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在区域麻醉下行剖腹产手术时,产妇常规吸氧的意义备受争议。Khaw等(Khaw KS,Ngan WD,Lee A,et al.Supplementary oxygen for elective caesarean section under spinal anaesthesia:useful in prolonged uterine incision-to-delivery interval? Br J Anaesth,2004,92:518-522)通过一项前瞻性随机、双盲、对照试验。观察了剖腹产手求中子