Copyright © 1985 by the European Society of Cardiology.
© 1985 The European Society of Cardiology
Morphological findings in apparently idiopathic ventricular tachycardia. An echocardiographic haemodynamic and histologic study
Department of Cardiology Trieste, Italy
*Department of Histopathology Ospedale MaggioreUniversity of Trieste Trieste, Italy
Received 31 July 1984; revised 8 January 1985; .
Tullio Morgera M.D., Divisione di Cardiologia, Ospedale Maggiore, P.zza Ospedale 1, 34129, Trieste, Italy.
Abstract
In order to investigate the anatomic substrate of idiopathic ventricular tachycardia (VT) 10 patients with chronic recurrent VT and no apparent sign of heart disease underwent an echocardiographic, haemodynamic and histologic study (5 males, 5 females: mean age=40±11 years).
In the patients with a left bundle branch block morphology of VT (7 cases), four showed findings compatible with an arrhythmogenic right ventricular dysplasia or a right ventricular cardiomyopathy. In the other three all examinations were normal with the exception of endomyocardial biopsy, which showed slight non specific changes in two. Of the remaining 3 cases (characterized by a right bundle branch block morphology of VT or by the presence of polymorphic VT) one had histologic evidence of myocarditis while another developed dilated cardiomyopathy.
Macroscopic and/or microscopic ventricular abnormalities are frequently found in patients with VT which appears idiopathic. In these cases myocardial disease is frequently progressive, despite optimal control of VT.
Key Words: Echocardiography endomyocardial biopsy cardiomyopathy
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