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Updated: Jul 13, 2026

Semi-automated Optical Heartbeat Analysis of Small Hearts
Published on: September 16, 2009
Echocardiography of the "floppy" aortic valve. Report of a case
Abstract:
The echocardiographic features of a patient with severe aortic regurgitation due to a "floppy" aortic valve are presented. The salient abnormality observed was marked fluttering of the aortic valve cusps in diastole. Fluttering of the anterior leaflet of the mitral valve and left ventricular enlargement were noted. The diagnosis of a "floppy" aortic valve was substantiated at surgery.
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Heart Sounds
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Pulse
The pulse serves as a clinical indicator...
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Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
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Abnormal findings observed during an inspection
Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
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