Department of Obstetrics and Gynecology I, Klinikum Kreuzschwestern Wels, Wels, Austria.
Int J Gynaecol Obstet. 2012 Feb;116(2):134-7. doi: 10.1016/j.ijgo.2011.09.027. Epub 2011 Dec 9.
To determine obstetric outcomes after external cephalic version (ECV) performed at term.
In a retrospective study of ECV among pregnant women at term at Klinikum Kreuzschwestern Wels between January 1999 and June 2010, univariate and multivariate logistic regression was used to analyze factors influencing success rate.
Among 379 ECV attempts, 49.1% (95% confidence interval, 44.1-54.1) were successful. Success rate was dependent on parity, gestational age, and performing physician. Increasing parity was associated with increasing success rate (P=0.05). Gestational age had no influence until week 39, after which the success rate increased (success after completion of week 35, 48.1%; week 37, 43.7%; week 38, 43.5%; week 39, 64.9%; week 40 or more, 90.9%; P=0.19). The performing physician had a significant influence (P<0.0005). Regarding obstetric outcome, spontaneous re-version occurred in 8.1% of women, 81.1% of women delivered vaginally, 7.9% had unplanned cesarean delivery, and 4.9% had vacuum extraction. No harm to fetal or maternal health resulted from ECV.
ECV was found to be a safe procedure at term. The skill of the physician significantly affected the success rate. The rate of surgical delivery after successful ECV was low. A trial of ECV at term and beyond is feasible.
确定足月行外倒转术（ECV）后的产科结局。
在 1999 年 1 月至 2010 年 6 月期间于 Klinikum Kreuzschwestern Wels 对足月行 ECV 的孕妇进行回顾性研究，采用单变量和多变量逻辑回归分析影响成功率的因素。
在 379 次 ECV 尝试中，成功率为 49.1%（95%置信区间，44.1-54.1）。成功率取决于产次、孕龄和实施医生。产次增加与成功率增加相关（P=0.05）。孕龄在 39 周前没有影响，之后成功率增加（35 周后成功率为 48.1%；37 周为 43.7%；38 周为 43.5%；39 周为 64.9%；40 周或以上为 90.9%；P=0.19）。实施医生有显著影响（P<0.0005）。关于产科结局，8.1%的妇女自发性反转，81.1%的妇女阴道分娩，7.9%的妇女计划外剖宫产，4.9%的妇女行真空吸引。ECV 对胎儿或产妇健康无不良影响。
ECV 在足月时是一种安全的操作。医生的技能显著影响成功率。成功 ECV 后的手术分娩率较低。在足月及以后尝试 ECV 是可行的。
