Variations in the first heart sound in complete A-V block |
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| Authors: | Owen W. Beard George M. Decherd |
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| Affiliation: | 1. Department of Medicine, University of Texas School of Medicine, Galveston, Texas, USA;2. the Heart Station of the John Sealy Hospital, Galveston, Texas, USA |
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| Abstract: | Four patients with complete atrioventricular block have been studied stethographically, and the loudness of the first heart sound related to the preceding P wave. Deductions have been drawn which emphasize the importance of vibrations of valvular origin in the production of the first heart sound. |
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