Effect of isoflurane + N2O inhalation and propofol + fentanyl anesthesia on myocardial function as assessed by cardiac troponin, caspase-3, cyclooxygenase-2 and inducible nitric oxide synthase expression

异氟烷 + N2O 吸入和丙泊酚 + 芬太尼麻醉对心肌功能的影响，以心肌肌钙蛋白、胱天蛋白酶-3、环氧合酶-2 和诱导型一氧化氮合酶表达评估