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Ventricular Fibrillation Resulting from Synchronized Internal Atrial Defibrillation in a Patient with Ventricular Preexcitation
Author(s) -
BAROLD HELEN S.,
WHARTON J. MARCUS
Publication year - 1997
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.1997.tb00809.x
Subject(s) - medicine , defibrillation , cardiology , coronary sinus , shock (circulatory) , proarrhythmia , atrial fibrillation , ventricular fibrillation , sinus rhythm
VF After Synchronized Internal Atrial Defibrillation. This case describes ventricular proarrhythmia as a result of a synchronized internal atrial defibrillation shock in a 29‐year‐old man with Ebstein's anomaly referred for radiofrequency ablation of a right posterior accessory pathway. During the electrophysiologic study, atrial fibrillation was induced and 3/3 msec shocks of various strengths were delivered between two decapolar defibrillation catheters in the coronary sinus and right atrial appendage. A 2.0‐J biphasic shock synchronized to an R wave after a short‐long‐short ventricular cycle length pattern with a preshock coupling interval of 245 msec induced ventricular fibrillation, which was externally defibrillated with 200 J. This observation has implications for the development of implantable atrial defibrillators.