Materiały źródłowe

• #1 Ventricular fibrillation – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/ventricular-fibrillation/symptoms-causes/syc-20364523

  Ventricular fibrillation is a type of irregular heart rhythm (arrhythmia). During ventricular fibrillation, the lower heart chambers contract in a very rapid and uncoordinated manner. As a result, the heart doesn’t pump blood to the rest of the body. […] Collapse and loss of consciousness are the most common symptoms of ventricular fibrillation. […] Before a ventricular fibrillation episode, you may have symptoms of an irregularly fast or erratic heartbeat (arrhythmia). You may have: Chest pain, Very fast heartbeat (tachycardia), Dizziness, Nausea, Shortness of breath. […] Without immediate treatment, ventricular fibrillation can cause death within minutes. The condition’s rapid, erratic heartbeats cause the heart to abruptly stop pumping blood to the body. Blood pressure drops suddenly and significantly. The longer the body lacks blood, the greater the risk of damage to the brain and other organs. […] Ventricular fibrillation is the most frequent cause of sudden cardiac death. The risk of other long-term complications depends on how fast treatment is received.

• #2 Ventricular Fibrillation (V-Fib): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21878-ventricular-fibrillation

  Ventricular fibrillation (or v-fib, for short) is an abnormal heart rhythm that makes your lower heart chambers move quickly and randomly. This life-threatening condition affects your lower heart chambers ability to pump blood. You need immediate medical care for this condition. […] Ventricular fibrillation (v-fib or VF, for short) is the most common deadly arrhythmia. With this irregular heart rhythm, your hearts lower chambers (ventricles) beat in an erratic way. They quiver or twitch instead of expanding and squeezing. This means they cant pump blood as they should. […] Just before v-fib, you may have these ventricular fibrillation symptoms: Chest pain (angina). Dizziness or lightheadedness. Nausea. Racing or erratic pulse (including other types of arrhythmia). Heart palpitations (where you become unpleasantly aware of your own heartbeat). Shortness of breath.

• #3 Ventricular Fibrillation | Conditions | UCSF Health

  https://www.ucsfhealth.org/conditions/ventricular-fibrillation

  Ventricular fibrillation is a condition in which the heart’s electrical activity becomes disordered. When this happens, the heart’s ventricles, the lower chambers that pump blood, contract in a rapid, unsynchronized way. The ventricles „flutter” rather than beat, causing the heart to pump little or no blood. Ventricular fibrillation is life-threatening and requires prompt treatment. Collapse and sudden cardiac death will follow in minutes unless medical help is provided immediately. If treated in time, ventricular fibrillation can be converted into a normal rhythm by shocking the heart with a device called a defibrillator. […] An abnormal heart rhythm is a change in either the speed or the pattern of the heartbeat the heart may beat too slowly, too rapidly or irregularly. […] A heart that beats too fast or too slow can cause: Lightheadedness or dizziness, Palpitations (skipping, fluttering or pounding in the chest), Fatigue, Chest pressure or pain, Shortness of breath, Fainting spells.

• #4 Ventricular Fibrillation | Symptoms and Treatment| MedStar Health

  https://www.medstarhealth.org/services/ventricular-fibrillation

  Ventricular fibrillation, also known as VFib, is a serious type of heart rhythm disorder that involves the heart quivering or twitching. The most common symptoms are loss of consciousness and trouble breathing. A person with ventricular fibrillation may not be breathing at all or may only be able to gasp for air. Chest pain, dizziness and nausea are other possible signs of this condition. […] Without lifesaving care, ventricular fibrillation can be fatal. Emergency, lifesaving treatment for ventricular fibrillation includes CPR and defibrillation.

• #5 Ventricular fibrillation: Treatment, causes, and symptoms

  https://www.medicalnewstoday.com/articles/188837

  Ventricular fibrillation is a cardiac disturbance that causes abnormal heart rhythms and can be fatal. […] VF can lead to cardiac arrest within minutes if a person does not receive immediate help. […] The most common signs of VF are sudden collapse or fainting because the muscles and brain have stopped receiving blood from the heart. […] Symptoms include: shortness of breath, nausea and vomiting, a worsening of chest pain or angina, swelling in the feet due to fluid retention, a loss of consciousness, no pulse. […] Without urgent help, a person is unlikely to survive. […] VF happens when defective electrical impulses cause the ventricles to quiver instead of pumping. When this happens, they cannot supply the body with blood. Vital organs, including the brain, lose their blood supply and stop working.

• #6

  https://www.nccs.com.sg/patient-care/conditions-treatments/ventricular-fibrillation

  Ventricular fibrillation occurs when there is rapid or chaotic heartbeat due to the ventricles (lower chambers of the heart) beating too fast and losing its pump function. It is a life-threatening and emergency condition. […] The main symptom of ventricular fibrillation is losing consciousness and sudden cardiac arrest. […] Another early sign of symptom is ventricular tachycardia, a very rapid, but regular heartbeat of 100 beats or more a minute occurring in the lower chambers (ventricles) of the heart. If ventricular tachycardia is left untreated, it can lead to ventricular fibrillation. Patient with ventricular tachycardia may feel palpitations, chest discomfort/pain, shortness of breath or giddiness. […] Seek immediate medical help if heart palpitations are accompanied by the following symptoms: Severe chest pain, Shortness of breath, Unusual sweating, Loss of consciousness. […] Ventricular fibrillation is characterised by very fast and very irregular heartbeats. It is a form of arrhythmia and is usually due to poor functioning of the hearts ventricles. A patient could lose consciousness within seconds and die within minutes.

• #7 Ventricular fibrillation: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/007200.htm

  Ventricular fibrillation (VF) is a severely abnormal heart rhythm (arrhythmia) that is life threatening. […] A person who has a VF episode will suddenly collapse and become unconscious. This happens because the brain and muscles are not receiving blood from the heart. […] The following symptoms may occur within minutes to 1 hour before the collapse: Chest pain, Dizziness, Nausea, Rapid or irregular heartbeat (palpitations), Shortness of breath. […] VF will lead to death within a few minutes unless it is treated quickly and properly. Even then, long-term survival for people who live through a VF attack outside of the hospital is low. […] People who have survived VF may be in a coma or have long-term brain or other organ damage.

• #8 Ventricular fibrillation // Middlesex Health

  https://middlesexhealth.org/learning-center/diseases-and-conditions/ventricular-fibrillation

  Collapse and loss of consciousness are the most common symptoms of ventricular fibrillation. […] Before a ventricular fibrillation episode, you may have symptoms of an irregularly fast or erratic heartbeat (arrhythmia). You may have: Chest pain, Very fast heartbeat (tachycardia), Dizziness, Nausea, Shortness of breath. […] Without immediate treatment, ventricular fibrillation can cause death within minutes. The condition’s rapid, erratic heartbeats cause the heart to abruptly stop pumping blood to the body. Blood pressure drops suddenly and significantly. The longer the body lacks blood, the greater the risk of damage to the brain and other organs. […] Ventricular fibrillation is the most frequent cause of sudden cardiac death. The risk of other long-term complications depends on how fast treatment is received.

• #9 Ventricular Fibrillation (V-Fib): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21878-ventricular-fibrillation

  Someone who has this condition will collapse with little or no warning and wont respond or react when you try to wake them. Theyll also gasp for breath or stop breathing. […] Its rare for people to make a complete recovery from v-fib. Contact your provider for help managing lingering issues after ventricular fibrillation. […] This condition is a life-threatening medical emergency. Every minute counts. Ventricular fibrillation treatment starts with calling your local emergency number. […] If you survive a ventricular fibrillation rhythm, youre at a higher risk of it happening again. Your healthcare provider will run tests to find out what caused it and what follow-up options will work best to keep it from happening again. […] Your outlook with ventricular fibrillation depends on how quickly someone helps you. With quick treatment, up to 50% of people can survive. Without immediate treatment, a ventricular fibrillation rhythm is fatal. For each minute you wait for defibrillation, your chance of survival drops by 7% to 10%.

• #10 Ventricular Fibrillation

  https://www.rwjbh.org/treatment-care/heart-and-vascular-care/diseases-conditions/ventricular-fibrillation/

  However, ventricular fibrillation (VFib) is considered the most serious cardiac rhythm disturbance. Anyone who experiences an acute onset of chest pain, fullness, discomfort or pressure; shortness of breath; fatigue; experiences nausea, vomiting or lightheadedness should call 911 immediately. The acute onset of these symptoms could indicate the early stages of ventricular fibrillation, sudden cardiac arrest or another cardiac-related condition. […] Some people with ventricular fibrillation have no symptoms. Others are unaware of their condition until it’s discovered during a physical examination. Those who do have ventricular fibrillation symptoms may experience the following: Chest pain, fullness, discomfort or pressure. Confused or impaired thinking. F.A.S.T: face drooping, arm weakness, speech difficulty and time to call 911. General fatigue or fatigue when exercising. Rapid heart rate (tachycardia) of over 100 beats per minute. Heart palpitations. Lightheadedness/Fainting. Shortness of breath. Cold sweat.

• #11 Ventricular Fibrillation: Symptoms & Causes | Mass General Brigham

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

  Ventricular fibrillation often strikes suddenly and not everyone experiences symptoms, but there may be warning signs before it occurs. V-fib symptoms include: Heart palpitations (feeling like your heart is racing, fluttering, or pounding) […] If you or someone near you suddenly collapses or shows v-fib symptoms, call 911. […] When V-fib occurs, the heart cannot pump oxygen-rich blood to the body. Without this essential blood flow, the brain and other organs are deprived of oxygen, leading to unconsciousness. If left untreated, VF can quickly become life-threatening. […] Ventricular fibrillation is fatal without treatment because it stops the heart from pumping blood to the body. Without blood flow, vital organs like the brain can’t function.

• #12 Ventricular Fibrillation | American Heart Association

  https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/ventricular-fibrillation

  Ventricular fibrillation, or VF, is considered the most serious abnormal heart rhythm. VF is extremely dangerous and can lead to sudden cardiac death. Without treatment, the condition is fatal within minutes. […] Ventricular fibrillation can cause sudden cardiac arrest, which requires immediate medical attention. Signs of cardiac arrest include: Loss of consciousness, Not breathing or only gasping for breath, Sudden collapse, No pulse. […] If you suspect someone is having cardiac arrest, it’s vital to respond appropriately and quickly. Call 911, give CPR and use an automated external defibrillator (AED) if one is available.

• #13 Ventricular Fibrillation (VFib): What It Is, Symptoms, Causes

  https://www.verywellhealth.com/vfib-7971381

  Ventricular fibrillation, called VFib or VF, is an extremely dangerous arrhythmia. It causes the heart’s lower chambers to twitch (fibrillate), preventing blood from being pumped out of the heart to the brain and other vital organs within the body. […] VFib results in cardiac arrest within seconds and death soon after if not treated with chest compressions and defibrillation (delivering an electric shock to restore the heart’s normal rhythm). […] The ventricles in VFib twitch erratically and are, therefore, unable to pump blood to the rest of the body, leading to sudden cardiac arrest (SCA) within seconds. […] Sudden cardiac arrest means the heart’s electrical system malfunctions, causing the heart to suddenly stop beating. If not treated immediately, death will occur within minutes. […] Symptoms and signs of sudden cardiac arrest include: Gasping for air or not breathing, Sudden collapse and loss of consciousness (passing out), No response to shouting or shaking, No pulse (heartbeat).

• #14 Ventricular Fibrillation: Causes and Treatments

  https://cpraedcourse.com/blog/ventricular-fibrillation/

  When V-Fib occurs, the heart’s chaotic rhythm prevents it from pumping blood effectively, resulting in no detectable pulse. […] Another critical symptom is difficulty breathing. During V-Fib, the body may stop breathing entirely or exhibit very shallow breathing. […] Individuals experiencing V-Fib will often be unresponsive to verbal or physical stimuli. This lack of responsiveness can be due to the brain not receiving enough oxygen, leading to a loss of consciousness. […] The sooner V-Fib is recognized and addressed, the better the chances of survival and recovery. When symptoms like sudden collapse or unresponsiveness are identified, bystanders can immediately begin performing CPR or use an Automated External Defibrillator (AED) if available. […] Ventricular fibrillation (V-Fib) can result from several factors that disrupt the heart’s normal rhythm. Here are the common causes:

• #15 Ventricular fibrillation – Wikipedia

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

  Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. […] This is followed by sudden cardiac death in the absence of treatment. […] Ventricular fibrillation is initially found in about 10% of people with cardiac arrest. […] Left untreated, ventricular fibrillation is rapidly fatal as the vital organs of the body, including the heart, are starved of oxygen. […] As a result, patients in this rhythm will not be conscious or responsive to stimuli. […] Prior to cardiac arrest, patients may complain of varying symptoms depending on the underlying cause. […] Patients may exhibit signs of agonal breathing, which to a layperson can look like normal spontaneous breathing, but is a sign of hypoperfusion of the brainstem. […] It has an appearance on electrocardiography of irregular electrical activity with no discernable pattern.

• #16 What is Ventricular Fibrillation (VFib)? – Symptoms, Causes

  https://en.taylanakgun.com/ventricular-fibrillation-vfib

  Ventricular fibrillation usually begins suddenly and causes immediate symptoms. The most noticeable signs are fainting, cessation of breathing, and an absent pulse. In some cases, patients may experience palpitations, dizziness, or a sense of unconsciousness shortly before VFib occurs. However, VFib is often only recognized when sudden cardiac arrest occurs. […] Symptoms of ventricular fibrillation include: Sudden loss of consciousness (fainting), Cessation of breathing, Absence of pulse, Chest pain, Severe palpitations, Sudden dizziness, Cold sweats, Rapid breathing, Extreme fatigue, Tightness in the chest, Nausea (especially with a heart attack), Pale or bluish skin. […] Ventricular fibrillation is the leading cause of sudden cardiac arrest and can be fatal without immediate treatment. Therefore, individuals at risk should closely monitor their heart health and seek medical attention quickly if symptoms appear. Early diagnosis, effective treatment, and preventive strategies can significantly reduce deaths caused by VFib.

• #17 Ventricular Fibrillation (VF) | UpBeat.org – powered by the Heart Rhythm Society

  https://upbeat.org/heart-rhythm-disorders/ventricular-fibrillation

  Sudden Cardiac Arrest (SCA) caused by ventricular fibrillation (VF) is the cause of half of all heart related deaths. VF is sudden, happens without warning, and stops the heart from working. In VF, the heartbeat is fast and chaotic, causing the lower heart chambers(ventricles) to lose their ability to pump effectively. This results in a drop in blood pressure and loss of consciousness. If normal rhythm is not restored it will result in death. […] Ventricular fibrillation (VF) is a fast and chaotic heart rhythm that occurs in the lower chambers or ventricles. In VF, the heart loses its ability to pump effectively. This results in a drop of blood pressure and loss of consciousness. If normal rhythm is not restored it will result in death. […] VF is sudden, happens without warning, and stops the heart from working.

• #18 Ventricular Fibrillation: Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/158712-overview

  VF can result from acute myocardial infarction (MI) or ischemia, or from myocardial scarring from an old infarct. […] The reentrant patterns break up into multiple smaller wavelets and the level of disorganization increases, with reentrant circuits producing high-frequency activation of cardiac muscle fibers. As the heart loses its ability to pump blood, myocardial ischemia worsens and a self-perpetuating vicious cycle ensues, leading to death if not corrected. […] On the electrocardiogram (ECG), VF manifests as a chaotically irregular pattern. This pattern is coarse initially but becomes finer as ventricular disorganization increases. As the ECG waveform flattens, the likelihood of successful defibrillation decreases. […] The chances of survival from an index ventricular fibrillation (VF) event depend on bystander cardiopulmonary resuscitation (CPR), rapid availability or arrival of personnel and apparatus for defibrillation and advanced life support, and transport to a hospital. Although patients with nontraumatic cardiac arrest are more likely to be successfully resuscitated from VF than from any other arrhythmia, success is highly time dependent. The probability of success generally declines at a rate of 2%-10% per minute.

• #19 Ventricular Fibrillation: Symptoms, Causes, Treatment

  https://www.webmd.com/heart-disease/what-is-ventricular-fibrillation

  Ventricular fibrillation symptoms include fainting, chest pain, pounding or fluttering heartbeat, dizziness, nausea, shortness of breath, and a fast or uneven pulse. […] When you lose consciousness because of VFib, you don’t respond when someone touches or speaks to you. You also have serious problems breathing (gasping for air or not breathing at all). […] VFib is fatal within about 3-5 minutes unless someone resuscitates you. […] When you have VFib, the electrical signals in your heart go haywire. The lower chambers of your heart (ventricles) quiver instead of pumping like they should. This keeps blood from being pumped out to the rest of your body. […] When you have ventricular fibrillation, the lower chambers of your heart beat over 300 times a minute.

• #20 Ventricular fibrillation – diagnosis & treatment | Hirslanden

  https://www.hirslanden.ch/en/corporate/disease-patterns/ventricular-fibrillation.html

  Ventricular fibrillation is a life-threatening cardiac arrhythmia that occurs suddenly and without warning. It causes the heart to beat extremely fast, which stops it from pumping blood correctly, meaning the body does not get enough oxygen. This causes unconsciousness within seconds and requires immediate intervention. Without medical assistance, the lack of oxygen to the brain can cause irreversible brain damage after five minutes, which, in the worst case, can be fatal. […] A person with ventricular fibrillation will suddenly collapse. This is usually accompanied by a rapid loss of consciousness within a few seconds. During the physical examination, the persons pulse can no longer be felt and normal breathing stops. These symptoms occur because the heart completely loses its ability to pump as a result of the chaotic and extremely fast heartbeat. As a result, the body is no longer supplied with sufficient oxygen-rich blood. Within a very short time, the lack of oxygen means that the brain can no longer function properly, resulting in an immediate loss of consciousness.

• #21 Ventricular Fibrillation – Heart and Blood Vessel Disorders – Merck Manual Consumer Version

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

  Ventricular fibrillation causes unconsciousness in seconds. If untreated, the person usually has a brief seizure and then becomes limp and unresponsive. People develop irreversible brain damage after about 5 minutes because oxygen no longer reaches the brain. Death soon follows. […] Ventricular fibrillation must be treated as an extreme emergency. Cardiopulmonary resuscitation (CPR) must be started as soon as possible. It must be followed by defibrillation (an electrical shock delivered to the chest), as soon as the defibrillator is available. Having automated external defibrillators (AEDs) available can thus be one of the most effective ways to save the lives of people who have cardiac arrest. […] When ventricular fibrillation occurs within a few hours of a heart attack in people who are not in shock and who do not have heart failure, prompt defibrillation restores normal rhythm in about 99% of people, and the prognosis is good. Shock and heart failure suggest severe damage to the ventricles. If the ventricles are severely damaged, even prompt cardioversion fails to resuscitate most people, and many people who are resuscitated die without regaining normal heart function.

• #22 Ventricular fibrillation – Wikipedia

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

  Coarse V-fib may be more responsive to defibrillation, while fine V-fib can mimic the appearance of asystole on a defibrillator or cardiac monitor set to a low gain. […] Rates of survival among those who are out of hospital when the arrhythmia is detected is about 17%, while for those in hospital it is about 46%.

• #23 Ventricular Fibrillation – Stanford Medicine Children’s Health

  https://www.stanfordchildrens.org/en/topic/default?id=ventricular-fibrillation-134-230

  Ventricular fibrillation is a dangerous type of arrhythmia, or irregular heartbeat. It affects your hearts ventricles. Ventricular fibrillation is an arrhythmia that starts in your ventricle. This occurs when the electrical signals that tell your heart muscle to pump cause your ventricles to quiver (fibrillate) instead. The quivering means that your blood is not pumping blood out to the rest of your body. In some people, V-fib may happen several times a day. This is called an electrical storm. […] Sustained V-fib can lead to sudden cardiac arrest (SCA) and/or sudden cardiac death (SCD). It needs immediate medical attention. […] Symptoms of V-fib include: Near fainting or transient dizziness, Fainting, Acute shortness of breath, Cardiac arrest. […] It is very important to make sure that people around you know what to do in an emergency. Someone should call 911 right away if you have any of the following symptoms of V-fib: Collapsing or fainting, Unresponsiveness, Loss of consciousness, Inability to breathe.

• #24 Ventricular Fibrillation | University Hospitals

  https://www.uhhospitals.org/health-information/health-and-wellness-library/article/diseases-and-conditions/ventricular-fibrillation

  Ventricular fibrillation (V-fib) is a dangerous type of arrhythmia, or irregular heartbeat. It affects your hearts ventricles. […] Symptoms of V-fib include: Near fainting or transient dizziness, Fainting, Acute shortness of breath, Cardiac arrest. […] Sustained V-fib can lead to sudden cardiac arrest (SCA) or sudden cardiac death (SCD). It needs immediate medical care. […] Complications include the possibility of repeat episodes of fainting or near fainting. There is poor blood circulation to all of your body’s vital organs during an episode of V-fib. After a prolonged V-fib episode or cardiac arrest, damage involving your neurological system, kidneys, and liver may occur. This damage may be permanent or reversible. V-fib can also be fatal. […] Ventricular fibrillation is life-threatening and needs immediate medical attention. […] CPR and defibrillation can restore your heart to its normal rhythm and may be lifesaving. […] Medicines and certain procedures after an episode of ventricular fibrillation can prevent or reduce the chances of another episode.

• #25 Ventricular Fibrillation – UF Health

  https://ufhealth.org/conditions-and-treatments/ventricular-fibrillation

  Ventricular fibrillation (VF) is a severely abnormal heart rhythm (arrhythmia) that is life threatening. […] A person who has a VF episode can suddenly collapse or become unconscious. This happens because the brain and muscles are not receiving blood from the heart. […] The following symptoms may occur within minutes to 1 hour before the collapse: Chest pain, Dizziness, Nausea, Rapid or irregular heartbeat (palpitations), Shortness of breath. […] VF will lead to death within a few minutes unless it is treated quickly and properly. Even then, long-term survival for people who live through a VF attack outside of the hospital is low. […] People who have survived VF may be in a coma or have long-term brain or other organ damage.

• #26 Ventricular Fibrillation: Symptoms, Causes, and Treatment

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

  When VF occurs, the two chambers in the lower portion of your heart arent able to pump hard enough to move blood through your body. These lower chambers are called ventricles. This makes your blood pressure drop quickly and keeps blood from traveling through your body. As a result, blood cant get to your vital organs. VF can be preceded by another arrhythmia called ventricular tachycardia (VT). […] Fainting or losing consciousness are the most common symptoms of VF. Earlier symptoms include: chest pain, dizziness, nausea, rapid, fluttering heartbeat, sudden shortness of breath. These early symptoms can occur 1 hour or less before fainting or loss of consciousness occurs. […] Getting a person to a hospital when VF occurs is vital. Death can occur within seconds after the condition starts. Other complications can include coma, loss of nerve function, and changes in neurological (mental) function due to a temporary loss or reduction of oxygen to the brain. […] Experiencing VF for a long time can also lead to kidney and liver problems. You may also be at risk of getting another VF episode or other heart problems in the future.

• #27 What Is Ventricular Fibrillation: Symptoms And Causes – First Aid Course Darwin

  https://firstaidcoursesdarwin.com.au/blog/what-is-ventricular-fibrillation/

  Ventricular fibrillation generally doesnt give much warning, but its main symptoms include fainting and loss of consciousness. […] Other symptoms may include: Chest pain, Pounding, fast, and irregular heartbeat, Sudden dizziness, Nausea or vomiting, Shortness of breath, Passing out (fainting). […] Sudden cardiac arrest is the worst complication that can result from ventricular fibrillation. The two main signs of sudden cardiac arrest are the person becoming unresponsive and struggling to breathe. […] The victim may not respond to touch or speaking, and they may gasp for air or not breathe at all. […] Ventricular fibrillation often begins with a very rapid heartbeat that changes the electrical impulses in the heart. […] Getting urgent treatment when ventricular fibrillation occurs is vital. Death can occur very soon after the condition starts. Other complications may lead to coma, loss of nerve function, and alteration in mental function. […] In such a situation, bystanders can perform CPR until a defibrillator is available to deliver a shock to restore the normal heartbeat. If not treated promptly, ventricular fibrillation may very quickly lead to sudden cardiac arrest and death.

• #28 Ventricular Fibrillation – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK537120/

  VF is an extremely dangerous rhythm significantly compromising cardiac output and ultimately leading to sudden cardiac death (SCD). […] VF has been identified in nearly 70% of cardiac arrest patients. Without treatment, the condition is fatal within minutes. […] The most common presentation for VF is sudden collapse from cardiac arrest leading to SCD. This results from improper ventricular contraction resulting in low cardiac output. […] Prognosis of VF depends on the time from onset to early intervention and defibrillation. Shorter delays are associated with survival rates as high as 50%. […] VF outside the hospital can be reversed as today there are defibrillators available in many places. But the success of reversal declines at a rate of 5-10% for every minute that is delayed. Even under ideal circumstances, 30-40% of patients survive but many also develop residual neurological deficits because of anoxia. Full recovery is rare.

• #29 Ventricular Fibrillation: Causes, Symptoms, and Treatment

  https://avicennacardiology.com/manhattan/ventricular-fibrillation

  Ventricular fibrillation (VF) is a life-threatening arrhythmia that disrupts the hearts ability to pump blood effectively. This dangerous heart rhythm originates in the hearts lower chambers (ventricles) and is a leading cause of sudden cardiac death. Without immediate treatment, VF progresses to cardiac arrest, making timely intervention critical for survival. […] Ventricular fibrillation symptoms are often abrupt, progressing rapidly to cardiac arrest. Key warning signs include: […] Symptoms of VF often begin suddenly and may include: […] Sudden collapse or loss of consciousness, indicative of cardiac arrest. […] When the heart stops pumping blood, immediate medical attention is necessary to prevent death or permanent damage to the brain and other organs. […] With immediate treatment, the survival rate for VF improves dramatically. Factors influencing prognosis include: […] Delayed or inadequate care may result in complications like brain damage due to low cardiac output or irreversible organ failure.

• #30 Ventricular Fibrillation: Causes, Symptoms, and Prevention

  https://longmoreclinic.org/ventricular-fibrillation-causes-symptoms-and-prevention/

  Ventricular fibrillation typically occurs suddenly and without warning. The primary symptoms include: […] In some cases, individuals may experience warning signs such as chest pain, dizziness, or palpitations shortly before the onset of VFib. However, these symptoms are often short-lived, and immediate medical attention is required. […] If you experience warning signs of VFib, such as chest pain, dizziness, or palpitations, seek medical attention immediately. […] The prognosis for VFib largely depends on the speed of treatment. Defibrillation within a few minutes of VFib onset significantly improves survival rates and outcomes. If left untreated for more than a few minutes, VFib can cause irreversible brain damage due to a lack of oxygen, and death is likely. […] Individuals with pre-existing heart conditions, such as a previous heart attack, heart failure, or cardiomyopathy, are at higher risk of experiencing VFib. Regular follow-up with a healthcare provider and proper management of these conditions can help reduce the risk of VFib.

• #31 Ventricular Fibrillation (VF) | UpBeat.org – powered by the Heart Rhythm Society

  https://upbeat.org/heart-rhythm-disorders/ventricular-fibrillation

  Bystander CPR can provide circulation and improve the survival rates in people with sudden cardiac death until defibrillation is performed to restore the normal rhythm. Patients at risk for ventricular fibrillation and survivors of sudden cardiac arrest can be treated with implantable cardiac defibrillators (ICDs) to provide life-saving prompt treatment.

• #32 Ventricular Fibrillation (VFib): Symptoms, Causes, and Treatments

  https://resources.healthgrades.com/right-care/heart-health/ventricular-fibrillation

  Ventricular fibrillation (VFib) is a heart arrhythmia. It affects the ventricles — the lower chambers of the heart. VFib leads to sudden collapse and cardiac arrest. Death can occur within minutes. […] The most common symptom of VFib is sudden collapse and cardiac arrest. Signs of cardiac arrest include: gasping or not breathing at all, experiencing a loss of responsiveness or consciousness, having no pulse. […] VFib is a medical emergency. It can lead to sudden cardiac death within minutes. […] VFib can be fatal within minutes. Treatment requires immediate CPR and defibrillation. The longer it takes to begin these treatments, the less likely survival becomes.

• #33 Ventricular Fibrillation – MD Searchlight

  https://mdsearchlight.com/heart-health/ventricular-fibrillation/

  The prognosis, or likely course, of Ventricular Fibrillation (VF, a severe heart rhythm problem) depends on the speed of intervention and use of a defibrillator. Early intervention can lead to survival rates as high as 50%. For patients with ST-elevation MI (a type of heart attack), having VF in less than 24 hours increases the risk of death compared to those who experience VF after 24 hours. […] The prognosis for Ventricular Fibrillation (VF) depends on the speed of intervention and use of a defibrillator. Early intervention can lead to survival rates as high as 50%. However, the chance of successfully reversing VF drops by 5-10% for every minute that passes. Even in an ideal scenario, 30-40% of patients would survive, but many may develop residual neurological issues due to lack of oxygen. Complete recovery is uncommon.

• #34 Ventricular Fibrillation (V-fib): Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/heart/arrhythmias/ventricular-fibrillation-V-fib

  Ventricular fibrillation can occur suddenly and without warning. A person experiencing ventricular fibrillation symptoms can lose consciousness, collapse, become unresponsive, stop breathing and go into sudden cardiac death if they dont receive immediate appropriate medical attention. […] Before V-fib, a person may display signs including: Shortness of breath, Chest pain, Dizziness or lightheadedness, Other types of arrhythmias, Nausea.

• #35 Ventricular Fibrillation (V-fib) | Heart & Vascular | Loyola Medicine

  https://www.loyolamedicine.org/services/heart-and-vascular/heart-vascular-conditions/arrhythmias/v-fib

  V-fib can lead to sudden cardiac arrest, which requires urgent medical attention. Signs of cardiac arrest include: […] Early signs and symptoms include: Pain in the chest, Tachycardia (rapid heartbeat), Nausea, Dizziness, Breathlessness, Loss of consciousness.

• #36 Ventricular Fibrillation: Causes and Treatments

  https://cpraedcourse.com/blog/ventricular-fibrillation/

  Ventricular fibrillation (V-Fib) is a serious heart condition in which the heart’s lower chambers shake wildly instead of pumping blood properly. This can prevent blood from reaching the rest of the body and lead to a sudden heart attack. Understanding V-Fib is important because it can be life-threatening if not treated right away. […] The symptoms of V-Fib can be sudden and severe, as the heart’s ability to pump blood is disrupted. Understanding what ventricular fibrillation is is crucial for recognizing its symptoms and taking appropriate action to treat the condition promptly. Here’s a clear look at the symptoms of V-Fib: […] One of the most alarming symptoms of ventricular fibrillation (V-Fib) is a sudden collapse or loss of consciousness. This happens because the heart is no longer effectively pumping blood to the brain and other vital organs.

• #37 Ventricular Arrhythmia: Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21854-ventricular-arrhythmia

  Ventricular fibrillation typically causes a person to collapse or pass out. Sometimes, there are no warning signs before this takes place. If symptoms happen, they tend to appear just minutes before a person passes out. Symptoms often include: […] Ventricular fibrillation often shortened to v-fib happens when the lower chambers of the heart quiver or twitch rather than expand and contract. Because the ventricles dont fully expand and contract, blood doesnt get pumped through them. This causes your heart to stop, sending you into sudden cardiac arrest, and lack of blood flow to your brain causes you to pass out within seconds. If blood flow isnt restarted within a few minutes, this condition is deadly.

• #38 Ventricular Fibrillation: Diagnosis & Treatment

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

  Ventricular fibrillation (VF) is a life-threatening emergency that requires immediate medical attention. Without treatment, it can cause unconsciousness and death within minutes. […] Diagnosing ventricular fibrillation (also called VF or v-fib) typically happens after emergency treatment because ventricular fibrillation can strike suddenly and without warning. Since VF is fatal without immediate intervention, providers focus first on terminating or controlling the arrhythmia and restoring the hearts function before diagnosing the source or etiology of VF. […] Once heart function is restored, doctors may prescribe an anti-arrhythmic medication to help regulate your heartbeat and prevent future ventricular fibrillation symptoms or episodes. […] Without prompt treatment, ventricular fibrillation is life-threatening within a few minutes. Immediate emergency treatment, like CPR and defibrillation, followed by expert care can increase the chances of survival. […] It’s highly unlikely that ventricular fibrillation will resolve on its own. Without immediate medical intervention, the chances of the heart returning to a normal rhythm naturally are very low, and the condition is life-threatening.

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