Mahomed K, Seeras R, Coulson R
Dept. of Obstetrics and Gynaecology, University of Zimbabwe, Harare.
Br J Obstet Gynaecol. 1991 Jan;98(1):8-13. doi: 10.1111/j.1471-0528.1991.tb10303.x.
To assess the role of external cephalic version (ECV) at term, using tocolysis.
A randomized controlled trial over a 12 month period.
Harare Maternity Hospital, Harare, Zimbabwe.
208 women with breech presentation at term were recruited after satisfying eligibility criteria. There were 103 women in the study group and 105 in the control group. At the end of the study a further 104 women were recruited for ECV.
ECV attempted after intravenous injection of 10 micrograms of hexaprenaline, using either forward or backward somersault over a maximum period of 5 min.
Success rate in terms of presentation during labour, need for caesarean section, and various variables related to fetal outcome.
ECV reduced the frequency of breech presentation during labour from 83% to 17% and that of caesarean section from 33% to 13%. There were no troublesome complications from the procedure.
In carefully selected women with breech presentation, ECV at term using tocolysis, safely reduced the rate of breech presentation in labour and also the caesarean section rate. Further research is needed to determine the role of ECV in early labour.
评估足月时使用宫缩抑制剂进行外倒转术（ECV）的作用。
为期12个月的随机对照试验。
津巴布韦哈拉雷市哈拉雷妇产医院。
208名足月臀位孕妇在满足入选标准后被招募。研究组有103名妇女，对照组有105名。研究结束时，又有104名妇女被招募进行外倒转术。
静脉注射10微克己丙肾上腺素后尝试进行外倒转术，采用前翻或后翻，最长时间为5分钟。
分娩时胎位的成功率、剖宫产的需求以及与胎儿结局相关的各种变量。
外倒转术将分娩时臀位的发生率从83%降至17%，剖宫产率从33%降至13%。该手术没有出现麻烦的并发症。
在精心挑选的臀位孕妇中，足月时使用宫缩抑制剂进行外倒转术可安全降低分娩时臀位的发生率以及剖宫产率。需要进一步研究以确定外倒转术在早产中的作用。
