Little Sarah E, Caughey Aaron B
*Department of Obstetrics, Gynecology and Reproductive Sciences, Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Boston, Massachusetts †Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, Oregon.
Clin Obstet Gynecol. 2015 Jun;58(2):269-81. doi: 10.1097/GRF.0000000000000112.
It is a commonly held belief that labor induction increases the risk of cesarean delivery; women who are induced are at higher risk of cesarean as compared with those in spontaneous labor. This comparison group is inaccurate, however, as women and providers cannot choose spontaneous labor as the alternative to labor induction. With expectant management, spontaneous labor may occur, but as gestation advances, pregnancy complications may occur, or women may progress postterm requiring induction at a later gestation. Using the proper comparison group, studies find that labor induction is actually associated with a small decreased risk of cesarean delivery.
人们普遍认为引产会增加剖宫产的风险;与自然分娩的女性相比,接受引产的女性剖宫产风险更高。然而,这种比较组并不准确,因为女性和医护人员无法选择自然分娩来替代引产。采用期待管理时,可能会出现自然分娩,但随着孕周增加,可能会出现妊娠并发症,或者女性可能会过期妊娠,需要在更晚的孕周进行引产。使用恰当的比较组后,研究发现引产实际上与剖宫产风险略有降低有关。