in this study , load-independent end-systolic indexes of left ventricular contractility were measured by echocardiography and calibrated carotid pulse tracings in 10 patients who had undergone orthotopic cardiac transplant ( age 48 +/- 4 years ; interval from operation to study 1.2 +/- 0.8 years ) and in 10 normal control subjects ( age 25 +/- 4 years ) matched for donor heart age ( 25 +/- 6 years ) .
C0225897
left ventricular
C0018787
cardiac