Although we observed no statistically significant differences in postoperative intubation time , alveolar-arterial oxygen difference , creatine kinase MB level , and pulmonary hypertension ( Pp/Ps ) between group I ( @ hours , @ mm Hg , @ IU/L , @ % @ % , respectively ) and group II ( @ hours , @ mm Hg , @ IU/L , @ % @ % , respectively ) , levels of median interleukin @ and tumor necrosis factor were lower in group I ( @ and @ pg/mL , respectively ) than that in group II ( @ and @ pg/mL , respectively ) .