Albany medical annals (1914) (14595987010)

Identifier: albanymedicalann3519medi (find matches)

Title: Albany medical annals

Year: 1914 (1910s)

Authors: Medical Society of the County of Albany (N.Y.) Albany Medical College. Alumni Association

Subjects: Medicine

Publisher: Albany, N.Y. : Burdick & Taylor

Contributing Library: The College of Physicians of Philadelphia Historical Medical Library

Digitizing Sponsor: The College of Physicians of Philadelphia and the National Endowment for the Humanities

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c wave (the closureof the aortic valves and hence the termination of the ventricularsystole) it becomes evident that the cardiogram does not registerthe whole of the ventricular systole, but only the apex beat.This is shown, also, by another cardiogram. No. C-8, taken atthe same time from the same patient, in which the curve is verydifferent and of longer duration. Thus a cardiogram may noteven show the duration of the ventricular systole. In tracing No. C-9, the epigastric and apical cardiograms arecompared in the first part of the tracing, and it is evident thatas the apex pushes forwards or outwards the body of the ven-tricle draws backwards or inwards. In the last part of the trac-ing the apical and the mid-precordial cardiograms are comparedtogether, but it is evident that the mid-precordial point waschosen too near the apex and its tracing has the characteristicsof the latters curve. In cases where the right ventricle is much enlarged, it may j.r 1 ^ - - - - . i 1 ^ A- _A /I c ^

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1914

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