S1 and S2 are the normal heart sounds you hear when the heart valves close. Heart murmurs are extra sounds that can be heard during systole, diastole, or as a continuous sound. S3 and S4 are abnormal ...

A heart murmur is, as the name suggests, a sound that occurs during a heartbeat, caused by rapid, turbulent blood flow through the heart. Characterised as a whooshing or swishing sound, these heart ...