PMID: 20104462Jan 28, 2010Paper

Fasciculoventricular accessory pathway: a misleading and unusual bypass tract

Cardiology Journal
Marek Jastrzebski, Piotr Kukla

Abstract

We present the case of a 25 year-old man referred for an electrophysiological study due to suspected pre-excitation as the cause of two recent syncopal episodes. The admission electrocardiogram (ECG) showed a borderline PR interval of 120 ms and apparently small delta waves visible in leads V2-V4. Intracardiac recordings showed a short HV interval of 18 ms that was stable despite decremental atrioventricular conduction. A fasciculoventricular accessory pathway was diagnosed. Administration of ajmaline normalized ECG and HV interval. We discuss electrocardiographical features of this rare bypass tract.

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