THE VENTRICULAR ELECTROCARDIOGRAM

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Abstract
The experimental work on the ventricular electrocardiogram by Rothberger and Lewis and their co-workers, Wilson and Herrmann,1Smith,2and others, indicates that the principal divisions of the electrocardiogram, namely, the QRS complex and the T wave, may not be commonly or equally affected under abnormal conditions, and that this is because the QRS represents the excitation and the T wave the retreat of the process by virtue of which the contraction occurs. The practical value of the unequal response for differential diagnosis suggested an investigation of the curve of the ventricle from this angle and the report which follows is concerned with the nature of the disturbances required to affect the component portions of the ventricular electrocardiogram; in other words, the relation of the changes in the QRS (an in this connection also the associated question regarding arborization block was involved), the T wave and the RT period, to the

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