Figure 2. Intracavitary pressure profiles, left ventricular blood volume, longitudinal hemodynamic force, and electrical activity along the cardiac cycle.

Profiles of aortic pressure (red), LV pressure (green), LA pressure (yellow), LV volume (blue), and LV longitudinal force (dark red) during the 5 phases of the cardiac cycle are shown: isovolumic contraction (A), systolic ejection (B), isovolumic relaxation (C), early diastolic filling (D), diastasis (E) and late diastolic filling (F). LA indicates left atrium; and LV, left ventricle.