The third heart sound or S3 is a rare extra heart sound that occurs soon after the normal two "lub-dub" heart sounds (S1 and S2). The S3 is associated with heart failure.
Read more about Third Heart Sound: Physiology, Causes, Treatment
Famous quotes containing the words heart and/or sound:
“Women have their heads in their hearts. Man seems to have been destined for a superior being; as things are, I think women generally better creatures than men. They have weaker appetites and weaker intellects but much stronger affections. A man with a bad heart has been sometimes saved by a strong head; but a corrupt woman is lost forever.”
—Samuel Taylor Coleridge (1772–1834)
“The sound of laughter is like the vaulted dome of a temple of happiness.”
—Milan Kundera (b. 1929)