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Limited Benefit of Septal Pre‐Excitation in Pace Prevention of Atrial Fibrillation by MATTIAS DUYTSCHAEVER; VIDA FIRSOVAITE; RUDY COLPAERT; MAURITS ALLESSIE; RENE TAVERNIER is a Medicine article available to read on EtoBox.

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__Background:__ Pre‐excitation of the intra‐atrial septum (IAS) by pacing at the ostium of the coronary sinus (CSO) can prevent atrial fibrillation (AF) in case of single atrial premature beats (APBs). We investigated whether pre‐excitation of IAS, either by pacing at CSO or at the right ventricle in the presence of retrograde conduction (RV), can prevent atrial tachyarrhythmia triggered by single __and__ multiple APBs. AF vulnerability was compared to pacing at the right atrium (RA) and sinus rhythm (SR). __Methods:__ Seventeen patients, age 52 ± 21 years, who exhibited retrograde VA conduction and reproducible induction of atrial tachyarrhythmia during an electrophysiological procedure, were studied. Both during SR and pacing (S1‐S1:600 ms) at RA, CSO, and right ventricle (RV), single (A1‐S2:200 ms) and multiple premature stimuli (A1‐S2‐S3‐S4:200–180–180 ms) were delivered at RA (4 × diastolic threshold). __Results:__ During pacing at RA, single and multiple APBs invariably induced runs of atrial tachyarrhythmia (mean duration 34 ± 67 sec and 37 ± 69 sec, range 1 sec to 20 min). During preventive pacing at CSO and RV, single APBs (A1‐S2:200 ms) did not induce atrial arrhythmia (0

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Author

MATTIAS DUYTSCHAEVER; VIDA FIRSOVAITE; RUDY COLPAERT; MAURITS ALLESSIE; RENE TAVERNIER

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Futura Publishing Company, Inc; Blackwell Publishing Inc.; Wiley (ISSN 1540-8167)

Published

2005

Language

EN

Field

Medicine (Health Sciences)