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 ( 10.713.4 hours , 197132 mm Hg , 14858.6 IU/L , 42.8 % 22.1 % , respectively ) and group II ( 27.836.5 hours , 227150 mm Hg , 15172.6 IU/L , 50.4 % 16.0 % , respectively ) , levels of median interleukin 6 and tumor necrosis factor were lower in group I ( 129.8 and 17.0 pg/mL , respectively ) than that in group II ( 487.8 and 22.5 pg/mL , respectively ) .