Dextrocardiogram, Levocardiogram and Septocardiogram as Obtained by Cutting Away of the Ventricular Free Walls of the Perfused Canine Heart

Abstract

Electrocardiograms and vectorcardiograms were recorded before and after the resection of the right, the left or the both ventricular free walls of the perfused canine heart. The amplitude of the QRS complex was decomposed into the three parts which were attributable to the electromotive forces of each of the right and the left ventricular free walls, and the septum, respectively. It was discussed as to what degree the electromotive forces of the right or the left ventricular free wall or the septum would contribute to the formation of the QRS complex of the electrocardiogram and vectorcardiogram.