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heart sound |
Also found in: Wikipedia | 0.03 sec. |
heart sound, a noise produced within the heart during the cardiac cycle that can be heard over the precordium. It may reveal abnormalities in cardiac structure or function. Cardiac auscultation is performed systematically from the apex to the base of the heart or from base to apex, using a stethoscope to listen, initially with the diaphragm and then with the bell of the instrument. Standard heart sounds include S1>, produced by the closure of the atrioventricular valves; S2>, produced by the closure of the semilunar valves; S3; and S4>. Additional heart sounds include clicks, gallops, murmurs, rubs, and snaps. heart sound Cardiology Any normal or abnormal sound heard by auscultation of the heart. See Fourth heart sound, Murmur, Third heart sound. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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I close my eyes and hear the thrush in my heart sound Many have no unusual heart sounds at all; those who do may have clicks and murmurs that come and go. An example is a rapid HR, a falling blood pressure response, and the appearance of a third heart sound, a combinafion of abnormal findings that suggests heart failure. |
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