Heart sounds are one tool providers use to assess heart health. Learn about systolic, diastolic, and S1 to S4 heart sounds in ...

Because the mitral and tricuspid valves normally close almost simultaneously, only a single heart sound is usually heard. However, in about 40% to 70% of normal individuals — as well as in ...

A S4 heart sound can be an important sign of diastolic heart failure or active ischemia and is rarely a normal finding. Diastolic heart failure frequently results from severe left ventricular ...