El-Toukhy T, Ramadan G, Maidman D, Hanna L, Waterstone M
Department of Obstetrics and Gynaecology, Queen Mary's Hospital NHS Trust, Sidcup, UK.
J Obstet Gynaecol. 2007 Aug;27(6):580-4. doi: 10.1080/01443610701469586.
This study sought to investigate the impact of parity on the outcome of external cephalic version (ECV) over a 3-year period. In the study, 163 women with singleton uncomplicated breech pregnancy at term were offered ECV and 103 (63%) underwent the procedure. In 42 women, ECV was successful and 74% had a vaginal vertex delivery; whereas 61 women had a failed ECV and none had a vaginal vertex delivery. The probability of vaginal vertex delivery after ECV increased five-fold in nulliparous women (OR 5.2, 95% CI 1 - 42.8) and four-fold (OR 3.8, 95% CI 1.3 - 11.5) in multiparous women. After successful ECV, 50% of nulliparous women and 88.5% of multiparous women had a vaginal vertex delivery (p = 0.006). Neonatal outcome was favourable in all patients. We conclude that parity has little impact on efficacy of ECV, but significantly influences the overall chance of vaginal vertex delivery in women with an uncomplicated breech presentation at term.
本研究旨在调查在3年期间内，产次对外倒转术（ECV）结局的影响。在该研究中，163名单胎足月单纯臀位妊娠的女性接受了ECV，其中103名（63%）进行了该操作。在42名女性中，ECV成功，74%经阴道顺产；而61名女性ECV失败，无人经阴道顺产。ECV后经阴道顺产的概率在未产妇中增加了五倍（比值比5.2，95%置信区间1 - 42.8），在经产妇中增加了四倍（比值比3.8，95%置信区间1.3 - 11.5）。ECV成功后，50%的未产妇和88.5%的经产妇经阴道顺产（p = 0.006）。所有患者的新生儿结局良好。我们得出结论，产次对外倒转术的疗效影响不大，但对足月单纯臀位的女性经阴道顺产的总体几率有显著影响。
