S1 And S1 Heart Sounds · Simple & Pro

Because S1 depends on the position and function of the AV valves at the onset of systole, changes in its intensity or character point to specific cardiac abnormalities.

The marks the beginning of systole , the phase where the heart's ventricles contract to pump blood out. s1 and s1 heart sounds

The apex of the heart (fifth intercostal space, midclavicular line) and the tricuspid area (fourth intercostal space, left sternal border). Because S1 depends on the position and function