Nielsen T F, Hökegård K H, Moldin P G
Acta Obstet Gynecol Scand. 1985;64(6):485-90. doi: 10.3109/00016348509156726.
The benefits of X-ray pelvimetry and electronic monitoring of fetal heart rate and intra-uterine pressure were studied prospectively in order to predict the likelihood of a successful vaginal birth after previous cesarean section (CS). In 1982, a total of 369 parturients (7% of all deliveries) who had previously undergone CS were studied. Trial of labor (TL) was allowed in 160 cases (43.4%) and planned repeat CS was performed in 209 patients (56.6%). Patients in the TL group were compared with a matched control group. One hundred and fifty patients (94%) in the TL group gave birth by the vaginal route. There were no differences in the duration of the first and second stage of labor, duration of ruptured membranes (ROM), maternal blood loss or the incidence of CS and vacuum extraction between the TL group and the control group. Rates of low Apgar score (less than 7) at 1 and 5 min were the same in both groups. Intensive fetal monitoring during the course of labor, together with X-ray pelvimetry in selected cases, markedly reduced the incidence of acute repeat CS with no change in the overall rate of successful vaginal delivery compared with our previous results.
为预测既往剖宫产术后成功阴道分娩的可能性，对X线骨盆测量及胎儿心率和宫内压电子监测的益处进行了前瞻性研究。1982年，共研究了369例既往接受过剖宫产的产妇（占所有分娩的7%）。160例（43.4%）产妇进行了试产（TL），209例（56.6%）患者计划再次剖宫产。将TL组患者与匹配的对照组进行比较。TL组150例（94%）产妇经阴道分娩。TL组与对照组在第一产程和第二产程的时长、破膜（ROM）时长、产妇失血量或剖宫产及真空吸引发生率方面无差异。两组1分钟和5分钟时低Apgar评分（低于7分）的发生率相同。与我们之前的结果相比，产程中强化胎儿监测以及对部分病例进行X线骨盆测量，显著降低了急性再次剖宫产的发生率，同时成功阴道分娩的总体发生率未发生变化。
