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Prevalence and Significance of Ventriculoatrial Conduction
Author(s) -
WESTVEER DOUGLAS C.,
STEWART JAMES R.,
GOODFLEISH ROBERT,
GORDON SEYMOUR,
TIMMIS GERALD C.
Publication year - 1984
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.1540-8159.1984.tb05617.x
Subject(s) - medicine , cardiology , thermal conduction , tachycardia , anesthesia , electrical conduction system of the heart , atrioventricular node , electrocardiography , materials science , composite material
Because retrograde atrioventricular conduction may predispose to pacemaker‐induced tachycardia when DDD pacing is employed, we assessed ventriculo‐atrial conduction in 117 patients undergoing electrophysiologic studies. Ventriculo‐atrial conduction was present in 40% with a mean (±sem) conduction time of 205 ± 12 ms. The maximum VA conduction time following minimum extrastimulus intervals averaged 258 ± 14 ms. Antegrade AV nodal properties predicted VA conduction in only 67% by using stepwise discriminant analysis. Only the PR interval, AH interval, and AV nodal effective refractory periods were helpful in predicting ventriculo‐atrial conduction. Although ventriculo‐atrial conduction time increased on most antiarrhythmic drugs, it was infrequently eliminated.