Figure 8
From: Passive and active ventricular elastances of the left ventricle
Active elastance vs. incremental pressure. Active elastance vs. incremental pressure (P-Ped) for the same subject as shown in Figure 2. The arrow direction indicates progression of time; 1–5: isovolumic contraction phase; 5–17: ejection phase. Note the rapid decrease in Ea during the isovolumic relaxation that also extends into the filling phase, and causes suction of blood into the LV even before initiation of left-atrial contraction.