The third heart sound or S3 is a rare extra heart sound that occurs soon after the
normal two "lub-dub" heart sounds S3 is associated with heart failure. Contents.
The third heart sound (S3), also known as the "ventricular gallop", occurs just
after S2 when the mitral valve opens allowing passive filling of the left ventricle.
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S3 results from the impact of inflowing blood against a distended or incompliant
ventricle in mid diastole. It is a low-frequency sound occurring ~120-150 msec ...
In the presence of a third heart sound (S3) the first heart sound is decreased in
intensity while the second heart sound is increased in intensity. The third heart ...
Diagram of S3 S4 heart sounds during systole and diastole. A triple rhythm in
diastole is called a gallop and results from the presence of a S3, S4 or both.
Rubs, Gallops, and Continuous Murmurs. You are listening to a typical example
of a third heart sound, or S3. Shortly after S2, the closing of the semilunar valves,
This page includes the following topics and synonyms: S3 Heart Sound, S3
Gallop, S3 Gallup Rhythm, Third Heart Sound.
October, 1999 - A third heart sound may be the earliest clue to heart failure. It
predicts a high risk of complications in non-heart surgery. CHF patients with an