Table 2.

Serum levels of CK-MB in the sufentanil and control groups over time^*

	Sufentanil Group	Control Group	P value
CK-MB at induction time (U/L)	18.30±8.25	19.50±7.13	0.489
CK-MB 4 h after unclamping (U/L)	65.25±15.63	95.75±22.55	<0.001
CK-MB 8 h after unclamping (U/L)	45.58±13.91	73.78±18.77	<0.001
CK-MB 24 h after unclamping (U/L)	27.83±11.45	41.63±12.51	<0.001

^*Data are presented as mean±SD