January CT, Wann LS, Alpert JS, Calkins H, Cigarroa JE, Cleveland JC Jr, Conti JB, Ellinor PT, Ezekowitz MD, Field ME, Murray KT, Sacco RL, Stevenson WG, Tchou PJ, Tracy CM, Yancy CW, ACC/AHA Task Force Members 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society. Electrical remodeling of the human atrium: similar effects in patients with chronic atrial fibrillation and atrial flutter. Atrial remodeling and atrial fibrillation: mechanisms and implications. Electroanatomic remodeling of the left atrium in paroxysmal and persistent atrial fibrillation patients without structural heart disease. These findings may impact the prescription of antiarrhythmic and AV-nodal blocking drugs.Ītrial fibrillation Atrial flutter First degree atrioventricular block HV interval Intra-atrial conduction delay.īexton RS, Camm AJ. RIAC delay is a common underlying cause of AVB1 in patients with AF and AFlu. Yet, a number of complications are observed after orthotropic heart transplantation, including atrial and ventricular arrhythmias. AV nodal conduction delay was more common in AFlu patients compared with AF patients. Abstract Orthotropic heart transplantation remains the most effective therapy for patients with end-stage heart failure, with a median survival of 13 years. Rapid atrial pacing: a useful technique during slow pathway ablation. AVB1 was due to RIAC delay in 42 of 67 patients (63%) in the AF-group, in 37 of 96 patients (39%) in the AFlu-group, and in 17 of 36 patients (47%) in the AF/AFlu group, respectively. One method to reduce heart block risk during catheter ablation of atrioventricular nodal reentrant tachycardia. The prevalence of AVB1 is higher in patients with AFlu (41%) and AF (21%) and patients with both arrhythmias (30%) as compared with a reference group (8%) of patients with AVNRT/AVRT. RIAC delay was defined as a prolonged PR interval > 200 ms with normal AH and HV intervals. AH-, HV-, PR-interval, and P-wave duration were measured on the 12-lead ECG and the intracardiac electrograms in sinus rhythm.
We included 1067 consecutive patients (33% female, age 63 ± 13 years) referred for catheter ablation of AF (AF-group) (453 patients), AF and AFlu (136 patients), AFlu (292 patients), and AVNRT/AVRT (186 patients). The aim of the study was to assess the prevalence of AVB1 due to RIAC delay (AVB1 with normal AH and HV) in patients with atrial fibrillation (AF) and atrial flutter (AFlu). PR interval prolongation > 200 ms resulting in the diagnosis of first-degree atrioventricular block (AVB1) is caused by a delay in the AV nodal/His conduction and/or the right intra-atrial conduction (RIAC).
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