On the Cardiograph Trace


By placing the sphygmograph, as constructed by M. Marey, over that portion of the chest where the heart can be best felt beating, instead of on the wrist-pulse for which the instrument is constructed, tracings called cardiograms can be obtained which bring to light physiological facts not otherwise ascertainable. In the last-published volume of the Guy's Hospital Reports there is a paper by Dr. Galabin, on the interpretation of these tracings, which will be read with interest by physiologists on account of the considerable difficulty there is connected with all attempts to explain the numerous ups and downs which they present between any two pulsations of the heart, and also because of the comparatively slight attention which they have had paid to them.

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GARROD, A. On the Cardiograph Trace . Nature 12, 275–276 (1875). https://doi.org/10.1038/012275a0

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