third heart sound


Also found in: Dictionary, Encyclopedia.
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 ?
d) Controlling for age, sex, eGFR, 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.
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.
1] These guidelines noted that the presence of elevated jugular venous pressure, a third heart sound, and laterally displaced apical impulse are "virtually diagnostic in patients with compatible symptoms," while the sensitivity and specificity of other clinical features have not proven sufficient to establish the diagnosis.
Research is emphasizing the diagnostic and prognostic role of the third heart sound (S3).
In one of the studies beneficial response was also noted for: orthopnea, presence of third heart sound and the number of patients classified as NYHA Class III and IV.

Full browser ?