INCOMPLETE BUNDLE-BRANCH BLOCK AND ST-SEGMENT ELEVATION - SYNDROME-ASSOCIATED WITH SUSTAINED MONOMORPHIC VENTRICULAR-TACHYCARDIA IN PATIENTS WITH APPARENTLY NORMAL HEART

This paper reports on three cases of patients with an apparently norma l heart admitted for sustained monomorphic ventricular tachycardia. Th e only abnormal finding showed in the electrocardiogram (ECG) in sinus rhythm that exhibited an entity associated with incomplete right bund le-branch block and persistent ST-segment elevation. The ECG entity wa s variable and disappeared transiently Spontaneous ventricular tachyca rdia in one patient was inducible by programmed stimulation. There was no underlying heart disease. The origin of the ventricular tachycardi a in one patient was located by pace mapping in the left ventricle at the left ventricular basal septum. The follow-up (from 6 months up to 6 years) demonstrated a good prognosis. This particular ECG entity ass ociated with monomorphic ventricular tachycardia could have been misse d because of the variations in the ECG in sinus rhythm and was associa ted with a favorable prognosis.