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March 1954

The Ballistocardiogram: A Dynamic Record of the Heart Beat.

AMA Arch Intern Med. 1954;93(3):476. doi:10.1001/archinte.1954.00240270162015

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This small monograph, which represents two lectures presented at the University of Cincinnati Medical School, briefly summarizes the history of the development of ballistocardiography. Certain aspects of the characteristics of the normal and abnormal trace are presented, including those for the vectorballistocardiogram. Included is an appendix which describes selected physical phases of the problem. The author implies that the trace has significant clinical applications which exceed the diagnostic usefulness of the electrocardiogram (Fig. 20). The reviewer wonders how well the electrocardiograms were interpreted, for the author suggests the limitations in his knowledge of electrocardiography when he states on page 22 that the H wave begins at approximately "the same time as the intrinsicoid deflection of the electrocardiogram." It is known that the timing of the intrinsicoid deflection of the electrocardiogram within the electrical cycle of the heart varies with the leads. Furthermore, the author has carefully avoided quoting or including

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