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:Hollow, tubular sounds that are higher-pitched. Considered abnormal if heard over the peripheral lung fields. Distinct pause in the sound between inspiration and expiration. Inspiration to expiration ratio of 1:2 or 1:3