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A Possible Role of the Specialized Conduction System in the Conversion of Ventricular Tachycardia to Ventricular Fibrillation *
Author(s) -
SCHROEDER PAUL,
LYONS CHALMERS
Publication year - 1982
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1982.tb02305.x
Subject(s) - medicine , cardiology , ventricular tachycardia , ventricular fibrillation , sinus rhythm , fibrillation , tachycardia , bundle of his , electrical conduction system of the heart , anesthesia , electrocardiography , atrial fibrillation
Electrode recordings from the right bundle brunch. His bundle. and right atrium in a canine preparation enabled us to observe the activation of the ventricular myocardium and the specialized conduction system during the conversion of ventricular tachycardia to ventricular fibrillation. At times when ventricular tachycardia degenerated to ventricular fibrillation, asynchronous activation of the right bundle branch and the ventricular myocardium was frequently noted. Such asynchrony of activation was not seen during the spontaneous conversion of ventricular tachycardia to sinus rhythm. We suggest that this asynchronous activity produces increasing fractionation of ventricular activation fronts, which in turn yields fihrillation. (PACE, Vol. 5, September‐October, 1982)