Compared with control group , the cTnI ( g/L ) in the treatment group was decreased significantly at 24 , 48 , 72 hours ( 1.15 0.57 vs. 1.74 0.77 , 0.93 0.52 vs. 2.15 1.23 , 0.52 0.36 vs. 2.39 1.17 , all P < 0.01 ) .