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Before and after-treatment comparison of cerebral oxygen metabolism of the three patient groups (n=31 )
三组患者治疗前后脑氧代谢指标比较（n=31）
*P<0.05, vs. before treatment; #P<0.05, vs. other groups at the after treatment. CaO2: Arterial oxygen content; Ca-vO2: Arterio-venous oxygen content difference; CERO2: Cerebral extraction rate of oxygen.
