Yuichiro Kawamura, MD; Ayumi Yoshida, MD; Eri Toyoshima, MD; Nobuyuki Sato, MD; Eiji Kawashima, MD; Naoyuki Hasebe, MD; Kenjiro Kikuchi, MD; Hironobu Matsuhashi, MD

Abstract
A 65-year-old woman was admitted for assessment of recurrent tachycardia. Cross-sectional echocardiography showed that the anterobasal portion of the ventricular septum was thin and dyskinetic. An electrophysiologic study revealed ventricular tachycardia, during which marked fragmented potentials could be obtained from the anterior septal aspect of the right ventricle. The site of earliest activation was in the vicinity of the His bundle. A diagnosis of cardiac sarcoidosis was made by based on endomyocardial biopsy combined with the clinical manifestations. Ventricular tachycardia originating from the anterior septum may be an indicator of underlying cardiac sarcoidosis.
(Jpn Circ J 1998; 62: 458-461)

Key Words: Cardiac sarcoidosis; Ventricular tachycardia; Electrophysiologic study; Echocardiography; Fragmented potentials

Mailing address: Yuichiro Kawamura, MD, First Department of Internal Medicine, Asahikawa Medical College, 4-5-3-11 Nishikagura, Asahikawa 078, Japan