third heart sound


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Related to third heart sound: fourth heart sound

third heart sound (S3),

occurs in early diastole and corresponds with the end of the first phase of rapid ventricular filling; normal in children and younger people but abnormal in others.
Synonym(s): third sound

third heart sound

S3 gallop, ventricular gallop Cardiology An extra heart sound traditionally regarded as a sign of left ventricular systolic dysfunction–heart failure; its significance differs according to the valve involved and the type of underlying defect; it is caused by rapid ventricular filling, and best heard over the apex with the Pt in supine or left lateral position; it ↑ with inspiration, exercise, elevation of legs, ↑ venous return. Cf Fourth heart sound.

third heart sound

(S3) (thĭrd hahrt sownd)
Occurs in early diastole and corresponds with the end of the first phase of rapid ventricular filling; normal in children and younger people but abnormal in others.
References in periodicals archive ?
A third heart sound is normal in children and young adults, but can be indicative of heart failure in people who are older than 40.
history of acute destabilized HF and the presence of orthopnea, paroxysmal nocturnal dyspnea, nocturnal cough, jugular venous distension, pulmonary rales, third heart sound, and peripheral edema), the diagnostic accuracy of the whole model was increased to 87%.
Elevated jugular venous pressure and a third heart sound are independently associated with adverse outcomes in patients with heart failure, including progression.
AUDICOR(R) is the first technology to synchronize the electrical and mechanical activities of the heart to precisely detect, accurately interpret, and clearly document the presence of the third heart sound (S3) by using the company's patented Correlated Audioelectric Cardiography (COR) technology.
Heard at the cardiac apex were a soft pansystolic murmur of mitral regurgitation and an early low-medium pitched third heart sound immediately followed by a typical diastolic murmur of mitral stenosis.
Research is emphasizing the diagnostic and prognostic role of the third heart sound (S3).
A hyperdynamic 4+/4+ left ventricular impulse was felt and a third heart sound was heard in the anterior axillary line.

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