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Updated: May 20, 2026

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
Published on: July 29, 2011
Wolff-Parkinson-White syndrome concomitant with idiopathic ventricular fibrillation associated with inferior early
Naohiko Takahashi1, Tetsuji Shinohara, Masahide Hara
1Department of Laboratory Examination and Diagnostics, Faculty of Medicine, Oita University, Japan. takanao@oita-u.ac.jp
Abstract:
We encountered a 39-year-old man with documented ventricular fibrillation (VF). His ECGs showed intermittent Wolff-Parkinson-White (WPW) syndrome pattern. During electrophysiological study, no ventricular preexcitation was observed. An accessory pathway located at the posterior mitral annulus was identified, and successfully eliminated by radiofrequency catheter ablation. VF was not induced. His ECGs in the absence of delta waves demonstrated early repolarization in the inferior leads. This case raises the possibility that patients with manifest WPW syndrome may have an arrhythmogenic substrate associated with early repolarization, and the characteristic J waves can be masked by the presence of ventricular preexcitation.
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