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Article
November 6, 1926

Die Elektrokardiographie und andere graphische Methoden in der Kreislaufdiagnostik.

JAMA. 1926;87(19):1580. doi:10.1001/jama.1926.02680190056033

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Abstract

This is a rather complete discussion of the various instruments of precision used in the diagnosis of circulatory disorders. It is prefaced by a description of the earlier recording devices and leads on down through the electrocardiograph. This discussion embraces heart sound curves, the cardiogram, the sphygmogram, the venous pulse tracing, and the electrocardiogram. Then follows a summary of the conclusions that may be drawn from the various curves. Included in the discussion of the different recording devices is an accurate description of the device itself and an explanation of the theories on which it operates. In the case of the electrocardiograph, the different parts of the instrument are described and the origin and progress of the action currents of the heart are dealt with. The latter portion of the book deals with the arrhythmias of the cardiac action. Each of the arrhythmias is dealt with separately, and the effect

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