A treatise on the diseases of the heart and great vessels, comprising a new view of the physiology of the heart's action : according to which the physical signs are explained / by J. Hope.

  • Hope, James, 1801-1841.
Date:
1832
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the diseases of the heart and great vessels, comprising a new view of the physiology of the heart's action : according to which the physical signs are explained / by J. Hope. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    As the action of the heart, after ceasing to be tumultuous, became somewhat feeble, the second sound was never very audible. It was distinctly- heard, however, by Mr. Field and the writer; but as the others could not satisfactorily recognize it, a general note was deemed inadmissible, and a by-note only was dictated, the point being re- served, for further investigation, at the next expe- riment. By-note.—Mr. Field and Dr. Hope listened with the stethoscope alternately, and counted 1, 2, in unison with the sounds which they heard; while the others saiv that ] coincided with the ven- tricular systole, and 2 with its diastole. This first experiment was not considered con- clusive. In consequence of the turbulence of the heart's action at first, and its feebleness at last, the time favourable for observation was too brief; and, consequently, a majority of the party had not complete confidence in the accuracy of their ob- servations. This diffidence was shown by the second experiment to be greater than the case warranted. The second experiment was performed imme- diately after the first. Experiment II.—The heart of an ass was ex- posed to view in the same manner afl before, but with still greater celerity. For about a minute