Methods Sixty termed parturients scheduled for selective caesarean section under combined spinal epidural anesthesia were randomly divided into three groups:group T 0(20 cases,0 9% NaCl 2ml i.m.)

• 方法 6 0例足月妊娠剖宫产产妇随机分三组 :T0 组 ,2 0例 ,肌注 0 9%25氯化钠 2ml;