Waldenström U, Gottvall K
Birth. 1991 Mar;18(1):5-10. doi: 10.1111/j.1523-536x.1991.tb00045.x.
Two hundred ninety-four women were randomly allocated to a group in which the use of a birthing stool (experimental group) or a conventional semirecumbent position (control group) was encouraged. The birthing stool was 32 cm high and allowed the parturient to sit upright and to squat. The husband could sit close behind his wife and support her back. No differences were observed between the two groups regarding mode of delivery, length of the second stage of labor, oxytocin augmentation, perineal trauma, labial lacerations, or vulvar edema. Infant outcome measured by Apgar scores at 1 and 5 minutes postpartum and numbers of neonatal intensive care unit transfers was the same in both groups. Mean estimated blood loss and the number of mothers with a postpartum hemorrhage 600 ml or more were greater in the experimental group than in the control group. Women in the experimental group reported less pain during the second stage of labor, and they and their spouses were more satisfied with the birth position than were parents in the control group. Midwives were less satisfied with their working posture in the experimental group.
294名女性被随机分配到一组，其中鼓励使用分娩凳（实验组）或传统的半卧位（对照组）。分娩凳高32厘米，产妇可以坐直并蹲下。丈夫可以坐在妻子身后很近的位置并支撑她的背部。两组在分娩方式、第二产程时长、催产素增加使用、会阴创伤、阴唇撕裂或外阴水肿方面未观察到差异。两组产后1分钟和5分钟时通过阿普加评分衡量的婴儿结局以及新生儿重症监护病房转诊人数相同。实验组的平均估计失血量和产后出血600毫升或更多的母亲人数均高于对照组。实验组的女性在第二产程中报告的疼痛较轻，并且她们及其配偶对分娩姿势的满意度高于对照组的父母。助产士对实验组的工作姿势不太满意。
