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. 2014 Jun;4(2):211–219. doi: 10.1086/676020

Figure 4.

Figure 4

Cartoon illustrating right ventricular pressure-volume loops at varying levels of preload decline. The slope of the gray line connecting the end-systolic pressure points is the end-systolic elastance (EES), a load-independent measure of contractility. The EES can be compared with effective arterial elastance (EA) to assess coupling of right ventricular contractility to pulmonary vasculature load.