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Schematic LV PV loop. A PV loop is inscribed between the EDV and ESV. The point of maximal elastance (Emax, red dot) is used to compute the ESPVR (solid line, slope from V0, here simplified to 0 mL) and the arterial elastance function (Ea, dashed line, slope to pressure = 0 at EDV). The area enclosed by the PV loop is the SW, and the area enclosed by the ESPVR and ESV (grey triangle) is the PE. These measures enable subsequent calculation of MEP, VE, and EPEV.
