Research studies have demonstrated that listening to a heart sound for 2-3 minutes can help students master auscultation.
For textual descriptions, waveforms and heart animations, please use our courses on this website.
S1: Systole: S2: Diastole: Features:Brief, popping sounds that are high-pitched. Fine crackles are similar to wood burning in a fireplace. Crackles are more commonly heard during inspiration