Catheter ablation

About: Catheter ablation is a research topic. Over the lifetime, 16515 publications have been published within this topic receiving 426033 citations.

Spontaneous Initiation of Atrial Fibrillation by Ectopic Beats Originating in the Pulmonary Veins

Abstract: Background Atrial fibrillation, the most common sustained cardiac arrhythmia and a major cause of stroke, results from simultaneous reentrant wavelets. Its spontaneous initiation has not been studied. Methods We studied 45 patients with frequent episodes of atrial fibrillation (mean [±SD] duration, 344±326 minutes per 24 hours) refractory to drug therapy. The spontaneous initiation of atrial fibrillation was mapped with the use of multielectrode catheters designed to record the earliest electrical activity preceding the onset of atrial fibrillation and associated atrial ectopic beats. The accuracy of the mapping was confirmed by the abrupt disappearance of triggering atrial ectopic beats after ablation with local radio-frequency energy. Results A single point of origin of atrial ectopic beats was identified in 29 patients, two points of origin were identified in 9 patients, and three or four points of origin were identified in 7 patients, for a total of 69 ectopic foci. Three foci were in the right atrium...

A comparison of rate control and rhythm control in patients with atrial fibrillation.

Abstract: Background There are two approaches to the treatment of atrial fibrillation: one is cardioversion and treatment with antiarrhythmic drugs to maintain sinus rhythm, and the other is the use of rate-controlling drugs, allowing atrial fibrillation to persist. In both approaches, the use of anticoagulant drugs is recommended. Methods We conducted a randomized, multicenter comparison of these two treatment strategies in patients with atrial fibrillation and a high risk of stroke or death. The primary end point was overall mortality. Results A total of 4060 patients (mean [+/-SD] age, 69.7+/-9.0 years) were enrolled in the study; 70.8 percent had a history of hypertension, and 38.2 percent had coronary artery disease. Of the 3311 patients with echocardiograms, the left atrium was enlarged in 64.7 percent and left ventricular function was depressed in 26.0 percent. There were 356 deaths among the patients assigned to rhythm-control therapy and 310 deaths among those assigned to rate-control therapy (mortality at five years, 23.8 percent and 21.3 percent, respectively; hazard ratio, 1.15 [95 percent confidence interval, 0.99 to 1.34]; P=0.08). More patients in the rhythm-control group than in the rate-control group were hospitalized, and there were more adverse drug effects in the rhythm-control group as well. In both groups, the majority of strokes occurred after warfarin had been stopped or when the international normalized ratio was subtherapeutic. Conclusions Management of atrial fibrillation with the rhythm-control strategy offers no survival advantage over the rate-control strategy, and there are potential advantages, such as a lower risk of adverse drug effects, with the rate-control strategy. Anticoagulation should be continued in this group of high-risk patients.

2012 focused update of the ESC Guidelines for the management of atrial fibrillation: An update of the 2010 ESC Guidelines for the management of atrial fibrillation * Developed with the special contribution of the European Heart Rhythm Association

Abstract: 2012 focused update of the ESC Guidelines for the management of atrial fibrillation : an update of the 2010 ESC Guidelines for the management of atrial fibrillation: developed with the special contribution of the European Heart Rhythm Association

2012 focused update of the ESC Guidelines for the management of atrial fibrillation

Abstract: ACCF : American College of Cardiology Foundation ACCP : American College of Chest Physicians ACS : acute coronary syndrome ACT : Atrial arrhythmia Conversion Trial ADONIS : American–Australian–African trial with DronedarONe In atrial fibrillation or flutter for the maintenance of Sinus rhythm AF : atrial fibrillation AHA : American Heart Association ANDROMEDA : ANtiarrhythmic trial with DROnedarone in Moderate-to-severe congestive heart failure Evaluating morbidity DecreAse APHRS : Asia Pacific Heart Rhythm Society aPTT : activated partial thromboplastin time ARB : angiotensin-receptor blocker ARISTOTLE : Apixaban for Reduction In STroke and Other ThromboemboLic Events in atrial fibrillation ATHENA : A placebo-controlled, double-blind, parallel arm Trial to assess the efficacy of dronedarone 400 mg b.i.d. for the prevention of cardiovascular Hospitalization or death from any cause in patiENts with Atrial fibrillation/atrial flutter ATRIA : AnTicoagulation and Risk factors In Atrial fibrillation AVERROES : Apixaban VErsus acetylsalicylic acid (ASA) to Reduce the Rate Of Embolic Stroke in atrial fibrillation patients who have failed or are unsuitable for vitamin K antagonist treatment AVRO : A prospective, randomized, double-blind, Active-controlled, superiority study of Vernakalant vs. amiodarone in Recent Onset atrial fibrillation b.i.d : bis in die (twice daily) b.p.m. : beats per minute CABANA : Catheter ABlation vs . ANtiarrhythmic drug therapy for Atrial fibrillation CABG : coronary artery bypass graft CAP : Continued Access to Protect AF CHA2DS2-VASc : Congestive heart failure or left ventricular dysfunction Hypertension, Age ≥75 (doubled), Diabetes, Stroke (doubled)-Vascular disease, Age 65–74, Sex category (female) CHADS2 : Congestive heart failure, Hypertension, Age ≥75, Diabetes, Stroke (doubled) CI : confidence interval CRAFT : Controlled Randomized Atrial Fibrillation Trial CrCl : creatinine clearance DAFNE : Dronedarone Atrial FibrillatioN study after Electrical cardioversion DIONYSOS : Randomized Double blind trIal to evaluate efficacy and safety of drOnedarone (400 mg b.i.d.) vs . amiodaroNe (600 mg q.d. for 28 daYS, then 200 mg qd thereafter) for at least 6 mOnths for the maintenance of Sinus rhythm in patients with atrial fibrillation EAST : Early treatment of Atrial fibrillation for Stroke prevention Trial EHRA : European Heart Rhythm Association ECG : electrocardiogram EMA : European Medicines Agency ERATO : Efficacy and safety of dRonedArone for The cOntrol of ventricular rate during atrial fibrillation EURIDIS : EURopean trial In atrial fibrillation or flutter patients receiving Dronedarone for the maIntenance of Sinus rhythm FAST : atrial Fibrillation catheter Ablation vs . Surgical ablation Treatment FDA : Food and Drug Administration Flec-SL : Flecainide Short-Long trial HAS-BLED : Hypertension, Abnormal renal/liver function, Stroke, Bleeding history or predisposition, Labile INR, Elderly, Drugs/alcohol concomitantly HF-PEF : heart failure with preserved ejection fraction HF-REF : heart failure with reduced ejection fraction HR : hazard ratio HRS : Heart Rhythm Society ICH : intracranial haemorrhage INR : international normalized ratio i.v. : intravenous J-RHYTHM : Japanese RHYTHM management trial for atrial fibrillation LAA : left atrial appendage LoE : level of evidence LVEF : left ventricular ejection fraction MANTRA-PAF : Medical ANtiarrhythmic Treatment or Radiofrequency Ablation in Paroxysmal Atrial Fibrillation NICE : National Institute for Health and Clinical Excellence NOAC : novel oral anticoagulant NSAID : non-steroidal anti-inflammatory drug NYHA : New York Heart Association OAC : oral anticoagulant or oral anticoagulation o.d. : omni die (every day) PALLAS : Permanent Atrial fibriLLAtion outcome Study using dronedarone on top of standard therapy PCI : percutaneous coronary intervention PREVAIL : Prospective Randomized EVAluation of the LAA closure device In patients with atrial fibrillation v s. Long-term warfarin therapy PROTECT AF : WATCHMAN LAA system for embolic PROTECTion in patients with Atrial Fibrillation PT : prothrombin time RAAFT : Radio frequency Ablation Atrial Fibrillation Trial RE-LY : Randomized Evaluation of Long-term anticoagulant therapY with dabigatran etexilate ROCKET-AF : Rivaroxaban Once daily oral direct factor Xa inhibition Compared with vitamin K antagonism for prevention of stroke and Embolism Trial in atrial fibrillation RRR : relative risk reduction TE : thromboembolism TIA : transient ischaemic attack t.i.d. : ter in die (three times daily) TOE : transoesophageal echocardiogram TTR : time in therapeutic range VKA : vitamin K antagonist Guidelines summarize and evaluate all currently available evidence on a particular issue with the aim of assisting physicians in selecting the best management strategy for an individual patient suffering from a given condition, taking into account the impact on …

2015 ESC Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death: The Task Force for the Management of Patients with Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death of the European Society of Cardiology (ESC). Endorsed by: Association for European Paediatric and Congenital Cardiology (AEPC)

Abstract: ACC : American College of Cardiology ACE : angiotensin-converting enzyme ACS : acute coronary syndrome AF : atrial fibrillation AGNES : Arrhythmia Genetics in the Netherlands AHA : American Heart Association AMIOVIRT : AMIOdarone Versus Implantable cardioverter-defibrillator: