Overview
Pause the monitor and inspect the cardiac-cycle/Wiggers study. The model adds relevant sound-event labels for the selected disease and rhythm, including examples such as S3, S4, an opening snap or a midsystolic click.
Opening snaps appear at every mitral-stenosis grade. Higher left atrial pressure shortens A2–OS; LV systolic pressure also affects the interval. Hover or touch the sound marker for its modeled interval in milliseconds. This is not a valve-area measurement.
AEC and PEC follow modeled aortic and pulmonic opening. In the pulmonary-stenosis examples, increasing RV pressure loading brings the click toward S1. Aortic click timing is not a fixed severity scale; a calcified, immobile valve may have no click. Prolapse clicks retain their response to ventricular loading, rather than assuming mitral-regurgitation grade alone determines timing.
These labels are timed teaching markers. They are not a recorded phonocardiogram or proof that every person with the selected condition would have that sound.
Loading maneuvers can change the MVP/dynamic-obstruction teaching example. Compare the phase marker and the current disease state when explaining the timing.