Electrical Activity During the P-R Interval

Author:

HOFFMAN BRIAN F.1,CRANEFIELD PAUL F.1,STUCKEY JACKSON H.1,BAGDONAS ALBIN A.1,Piera Juan1

Affiliation:

1. Departments of Physiology and Surgery, State University of New York Downstate Medical Center, Brooklyn, N. Y.

Abstract

Electrical activity of the specialized conducting system (His bundle, bundle branches, false tendons and peripheral Purkinje fibers) of canine hearts has been recorded in situ through electrodes attached to the endocardium during total cardiopulmonary bypass. Simultaneous records from multiple sites have been correlated with electrocardiograms to indicate the sequence of activation of the specialized conducting system during normal and retrograde activation and during vagal stimulation. The results obtained indicate that the method employed has several advantages among which are an absence of injury at the recording site and an applicability to chronic studies.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Cardiology and Cardiovascular Medicine,Physiology

Reference19 articles.

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2. HOFFMAN B. F. : Eloctrophysiology of the Heart. New York McGraw-Hill Book Co. Inc. 1960.

3. Electrical activity in sinus node and atrioventricular node

4. The Mechanism of Atrioventricular Conduction

5. Action potentials supporting the presence of specialized conduction pathways in the dog's ventricle;BURCHELL H. B.;Circulation Research,1953

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