Heart sounds – S1, S2, S3, and S4 | Normal and Abnormal characteristics

We have discussed all the four heart sound with normal and abnormal characteristics. First heart sound(S1) Second heart sound(S2) Third heart sound(S3) Fourth heart sound(S4) A. First heart Sound (S1) : I. Description : The First Heartbeat (S1) The shutting of the mitral and tricuspid valves causes the first heart sound. The sound produced by … Continue reading Heart sounds – S1, S2, S3, and S4 | Normal and Abnormal characteristics