spontaneous restoration
1.Group 1 received placebo(NaCl 0.9%) 1 ml/kg immediately before CPR,and immediately after restoration of spontaneous circulation(ROSC).
2.The rats were killed and the cerebral tissues were sampled 30,60,and 120 minutes after the restoration of spontaneous circulation(ROSC) in groups S and H and 15 minutes after femoral artery were cannulated in group C.

