“Valvular Closure Force Asymmetry Index (VCFAI)”
The S1 heart sound, also known as the "lub" sound, is the first heart sound heard in the cardiac cycle. It is produced by the closure of the atrioventricular (AV) valves, specifically the mitral valve (bicuspid valve) and the tricuspid valve. This sound is louder and more pronounced than S2. s1 s2 heart sounds
Here’s a for S1 and S2 heart sounds — something not just acoustic, but capturing underlying physiological or mechanical significance. “Valvular Closure Force Asymmetry Index (VCFAI)” The S1
Heart sounds are generated by vibrations resulting from sudden changes in blood flow and the tensing of cardiac structures when valves slam shut. Heart Sounds and Murmurs - UTMB also known as the "lub" sound