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End-diastolic pressure (EDP)-volume relationship (EDPVR) and end-systolic pressure (ESP)-volume relationship (ESPVR) after surgery (patient 1). Solid line, presurgery; shaded line, postsurgery. Line type indicates the pressure-volume relationships resulting from the different prescribed values of ESP and EDP: dashed line: EDP = 4 mmHg and ESP = 90% of systolic blood pressure (SBP); solid line = 12 mmHg and ESP = SBP; dot-dash line: EDP = 20 mmHg and ESP = 110% of SBP.
