Ventricular coupling induced by anodal or cathodal polarization during continuous direct currents in dog ventricle

Publisher Website
Google Scholar
Abstract
Ventricular ectopic beats coupled with preceding normal beats occur during the delivery of direct current when the anode or cathode is on the ventricular epicardium of the dog. These ectopic beats are induced within the T-wave or immediately thereafter during the application of threshold direct current when the anode is on the epicardium. When anodal current is begun in the ST segment of a given cycle, an ectopic beat is induced within or near the T-wave of the same cycle. When the cathode is on the epicardium, coupled ventricular ectopic beats are induced within the PR interval during the application of threshold direct current. Under these conditions marked slowing of sinus rate by vagal stimulation does not alter the interval of coupling between the ectopic beat and the preceding normal beat. Thus it is shown that the abnormal ventricular beat, falling within the PR interval, is ectopic and independent of the auricular impulse.

This publication has 6 references indexed in Scilit: