RCA) which supplies the SA node in up to 60% of patients. […] Treatment for bradycardia secondary to myocardial infarction is standard care for an occlusive MI, including emergent cardiology consult and cath lab activation, and loading the patient with anti-platelet medications. […] Sick sinus syndrome is most commonly due to aging of the sinus node and surrounding atrial myocytes. It is often associated with severe bradycardia (HR50 bpm). […] Treatment includes permanent pacemaker placement. […] Moderate to severe hypothermia can cause significant bradycardia leading to hypotension. […] Treatment includes removing all wet clothing, externally rewarming with bair huggers and warm blankets, administering warm IV fluids, active core rewarming including bladder and thoracic irrigation with warmed fluids.

• #64 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Treatment […] Management options for bradycardia depend on individual patient characteristics, the severity of symptoms, and the type of bradycardia. The following treatment recommendations reflect the most recent ACC/AHA/HRS guidelines. […] Acute bradycardia requires a stepwise approach to management. After determining that the patient is hemodynamically stable, clinicians should assess and treat reversible causes of bradycardia. Simultaneously, patients with moderate to severe symptoms should receive atropine. Options for acute medical management of bradycardia attributable to SND or AV block include dopamine, epinephrine, and glucagon. […] If drug toxicity is identified in a patient with severe symptoms following atropine administration, preparation for cardiac pacing should proceed while the patient receives treatment for the toxicity. Drug toxicity from calcium channel blockers, beta-blockers, and digoxin are initially treated with intravenous (IV) calcium, IV glucagon, and anti-digoxin Fab fragments, respectively. Following this initial treatment, high-dose insulin is recommended in all 3 cases.

• #65 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Bradyarrhythmias occur in up to 25% of patients with an acute myocardial infarction, especially those involving the right coronary artery (RCA) which supplies the SA node in up to 60% of patients. […] Treatment for bradycardia secondary to myocardial infarction is standard care for an occlusive MI, including emergent cardiology consult and cath lab activation, and loading the patient with anti-platelet medications. […] Sick sinus syndrome is most commonly due to aging of the sinus node and surrounding atrial myocytes. It is often associated with severe bradycardia (HR50 bpm). […] Treatment includes permanent pacemaker placement. […] Moderate to severe hypothermia can cause significant bradycardia leading to hypotension. […] Treatment includes removing all wet clothing, externally rewarming with bair huggers and warm blankets, administering warm IV fluids, active core rewarming including bladder and thoracic irrigation with warmed fluids.

• #66 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who continue to have severe symptoms with hemodynamic instability require acute pacing. Patients who do not meet this criterion and who have second- or third-degree AV block associated with acute inferior MI should receive aminophylline. Beta-agonists are indicated in patients without severe symptoms or MI-related AV block. For patients who continue with symptoms despite these medical therapies, acute pacing is recommended. […] In some cases, patients with bradycardia become hemodynamically unstable despite medical therapy. Patients who are critically ill due to bradycardia require permanent pacing. Transcutaneous pacing is used to stabilize patients while awaiting permanent pacemaker placement. […] Chronic Sinus Node Dysfunction […] When diagnosing SND, clinicians must rule out reversible causes. Reversible or treatable causes of SND include medications, metabolic abnormalities, acute myocardial ischemia or infarction, infections, toxins, and cardiac surgery. Because goal-directed medical therapy for heart failure usually cannot be reversed, permanent pacing is the first-line treatment for bradycardia for patients who require goal-directed medical therapy.

• #67 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Treatment […] Management options for bradycardia depend on individual patient characteristics, the severity of symptoms, and the type of bradycardia. The following treatment recommendations reflect the most recent ACC/AHA/HRS guidelines. […] Acute bradycardia requires a stepwise approach to management. After determining that the patient is hemodynamically stable, clinicians should assess and treat reversible causes of bradycardia. Simultaneously, patients with moderate to severe symptoms should receive atropine. Options for acute medical management of bradycardia attributable to SND or AV block include dopamine, epinephrine, and glucagon. […] If drug toxicity is identified in a patient with severe symptoms following atropine administration, preparation for cardiac pacing should proceed while the patient receives treatment for the toxicity. Drug toxicity from calcium channel blockers, beta-blockers, and digoxin are initially treated with intravenous (IV) calcium, IV glucagon, and anti-digoxin Fab fragments, respectively. Following this initial treatment, high-dose insulin is recommended in all 3 cases.

• #68 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who continue to have severe symptoms with hemodynamic instability require acute pacing. Patients who do not meet this criterion and who have second- or third-degree AV block associated with acute inferior MI should receive aminophylline. Beta-agonists are indicated in patients without severe symptoms or MI-related AV block. For patients who continue with symptoms despite these medical therapies, acute pacing is recommended. […] In some cases, patients with bradycardia become hemodynamically unstable despite medical therapy. Patients who are critically ill due to bradycardia require permanent pacing. Transcutaneous pacing is used to stabilize patients while awaiting permanent pacemaker placement. […] Chronic Sinus Node Dysfunction […] When diagnosing SND, clinicians must rule out reversible causes. Reversible or treatable causes of SND include medications, metabolic abnormalities, acute myocardial ischemia or infarction, infections, toxins, and cardiac surgery. Because goal-directed medical therapy for heart failure usually cannot be reversed, permanent pacing is the first-line treatment for bradycardia for patients who require goal-directed medical therapy.

• #69 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Treatment […] Management options for bradycardia depend on individual patient characteristics, the severity of symptoms, and the type of bradycardia. The following treatment recommendations reflect the most recent ACC/AHA/HRS guidelines. […] Acute bradycardia requires a stepwise approach to management. After determining that the patient is hemodynamically stable, clinicians should assess and treat reversible causes of bradycardia. Simultaneously, patients with moderate to severe symptoms should receive atropine. Options for acute medical management of bradycardia attributable to SND or AV block include dopamine, epinephrine, and glucagon. […] If drug toxicity is identified in a patient with severe symptoms following atropine administration, preparation for cardiac pacing should proceed while the patient receives treatment for the toxicity. Drug toxicity from calcium channel blockers, beta-blockers, and digoxin are initially treated with intravenous (IV) calcium, IV glucagon, and anti-digoxin Fab fragments, respectively. Following this initial treatment, high-dose insulin is recommended in all 3 cases.

• #70 Sinus Bradycardia Workup: Laboratory Studies, Imaging Studies

  https://emedicine.medscape.com/article/760220-workup

  Laboratory studies may be helpful if the cause of the bradycardia is thought to be related to electrolytes, drug, or toxins. In cases of sick sinus syndrome, routine laboratory studies are rarely of specific value. […] Reasonable screening studies, especially if the patient is symptomatic and this is the initial presentation, include the following: Electrolyte levels, Glucose level, Calcium level, Magnesium level, Thyroid function tests, Toxicologic screen, Troponin. […] A 12-lead ECG may be performed to confirm the diagnosis.

• #71 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Bradyarrhythmias occur in up to 25% of patients with an acute myocardial infarction, especially those involving the right coronary artery (RCA) which supplies the SA node in up to 60% of patients. […] Treatment for bradycardia secondary to myocardial infarction is standard care for an occlusive MI, including emergent cardiology consult and cath lab activation, and loading the patient with anti-platelet medications. […] Sick sinus syndrome is most commonly due to aging of the sinus node and surrounding atrial myocytes. It is often associated with severe bradycardia (HR50 bpm). […] Treatment includes permanent pacemaker placement. […] Moderate to severe hypothermia can cause significant bradycardia leading to hypotension. […] Treatment includes removing all wet clothing, externally rewarming with bair huggers and warm blankets, administering warm IV fluids, active core rewarming including bladder and thoracic irrigation with warmed fluids.

• #72 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Classic symptoms of myxedema coma include: Decreased mentation or delirium, Hypothermia, Bradycardia, Hyponatremia, Hypoglycemia, Hypoventilation, Hypotension. […] Treatment includes IV atropine if unstable while treating the underlying condition (IV steroids, IV levothyroxine). […] Classic triad of bradycardia, respiratory depression, and hypertension (Cushing reflex), concerning for brainstem compression and/or herniation. […] Treatment includes treating the underlying condition, and stabilization through maneuvers including Hyperventilation, Head of the bed elevation to maximize venous outflow, Ensure neck braces (c-collar) is appropriately placed (not too tight), Hypertonic solutions like mannitol or hypertonic saline, Emergent craniotomy.”

• #73 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Classic symptoms of myxedema coma include: Decreased mentation or delirium, Hypothermia, Bradycardia, Hyponatremia, Hypoglycemia, Hypoventilation, Hypotension. […] Treatment includes IV atropine if unstable while treating the underlying condition (IV steroids, IV levothyroxine). […] Classic triad of bradycardia, respiratory depression, and hypertension (Cushing reflex), concerning for brainstem compression and/or herniation. […] Treatment includes treating the underlying condition, and stabilization through maneuvers including Hyperventilation, Head of the bed elevation to maximize venous outflow, Ensure neck braces (c-collar) is appropriately placed (not too tight), Hypertonic solutions like mannitol or hypertonic saline, Emergent craniotomy.”

• #74 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  Tilt table test. Your doctor may order this test if your bradycardia is causing fainting spells. It changes your position from lying down to standing and lets your doctor see if this change triggers a fainting spell. […] Stress exercise test. Your doctor may order this test to see how your heart does while you ride an exercise bike or walk on a treadmill. […] Sleep study. Your doctor may order this test to see if you have obstructive sleep apnea that is causing your slow heart rate. […] Blood tests that detect things such as: […] Electrolyte levels, especially calcium, potassium, and magnesium […] Thyroid hormone levels (Low thyroid hormone levels can cause bradycardia.) […] Troponin, which is a protein made by your heart when it has been damaged […] Drugs that cause heart damage or bradycardia, in a test called a toxicology screen.

• #75 Differential Diagnosis: Bradycardia

  https://www.ebmconsult.com/articles/differential-diagnosis-bradycardia

  Bradycardia: Differential Diagnosis […] A pulse of 60 bpm is considered bradycardia in adults, whereas in newborns a pulse 60 bpm with evidence of low perfusion considered a reflection of a life threatening situation where chest compressions are recommended to be started. […] Pathophysiology: Reduces chronotropy via inhibition of SA Node and AV nodal. […] Pathophysiology: Slowing of AV nodal conduction in the heart. […] Pathophysiology: Increase vagal or parasympathetic mediated tone on the AV node, thereby reducing the pulse. […] Pathophysiology: Cushing’s triad or reflex (hypertension + bradycardia + widening pulse pressure [increased systolic BP compared to the diastolic pressure) that occurs with rising intracranial pressure (ICP) with resulting impending risk of brain stem herniation.

• #76 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Classic symptoms of myxedema coma include: Decreased mentation or delirium, Hypothermia, Bradycardia, Hyponatremia, Hypoglycemia, Hypoventilation, Hypotension. […] Treatment includes IV atropine if unstable while treating the underlying condition (IV steroids, IV levothyroxine). […] Classic triad of bradycardia, respiratory depression, and hypertension (Cushing reflex), concerning for brainstem compression and/or herniation. […] Treatment includes treating the underlying condition, and stabilization through maneuvers including Hyperventilation, Head of the bed elevation to maximize venous outflow, Ensure neck braces (c-collar) is appropriately placed (not too tight), Hypertonic solutions like mannitol or hypertonic saline, Emergent craniotomy.”

• #77 Symptomatic Bradycardia: Considering the Differential — NUEM Blog

  https://www.nuemblog.com/blog/symptomatic-bradycardia

  Classic symptoms of myxedema coma include: Decreased mentation or delirium, Hypothermia, Bradycardia, Hyponatremia, Hypoglycemia, Hypoventilation, Hypotension. […] Treatment includes IV atropine if unstable while treating the underlying condition (IV steroids, IV levothyroxine). […] Classic triad of bradycardia, respiratory depression, and hypertension (Cushing reflex), concerning for brainstem compression and/or herniation. […] Treatment includes treating the underlying condition, and stabilization through maneuvers including Hyperventilation, Head of the bed elevation to maximize venous outflow, Ensure neck braces (c-collar) is appropriately placed (not too tight), Hypertonic solutions like mannitol or hypertonic saline, Emergent craniotomy.”

• #78 Evaluating and managing bradycardia – PubMed

  https://pubmed.ncbi.nlm.nih.gov/31311698/

  Bradycardia is a commonly observed arrhythmia and a frequent occasion for cardiac consultation. Defined as a heart rate of less than 50-60 bpm, bradycardia can be observed as a normal phenomenon in young athletic individuals, and in patients as part of normal aging or disease. […] Given the overlap of heart rate ranges with non-pathologic changes, assessment of symptoms is a critical component in the evaluation and management of bradycardia. Treatment should rarely be prescribed solely on the basis of a heart rate lower than an arbitrary cutoff or a pause above certain duration. […] In this review, we will highlight the changes in the new guideline as well as describe the key elements in evaluation and management of patients presenting with bradycardia.

• #79 Bradycardia: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/17841-bradycardia

  Electrocardiogram (ECG or EKG). This test is essential for diagnosing bradycardia because it can track your hearts electrical activity very precisely. […] If you have bradycardia but dont have any symptoms, its unlikely that you need treatment. For those who do have symptoms, bradycardia is almost always treatable and is sometimes curable. […] There are two primary ways to treat bradycardia. […] For many people with bradycardia, a permanent pacemaker is the best way to treat this condition. This is especially effective with conditions like sick sinus syndrome, where your hearts natural pacemaker cells arent working properly. […] Complications from bradycardia are more likely to happen when this condition goes too long without treatment. […] Bradycardia is not a condition you should attempt to care for on your own without help from a healthcare provider. If you suspect you have it, you should see your provider (and sooner is better than later). […] For people who do have symptoms or problems because of bradycardia, youre more likely to have a good outcome with early diagnosis and treatment. Delays in treatment, especially when bradycardia happens because of certain conditions, usually increase your risk of complications or death.

• #80 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Treatment […] Management options for bradycardia depend on individual patient characteristics, the severity of symptoms, and the type of bradycardia. The following treatment recommendations reflect the most recent ACC/AHA/HRS guidelines. […] Acute bradycardia requires a stepwise approach to management. After determining that the patient is hemodynamically stable, clinicians should assess and treat reversible causes of bradycardia. Simultaneously, patients with moderate to severe symptoms should receive atropine. Options for acute medical management of bradycardia attributable to SND or AV block include dopamine, epinephrine, and glucagon. […] If drug toxicity is identified in a patient with severe symptoms following atropine administration, preparation for cardiac pacing should proceed while the patient receives treatment for the toxicity. Drug toxicity from calcium channel blockers, beta-blockers, and digoxin are initially treated with intravenous (IV) calcium, IV glucagon, and anti-digoxin Fab fragments, respectively. Following this initial treatment, high-dose insulin is recommended in all 3 cases.

• #81 Symptomatic Bradycardia Causes and Treatment – ACLS.com

  https://acls.com/articles/symptomatic-bradycardia-adequate-versus-poor-perfusion/

  Further testing of patients with bradycardia after the initial history and physical should include a 12-lead ECG, which might suggest structural heart disease, conduction disturbance, or other cardiac conditions that may predispose patients to bradyarrhythmias. […] A bradycardic rhythm is most often treated only when symptoms are present. If reversible causes aren’t immediately identified and/or if reversing the cause is taking too long, pharmacologic interventions are the first-line approach for bradycardia treatment. Atropine 0.5 mg intravenous (IV) is given up to a total of 3 mg. Atropine sulfate acts by reversing the cholinergic-mediated decreases in the heart rate and AV node conduction. […] Permanent pacemaker implantation is the definitive treatment for a patient with chronic symptomatic sinus node dysfunction.

• #82 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Bradycardia Treatment […] Management options for bradycardia depend on individual patient characteristics, the severity of symptoms, and the type of bradycardia. The following treatment recommendations reflect the most recent ACC/AHA/HRS guidelines. […] Acute bradycardia requires a stepwise approach to management. After determining that the patient is hemodynamically stable, clinicians should assess and treat reversible causes of bradycardia. Simultaneously, patients with moderate to severe symptoms should receive atropine. Options for acute medical management of bradycardia attributable to SND or AV block include dopamine, epinephrine, and glucagon. […] If drug toxicity is identified in a patient with severe symptoms following atropine administration, preparation for cardiac pacing should proceed while the patient receives treatment for the toxicity. Drug toxicity from calcium channel blockers, beta-blockers, and digoxin are initially treated with intravenous (IV) calcium, IV glucagon, and anti-digoxin Fab fragments, respectively. Following this initial treatment, high-dose insulin is recommended in all 3 cases.

• #83 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who continue to have severe symptoms with hemodynamic instability require acute pacing. Patients who do not meet this criterion and who have second- or third-degree AV block associated with acute inferior MI should receive aminophylline. Beta-agonists are indicated in patients without severe symptoms or MI-related AV block. For patients who continue with symptoms despite these medical therapies, acute pacing is recommended. […] In some cases, patients with bradycardia become hemodynamically unstable despite medical therapy. Patients who are critically ill due to bradycardia require permanent pacing. Transcutaneous pacing is used to stabilize patients while awaiting permanent pacemaker placement. […] Chronic Sinus Node Dysfunction […] When diagnosing SND, clinicians must rule out reversible causes. Reversible or treatable causes of SND include medications, metabolic abnormalities, acute myocardial ischemia or infarction, infections, toxins, and cardiac surgery. Because goal-directed medical therapy for heart failure usually cannot be reversed, permanent pacing is the first-line treatment for bradycardia for patients who require goal-directed medical therapy.

• #84 Sinus Bradycardia: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/22473-sinus-bradycardia

  Sinus bradycardia is a heart rhythm where your heart beats slower than expected (under 60 beats per minute for adults) but otherwise works normally. Its typically treatable with medications or a permanent pacemaker. […] A healthcare provider, usually your doctor, can diagnose sinus bradycardia using a combination of diagnostic tests and methods. […] While a physical exam alone is enough to diagnose sinus bradycardia, its only possible with a specific type of test called an electrocardiogram (ECG or EKG). […] EKGs analyze your hearts electrical activity through several sensors called electrodes, which stick to the skin of your chest. […] If your heartbeat is slow but otherwise normal, thats all a doctor needs to diagnose sinus bradycardia. […] Sinus bradycardia usually doesnt need treatment unless you have symptoms.

• #85 Sinus Bradycardia: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/22473-sinus-bradycardia

  Treating sinus bradycardia can happen in two main ways for people who have symptoms: Medication or devices that use electrical energy to artificially stimulate your heart muscle (commonly known as pacemakers). […] Your healthcare provider is the best person to tell you what side effects to expect from any treatments, medications or procedures to treat your sinus bradycardia. […] The best course of action is to see your healthcare provider if you have sinus bradycardia symptoms. […] Most people who have sinus bradycardia wont have symptoms, and it wont affect your life in any way that you can see.

• #86 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Undiagnosed sleep apnea is often an underlying reversible cause of nocturnal bradycardia. Patients should be screened for sleep apnea and receive treatment for confirmed sleep apnea before receiving treatment for nocturnal bradycardia. […] For patients who exhibit bradycardia without reversible causes, permanent pacing is the primary treatment approach. In cases where the etiology of symptoms related to bradycardia remains ambiguous and no reversible causes have been identified, oral theophylline is recommended before considering permanent cardiac pacing. Based on response to theophylline, patients may be considered for permanent pacing. Placing a single- or dual-chamber pacemaker depends on the initial response to pacing and whether a patient has normal AV conduction or an indication to avoid a right ventricular lead.

• #87 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who are not candidates for permanent pacing or who refuse permanent pacemaker placement may be continued on oral theophylline long-term if they can tolerate it. According to the ACC/AHA/HRS guidelines, observation is recommended for patients with asymptomatic SND. […] Chronic Atrioventricular Block […] Permanent pacing is recommended for all symptomatic patients with bradycardia attributable to AV block, regardless of type. Observation is recommended for asymptomatic patients with marked first-degree AV block, except for those with neuromuscular disease or congenital heart disease. Patients with neuromuscular disease or congenital heart disease should receive cardiac pacing. […] Asymptomatic patients with Mobitz type I heart block without neuromuscular disease associated with conduction disorder can be observed. Permanent pacing is recommended for those with Mobitz type I heart block and neuromuscular disease. Asymptomatic patients with complete heart block, advanced AV block, or Mobitz type II heart block should receive permanent cardiac pacing.

• #88 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  The guideline also includes recommendations on post-procedure surveillance and pacemaker implantation since conduction abnormalities are common after transcatheter aortic valve replacement. […] Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #89 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – Clinical Advisor

  https://www.clinicaladvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #90 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who continue to have severe symptoms with hemodynamic instability require acute pacing. Patients who do not meet this criterion and who have second- or third-degree AV block associated with acute inferior MI should receive aminophylline. Beta-agonists are indicated in patients without severe symptoms or MI-related AV block. For patients who continue with symptoms despite these medical therapies, acute pacing is recommended. […] In some cases, patients with bradycardia become hemodynamically unstable despite medical therapy. Patients who are critically ill due to bradycardia require permanent pacing. Transcutaneous pacing is used to stabilize patients while awaiting permanent pacemaker placement. […] Chronic Sinus Node Dysfunction […] When diagnosing SND, clinicians must rule out reversible causes. Reversible or treatable causes of SND include medications, metabolic abnormalities, acute myocardial ischemia or infarction, infections, toxins, and cardiac surgery. Because goal-directed medical therapy for heart failure usually cannot be reversed, permanent pacing is the first-line treatment for bradycardia for patients who require goal-directed medical therapy.

• #91 Symptomatic Bradycardia Causes and Treatment – ACLS.com

  https://acls.com/articles/symptomatic-bradycardia-adequate-versus-poor-perfusion/

  Further testing of patients with bradycardia after the initial history and physical should include a 12-lead ECG, which might suggest structural heart disease, conduction disturbance, or other cardiac conditions that may predispose patients to bradyarrhythmias. […] A bradycardic rhythm is most often treated only when symptoms are present. If reversible causes aren’t immediately identified and/or if reversing the cause is taking too long, pharmacologic interventions are the first-line approach for bradycardia treatment. Atropine 0.5 mg intravenous (IV) is given up to a total of 3 mg. Atropine sulfate acts by reversing the cholinergic-mediated decreases in the heart rate and AV node conduction. […] Permanent pacemaker implantation is the definitive treatment for a patient with chronic symptomatic sinus node dysfunction.

• #92 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Undiagnosed sleep apnea is often an underlying reversible cause of nocturnal bradycardia. Patients should be screened for sleep apnea and receive treatment for confirmed sleep apnea before receiving treatment for nocturnal bradycardia. […] For patients who exhibit bradycardia without reversible causes, permanent pacing is the primary treatment approach. In cases where the etiology of symptoms related to bradycardia remains ambiguous and no reversible causes have been identified, oral theophylline is recommended before considering permanent cardiac pacing. Based on response to theophylline, patients may be considered for permanent pacing. Placing a single- or dual-chamber pacemaker depends on the initial response to pacing and whether a patient has normal AV conduction or an indication to avoid a right ventricular lead.

• #93 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  A sleep study may be suggested if you have repeated pauses in breathing during sleep, called obstructive sleep apnea. […] If you have severe bradycardia symptoms and other treatments aren’t possible, your health professional may suggest a device called a pacemaker. […] A pacemaker is placed under the skin near the collarbone during a minor surgery. The device helps fix a slow heartbeat.

• #94 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Undiagnosed sleep apnea is often an underlying reversible cause of nocturnal bradycardia. Patients should be screened for sleep apnea and receive treatment for confirmed sleep apnea before receiving treatment for nocturnal bradycardia. […] For patients who exhibit bradycardia without reversible causes, permanent pacing is the primary treatment approach. In cases where the etiology of symptoms related to bradycardia remains ambiguous and no reversible causes have been identified, oral theophylline is recommended before considering permanent cardiac pacing. Based on response to theophylline, patients may be considered for permanent pacing. Placing a single- or dual-chamber pacemaker depends on the initial response to pacing and whether a patient has normal AV conduction or an indication to avoid a right ventricular lead.

• #95 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who are not candidates for permanent pacing or who refuse permanent pacemaker placement may be continued on oral theophylline long-term if they can tolerate it. According to the ACC/AHA/HRS guidelines, observation is recommended for patients with asymptomatic SND. […] Chronic Atrioventricular Block […] Permanent pacing is recommended for all symptomatic patients with bradycardia attributable to AV block, regardless of type. Observation is recommended for asymptomatic patients with marked first-degree AV block, except for those with neuromuscular disease or congenital heart disease. Patients with neuromuscular disease or congenital heart disease should receive cardiac pacing. […] Asymptomatic patients with Mobitz type I heart block without neuromuscular disease associated with conduction disorder can be observed. Permanent pacing is recommended for those with Mobitz type I heart block and neuromuscular disease. Asymptomatic patients with complete heart block, advanced AV block, or Mobitz type II heart block should receive permanent cardiac pacing.

• #96 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who are not candidates for permanent pacing or who refuse permanent pacemaker placement may be continued on oral theophylline long-term if they can tolerate it. According to the ACC/AHA/HRS guidelines, observation is recommended for patients with asymptomatic SND. […] Chronic Atrioventricular Block […] Permanent pacing is recommended for all symptomatic patients with bradycardia attributable to AV block, regardless of type. Observation is recommended for asymptomatic patients with marked first-degree AV block, except for those with neuromuscular disease or congenital heart disease. Patients with neuromuscular disease or congenital heart disease should receive cardiac pacing. […] Asymptomatic patients with Mobitz type I heart block without neuromuscular disease associated with conduction disorder can be observed. Permanent pacing is recommended for those with Mobitz type I heart block and neuromuscular disease. Asymptomatic patients with complete heart block, advanced AV block, or Mobitz type II heart block should receive permanent cardiac pacing.

• #97 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – Clinical Advisor

  https://www.clinicaladvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #98 Bradycardia | Diagnosis & Disease Information – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/ddi/bradycardia/

  Patients who are not candidates for permanent pacing or who refuse permanent pacemaker placement may be continued on oral theophylline long-term if they can tolerate it. According to the ACC/AHA/HRS guidelines, observation is recommended for patients with asymptomatic SND. […] Chronic Atrioventricular Block […] Permanent pacing is recommended for all symptomatic patients with bradycardia attributable to AV block, regardless of type. Observation is recommended for asymptomatic patients with marked first-degree AV block, except for those with neuromuscular disease or congenital heart disease. Patients with neuromuscular disease or congenital heart disease should receive cardiac pacing. […] Asymptomatic patients with Mobitz type I heart block without neuromuscular disease associated with conduction disorder can be observed. Permanent pacing is recommended for those with Mobitz type I heart block and neuromuscular disease. Asymptomatic patients with complete heart block, advanced AV block, or Mobitz type II heart block should receive permanent cardiac pacing.

• #99 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  The guideline also includes recommendations on post-procedure surveillance and pacemaker implantation since conduction abnormalities are common after transcatheter aortic valve replacement. […] Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #100 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – The Cardiology Advisor

  https://www.thecardiologyadvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  The guideline also includes recommendations on post-procedure surveillance and pacemaker implantation since conduction abnormalities are common after transcatheter aortic valve replacement. […] Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #101 ACC/AHA/HRS Release Updated Bradycardia Diagnosis and Management Guidelines – Clinical Advisor

  https://www.clinicaladvisor.com/news/acc-aha-hrs-release-updated-bradycardia-diagnosis-and-management-guidelines/

  Permanent pacing is recommended regardless of symptomatology in patients with acquired second-degree Mobitz type II atrioventricular block, high-grade atrioventricular block, or third-degree atrioventricular block not caused by reversible physiologic causes. […] Post-procedure surveillance is recommended after transcatheter aortic valve replacement due to conduction system abnormalities. […] Shared decision-making and patient-centered care are emphasized for patients who have indications for pacemaker implantation. […] Further research into identifying patients who will likely benefit the most from new, emerging pacemaker technology like His bundle pacing should be conducted.

• #102 Bradycardia – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/bradycardia/diagnosis-treatment/drc-20355480

  To diagnose bradycardia, a healthcare professional examines you and listens to your heart with a stethoscope. You are usually asked questions about your symptoms and medical history. […] Tests may be done to check your heart and look for conditions that can cause bradycardia. […] Electrocardiogram (ECG or EKG). This is the main test used to diagnose bradycardia. An ECG measures the electrical activity of the heart. It shows how the heart is beating. […] If a standard ECG doesn’t show an irregular heartbeat, your healthcare professional may suggest a Holter monitor. […] This device is similar to a Holter monitor, but it records only at certain times for a few minutes at a time. […] This test may be done if you’ve had fainting spells. […] Some irregular heartbeats are triggered or made worse by exercise.

• #103 Bradycardia (Low Heart Rate): Symptoms, Causes, and Treatment

  https://www.webmd.com/heart-disease/atrial-fibrillation/bradycardia

  EKG readings are the most important test your doctor will use to diagnose you with bradycardia. […] Your doctor will likely diagnose you based on a physical exam and tests, such as: […] EKG. This test measures your hearts electrical activity using sensors (electrodes) that stick to the skin of your chest. These electrodes sense the electrical activity of your heart. It is the most important test your doctor will use to diagnose if you have bradycardia. […] Holter monitor. This is a wearable version of an EKG, which records your heart’s activity continuously over about 24 hours so your doctor can see your heart’s rhythm over a longer time. […] Event recorder. This is like a Holter monitor, but it records only at specific times for a few minutes. You may need to push a button whenever you notice symptoms, or the recorder may be set to automatically record whenever it detects a low heart rate.

• #104 Bradycardia – Symptoms, diagnosis and treatment | BMJ Best Practice

  https://bestpractice.bmj.com/topics/en-gb/832

  Sinus bradycardia is any heart rhythm slower than 50 bpm, even if transient, owing to sinus node dysfunction and/or atrioventricular (AV) conduction abnormalities. […] Evaluation involves determining the association of symptoms with heart rate and an assessment of underlying cardiovascular conditions. A 12-lead ECG and/or a heart monitor are the diagnostic tests of choice. […] Diagnostic tests include 12-lead ECG, Holter monitoring, event monitor/mobile cardiac telemetry, exercise testing, carotid sinus massage, echocardiogram, thyroid function tests, basic metabolic panel, arterial blood gas, cardiac biomarkers, serum digoxin level, and serum creatinine. […] Tests to consider include implantable-loop recorder, tilt-table testing, Lyme titres, electrophysiology testing, and nocturnal pulse oximetry or overnight polysomnography.

• #105 Bradycardia – Symptoms, diagnosis and treatment | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/832

  Sinus bradycardia is any heart rhythm slower than 50 bpm, even if transient, owing to sinus node dysfunction and/or atrioventricular (AV) conduction abnormalities. […] Evaluation involves determining the association of symptoms with heart rate and an assessment of underlying cardiovascular conditions. A 12-lead ECG and/or a heart monitor are the diagnostic tests of choice. […] Diagnostic tests include 12-lead ECG, Holter monitoring, event monitor/mobile cardiac telemetry, exercise testing, carotid sinus massage, echocardiogram, thyroid function tests, basic metabolic panel, arterial blood gas, cardiac biomarkers, serum digoxin level, and serum creatinine. […] Tests to consider include implantable-loop recorder, tilt-table testing, Lyme titers, electrophysiology testing, and nocturnal pulse oximetry or overnight polysomnography.

• #106 Bradycardia: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/17841-bradycardia

  Electrocardiogram (ECG or EKG). This test is essential for diagnosing bradycardia because it can track your hearts electrical activity very precisely. […] If you have bradycardia but dont have any symptoms, its unlikely that you need treatment. For those who do have symptoms, bradycardia is almost always treatable and is sometimes curable. […] There are two primary ways to treat bradycardia. […] For many people with bradycardia, a permanent pacemaker is the best way to treat this condition. This is especially effective with conditions like sick sinus syndrome, where your hearts natural pacemaker cells arent working properly. […] Complications from bradycardia are more likely to happen when this condition goes too long without treatment. […] Bradycardia is not a condition you should attempt to care for on your own without help from a healthcare provider. If you suspect you have it, you should see your provider (and sooner is better than later). […] For people who do have symptoms or problems because of bradycardia, youre more likely to have a good outcome with early diagnosis and treatment. Delays in treatment, especially when bradycardia happens because of certain conditions, usually increase your risk of complications or death.

• #107 Sinus Bradycardia: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/22473-sinus-bradycardia

  Treating sinus bradycardia can happen in two main ways for people who have symptoms: Medication or devices that use electrical energy to artificially stimulate your heart muscle (commonly known as pacemakers). […] Your healthcare provider is the best person to tell you what side effects to expect from any treatments, medications or procedures to treat your sinus bradycardia. […] The best course of action is to see your healthcare provider if you have sinus bradycardia symptoms. […] Most people who have sinus bradycardia wont have symptoms, and it wont affect your life in any way that you can see.

• #108 Bradycardia: Symptoms, Causes & Treatment

  https://my.clevelandclinic.org/health/diseases/17841-bradycardia

  Electrocardiogram (ECG or EKG). This test is essential for diagnosing bradycardia because it can track your hearts electrical activity very precisely. […] If you have bradycardia but dont have any symptoms, its unlikely that you need treatment. For those who do have symptoms, bradycardia is almost always treatable and is sometimes curable. […] There are two primary ways to treat bradycardia. […] For many people with bradycardia, a permanent pacemaker is the best way to treat this condition. This is especially effective with conditions like sick sinus syndrome, where your hearts natural pacemaker cells arent working properly. […] Complications from bradycardia are more likely to happen when this condition goes too long without treatment. […] Bradycardia is not a condition you should attempt to care for on your own without help from a healthcare provider. If you suspect you have it, you should see your provider (and sooner is better than later). […] For people who do have symptoms or problems because of bradycardia, youre more likely to have a good outcome with early diagnosis and treatment. Delays in treatment, especially when bradycardia happens because of certain conditions, usually increase your risk of complications or death.

• #109 Evaluating and managing bradycardia – PubMed

  https://pubmed.ncbi.nlm.nih.gov/31311698/

  Bradycardia is a commonly observed arrhythmia and a frequent occasion for cardiac consultation. Defined as a heart rate of less than 50-60 bpm, bradycardia can be observed as a normal phenomenon in young athletic individuals, and in patients as part of normal aging or disease. […] Given the overlap of heart rate ranges with non-pathologic changes, assessment of symptoms is a critical component in the evaluation and management of bradycardia. Treatment should rarely be prescribed solely on the basis of a heart rate lower than an arbitrary cutoff or a pause above certain duration. […] In this review, we will highlight the changes in the new guideline as well as describe the key elements in evaluation and management of patients presenting with bradycardia.

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