中凹卧位对剖宫产产妇仰卧位低血压综合征的影响

Effect of concave recumbent position on supine hypotension syndrome in puerpera undergoing Cesarean section

目的观察脊麻中凹卧位对剖宫产产妇仰卧位低血压综合征(SHS)的影响。方法足月妊娠择期脊麻下剖宫产产妇80例随机均分为两组,A组取中凹卧位,B组采取左侧倾斜15度卧位。观察麻醉前及脊麻后3min两组下腔静脉内径的变化,比较两组SHS发生率。结果麻醉前后A组下腔静脉内径大于B组(P<0.05)。A组SHS发生率低于B组(15.0%vs.40.0%)(P<0.05)。结论中凹卧位可改善脊麻前后剖宫产术中妊娠子宫对下腔静脉的压迫,降低SHS发生率。

Objective To observe the effect of concave recumbent position on supine hypotension syndrome in puerpera undergoing Cesarean section. Methods Eighty full term pregnancy women undergoing selective Cesarean delivery were equally randomized into two groups of A （under concave recumbent position） and B（under 15 degrees left up position）. The incidence of maternal hypotension was recorded and compared. The diameter of the inferior vena cava was measured by ultrasound before and under concave recumbent position. Results The incidence of hypotension under supine position during operation was less in group A than that in group B（15.0% vs. 40.%） （P〈0. 05）. The diameter of the inferior vena cava in group A was greater than that before and in group B （P〈0. 05）. Conclusion Cesarean section under concave recumbent position is better than conventional 15 degrees left up position in reducing incidence of supine hypotension syndrome by attenuating the compression of the uterus on the inferior vena cava.