• Ventricular fibrillation (VF) is a severely abnormal heart rhythm ( arrhythmia ) that is life threatening. (medlineplus.gov)
  • Ventricular fibrillation (VF) is a life-threatening cardiac arrhythmia in which the coordinated contraction of the ventricular myocardium is replaced by high-frequency, disorganized excitation, resulting in [the effective] failure of the heart to pump blood. (medscape.com)
  • Although Torsades de Pointes (TdP) is a rare ventricular arrhythmia , it can degenerate into ventricular fibrillation , leading to death without rapid medical intervention. (wikidoc.org)
  • Atrial fibrillation (AF or afib) is a type of heart rhythm disorder, or arrhythmia . (everydayhealth.com)
  • hence, reliable detection of initial arrhythmia episodes is crucial to provide timely treatment. (physionet.org)
  • Although people with this condition may have more episodes of arrhythmia, the episodes usually stop on their own, without treatment. (diseasesdic.com)
  • Although people with LQT3 have fewer episodes of arrhythmia, these episodes are more likely to be fatal. (diseasesdic.com)
  • Atrial fibrillation, or AFib, is the most common type of arrhythmia , in which the hearts two upper chambers do not beat in sync with the two lower chambers. (healthyheartworld.com)
  • Ventricular fibrillation may occur as a complication during RF catheter ablation of papillary muscle ventricular arrhythmias even if the clinical arrhythmia is limited to PVCs. (umn.edu)
  • However, if it persists, it may lead to a life-threatening arrhythmia called ventricular fibrillation. (cardiachealth.org)
  • The condition is characterized by abnormal heart rhythms (arrhythmias) on ECG and a predisposition to developing ventricular fibrillation , a particularly dangerous type of arrhythmia. (osmosis.org)
  • or the arrhythmia may degenerate into ventricular fibrillation , resulting in sudden death. (medscape.com)
  • Torsades de pointes is defined as the presence of polymorphic ventricular tachycardia with a prolonged QT segment on EKG . (wikidoc.org)
  • Polymorphic ventricular tachycardia is distinguished from torsades de pointes by the absence of prolongation of the QT segment. (wikidoc.org)
  • Intravenous administration of magnesium (Mg 2+ ) is effective for polymorphic ventricular tachycardia via homogenization of transmural ventricular repolarization. (jle.com)
  • Brugada ECG pattern presented with polymorphic ventricular tachycardia/ventricular fibrillation episodes triggered by sinus bradycardia due to autonomic dysfunction in patient with Guillain Barre Syndrome. (escardio.org)
  • Preventing ventricular arrhythmias and sudden cardiac death in adults with repaired tetralogy of Fallot: a never-ending story? (revespcardiol.org)
  • In particular, ICMs may have an emerging role in the management of patients with atrial fibrillation and in those at risk of ventricular arrhythmias. (medscape.com)
  • We aimed to identify right ventricular (RV) electrophysiological parameters potentially associated with a higher risk of ventricular arrhythmias in patients with rTOF. (revespcardiol.org)
  • 2017 AHA/ACC/HRS Guideline for management of patients with ventricular arrhythmias and the prevention of sudden cardiac death: a report of the American College of Cardiology/American Heart Association Task Force on clinical practice guidelines and the Heart Rhythm Society [published correction appears in J Am Coll Cardiol. (medlineplus.gov)
  • For related topics, see Ventricular Fibrillation in Emergency Medicine , Sudden Cardiac Death , Hypertrophic Cardiomyopathy , and Pediatric Ventricular Fibrillation . (medscape.com)
  • Ventricular fibrillation causes more than 300,000 sudden deaths each year in the USA alone. (nih.gov)
  • To date, the only treatment that has proven effective in treating ventricular tachycardia and fibrillation and preventing sudden death in patients with Brugada syndrome is implantation of an automatic implantable cardiac defibrillator (ICD). (medscape.com)
  • The patient may experience nausea , shortness of breath , dizziness , chest pain , and possibly ventricular fibrillation and sudden cardiac death . (wikidoc.org)
  • Brugada syndrome is named after two Spanish brothers, Pedro and Josep Brugada , who recognized a specific pattern of ventricular fibrillation on the electrocardiogram or ECG, of previously healthy individuals who had a sudden death! (osmosis.org)
  • this also correlates with when the majority of arrhythmias and sudden death episodes occur. (medscape.com)
  • Changes in the normal ECG pattern occur in numerous cardiac abnormalities, including cardiac rhythm disturbances (such as atrial fibrillation and ventricular tachycardia), inadequate coronary artery blood flow (such as myocardial ischemia and myocardial infarction), and electrolyte disturbances (such as hypokalemia and hyperkalemia). (wikipedia.org)
  • Effective for services performed on or after January 24, 1986 through July 1, 1991, the implantation of an automatic defibrillator (ICD-9-CM codes 37.94-37.96 or CPT code 33246) is a covered service only when used as a treatment of last resort for patients who have had a documented episode of life-threatening ventricular tachyarrhythmia or cardiac arrest not associated with myocardial infarction. (cms.gov)
  • Effective for services performed on or after July 1, 1991, the implantation of an automatic defibrillator is a covered service for patients who have had a documented episode of life-threatening ventricular tachyarrhythmia or cardiac arrest not associated with myocardial infarction. (cms.gov)
  • Was a difference between late and early new-onset of atrial fibrillation in non st-elevation myocardial infarction? (escardio.org)
  • Apical 4-chamber views show a breach in the interventricular septum and free communication between ventricles through a large apical septum ventricular septal defect in a patient who recently had an anterior myocardial infarction. (medscape.com)
  • For other discussions on myocardial infarction, see Myocardial Infarction, Right Ventricular Infarction, Imaging of Acute Myocardial Infarcts, and Use of Cardiac Markers in the Emergency Department. (medscape.com)
  • Alteplase (injection) is a thrombolytic agent that is FDA approved for the treatment of acute myocardial infarction (AMI) in adults for the improvement of ventricular function following AMI , the reduction of the incidence of congestive heart failure , and the reduction of mortality associated with AMI . (wikidoc.org)
  • However, those that result in hypotension, increase myocardial oxygen requirements, and/or predispose the patient to develop additional malignant ventricular arrhythmias should be aggressively monitored and treated. (medscape.com)
  • In atrial fibrillation, many different electrical impulses happen all at once in your atria, which causes very fast and disorganized electrical activity. (everydayhealth.com)
  • Ventricular fibrillation is a potentially fatal, uncoordinated series of very rapid, ineffective contractions of the ventricles (lower chambers of the heart) caused by many chaotic electrical impulses. (msdmanuals.com)
  • Atrial fibrillation is a rapid heart rate caused by chaotic, irregular electrical impulses in the upper chambers of the heart (atria). (ahdubai.com)
  • Ventricular fibrillation occurs when rapid, chaotic electrical impulses cause the lower heart chambers (ventricles) to quiver instead of pumping necessary blood to the body. (ahdubai.com)
  • In approximately 5-12% of these cases, there are no demonstrable cardiac or non-cardiac causes to account for the episode, which is therefore classified as idiopathic ventricular fibrillation (IVF). (nih.gov)
  • Unlike certain abnormal heart rhythms , such as ventricular fibrillation, that originate in the heart's lower chambers, SVT usually isn't dangerous. (sahealth.com)
  • Episode and duration F 1 scores (range 0-100) exceeded 70 for all 14 rhythms (including noise) that were evaluated. (nih.gov)
  • F 1 scores for 11 rhythms exceeded 80, 7 exceeded 90, and 5 including atrial fibrillation/flutter, ventricular tachycardia, ventricular bigeminy, ventricular trigeminy, and third-degree heart block exceeded 95. (nih.gov)
  • A 24-year-old male presents to the emergency department after a witnessed syncopal episode. (osmosis.org)
  • Perform echocardiography and/or MRI, primarily to exclude arrhythmogenic right ventricular cardiomyopathy, as well as to assess for other potential causes of arrhythmias. (medscape.com)
  • In addition to these broad categories, right ventricular (RV) infarction and cardiogenic shock are other possible complications of acute MI. (medscape.com)
  • An understanding of the pathophysiology has led to development of treatment modalities like pacing , isoproterenol and drugs like magnesium and beta blockers .If the episode of does not terminate on its own and degenerates into ventricular fibrillation, cardioversion is required. (wikidoc.org)
  • Resuscitation efforts were performed during which the patient suffered two episodes of ventricular fibrillation followed by asystole. (fluoridealert.org)
  • By implementing dedicated algorithms and sensing parameters similar to those of implanted cardioverter defibrillators (ICDs) and pacemakers, the new-generation ICMs are also able to automatically detect (i.e. without any active intervention by the patient) any kind of arrhythmic event (Fig. 1): from bradycardia to asystole, and from atrial fibrillation (AF) to ventricular tachycardia. (medscape.com)
  • Ventricular fibrillation (VF) occurs in a variety of clinical situations but is most often associated with coronary artery disease (CAD). (medscape.com)
  • Torsades de Pointes Ventricular Tachycardia Torsades de pointes ventricular tachycardia is a specific type of ventricular tachycardia that occurs in people who have a particular disorder of the heart's electrical activity called a long. (msdmanuals.com)
  • Torsades de pointes (French for 'twisting of the points), the most dangerous type of ventricular tachycardia, occurs more often in people with LQT1. (diseasesdic.com)
  • Familial or inherited conditions with a high risk or life-threatening ventricular tachyarrythmias such as long QT syndrome or hypertrophic cardiomyopathy. (cms.gov)
  • Dr. Kusumoto says atrial fibrillation decreases the heart's blood pumping efficiency and puts a patient at higher risk for blood clots, heart failure, and stroke. (mayoclinic.org)
  • Ventricular fibrillation , sometimes called v-fib, means the heart's muscle fibers start quivering because they're not contracting at the same time. (osmosis.org)
  • Left ventricular activation mapping revealed a focal mechanism of the PVCs with the earliest activation on the anterior papillary muscle (APM). (umn.edu)
  • Irrigated radiofrequency (RF) current delivered at that site induced a cluster of non-sustained ventricular tachycardia episodes with the same QRS morphology as the PVCs, followed by ventricular fibrillation (VF). (umn.edu)
  • Supraventricular tachycardia causes episodes of a pounding heartbeat that start and stop suddenly. (mayoclinic.org)
  • Supraventricular tachycardia causes episodes of a pounding heartbeat (palpitations) that begin and end abruptly. (mayoclinic.org)
  • Each state is associated with statistical information on episode duration and heartbeat characteristics. (lu.se)
  • Fibrillation refers to a rapid, irregular heartbeat . (everydayhealth.com)
  • I became convinced of the importance of coronary spasm in 1972, when a patient with recurrent episodes of chest pain, ST segment elevation, and ventricular fibrillation was referred to me. (acc.org)
  • It is characterized by a constantly changing rhythm amplitude which comes from the ventricular depolarizing waves constantly shifting its axis. (wikidoc.org)
  • The rationale behind early repair in these instances is to treat severe MR before pathological changes have occurred thus preserving patients in a state of normal ventricular and atrial chambers, normal rhythm (i.e. no persistent or permanent disturbances) and good long-term valve function, the aim being to ultimately ensure a survival rate and quality of life identical to the matched population. (escardio.org)
  • Ventricular ectopic beat classification sensitivity and positive predictive value were 89.4% and 97.8%, respectively. (nih.gov)
  • We used logistic regression modeling to identify those variables associated with an increased risk of clinical or induced ventricular tachycardia (VT), or clinical VT exclusively. (revespcardiol.org)
  • This includes the expected initiation of our first clinical trial of etripamil in patients with atrial fibrillation and rapid ventricular rate. (newswire.ca)
  • Ventricular fibrillation causes unconsciousness in seconds, and if the disorder is not rapidly treated, death follows. (msdmanuals.com)
  • On an electrocardiogram , Brugada syndrome typically has ST elevations (which are often a sign of ventricular strain), as well as a right bundle branch block , which indicates that the ventricles aren't depolarizing normally. (osmosis.org)
  • Finally, the ability of new-generation ICMs to automatically record arrhythmic episodes suggests that these devices could also be used to study asymptomatic arrhythmias, and thus could be proposed for the long-term evaluation of the total (symptomatic and asymptomatic) arrhythmic burden in patients at risk of arrhythmic events. (medscape.com)
  • Risk stratification of ventricular arrhythmias in patients with repaired tetralogy of Fallot (rTOF) remains unresolved. (revespcardiol.org)
  • Thirteen J-wave syndrome patients (Brugada and early repolarization [ER] syndromes), with documented episodes of ventricular fibrillation (VF), and 13 ER pattern (ERP) or Brugada type ECG patients were enrolled (25 males, mean age 48 ± 15 years). (jle.com)
  • In this group of patients, the risk of serious arrhythmias, such as ventricular fibrillation, is greatest in the first hour and declines thereafter. (medscape.com)
  • Despite the name, there are patients who survive such episodes. (cardiachealth.org)
  • In short, the Brugada syndrome is an abnormality in the electrical system of the heart that predisposes patients to develop episodes of ventricular tachycardia and loss of consciousness. (medscape.com)
  • a decreased left ventricular ejection fraction was still apparent 6 weeks later. (medpagetoday.com)
  • Other risk factors include electrolyte abnormalities , heart failure , left ventricular hypertrophy , female gender or renal and liver failure . (wikidoc.org)
  • Mitral valve repair is often recommended in severe mitral regurgitation however absence of symptoms and episodes of atrial fibrillation, a preserved left ventricular function and normal pulmonary artery pressure either warrant early repair or watchful waiting depending on 1) the patient's characteristics, 2) surgical risk, 3) likelihood of an effective and durable repair and 4) local expertise. (escardio.org)
  • Left ventricular dysfunction/dilatation (4-5), PHT (6) and AF (7) are each a predictor of poor outcome under medical management and are triggers to prompt surgery without further delay, even if actual repair is unlikely. (escardio.org)
  • Left ventricular developed pressure, creatine kinase, and infarct size were measured. (asahq.org)
  • Creatine kinase and infarct sizes were significantly reduced and left ventricular developed pressure was improved with APC in the young adult and middle-aged groups but not the aged group. (asahq.org)
  • There is left ventricular hypertrophy, so there is more oxygen demand. (rimikri.com)
  • Complications of MI include arrhythmic, mechanical, and inflammatory (early pericarditis and post-MI syndrome) sequelae, as well as left ventricular mural thrombus (LVMT). (medscape.com)
  • However, in some cases, people with the condition may experience episodes of palpitations, fatigue, and shortness of breath . (osmosis.org)
  • Fibrillation is an uncontrolled twitching or quivering of muscle fibers (fibrils). (medlineplus.gov)
  • The mechanisms responsible for the maintenance and termination of ventricular fibrillation (VF) are poorly understood. (revespcardiol.org)
  • Supported by compelling results from the Phase 2 NODE-1 trial, we believe etripamil has the potential to alter the PSVT treatment paradigm as the first self-administered therapy for the rapid termination of supraventricular tachycardia (SVT) episodes wherever and whenever they occur. (newswire.ca)
  • On the other hand, when your heart beats faster than normal for no apparent reason-when you're at rest or even while you're sleeping-it may be an episode of supraventricular tachycardia (SVT). (sahealth.com)
  • Device diagnostics stored daily information on AF duration and ventricular rate (VR) during AF. (bmj.com)