What Is S1 Heart Sound Jun 2026

The intensity of S1 is highly variable and diagnostically valuable. It primarily depends on three factors: (1) the position of the AV valve leaflets at the onset of systole, (2) the structural integrity of the valve, and (3) the force of ventricular contraction.

S1 is a composite sound resulting from vibrations created by the closure of the heart valves and the sudden deceleration of blood flow. what is s1 heart sound