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ARTICLE |

GRAPHIC REGISTRATION OF HEART SOUNDS BY THE ARGON GLOW TUBE

A. GRAHAM ASHER, M.D.
Arch Intern Med (Chic). 1932;50(6):913-920. doi:10.1001/archinte.1932.00150190115010.
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Graphic representation of the auscultatory phenomena of the cardiovascular and respiratory systems, of value to clinician and teacher, has not been widely used because of technical difficulties. The apparatus commonly used has been suited to the physiologic laboratory and not to the office or clinic. The oscillographic records of Einthoven, Lewis, Fahr, Watson and Wemyss, Williams, Wolferth and Hyman, and use of the capsule method by Frank, Wiggers, Broemser, A. Weber and others have thrown considerable light on the physical characteristics and mechanism of the sounds and made more accurate the time relations of heart murmurs. Students of graphic records develop the visual sense in their study of the timing and character of the auscultatory phenomena. They learn to form a visual image of the stethoscopic findings at the time of physical examination. The importance of the stethoscopic findings has recently been properly emphasized by Herrick.1

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