question: Compared to control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead what was the result of morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root on left ventricular ejection fraction; cardiac output?
context: Morphine-induced postconditioning reduced postoperative peak cTnI release as compared to the control group (0.57 ± 0.15 versus 0.75 ± 0.20 ng/mL, p<0.0001).