Centre des Urgences de Yaoundé, Yaoundé, Cameroun.
Département de gynécologie obstétrique. Faculté de Médecine et des Sciences Biomédicales, Université de Yaoundé I, Yaoundé, Cameroun.
Int J Gynaecol Obstet. 2021 Sep;154(3):481-484. doi: 10.1002/ijgo.13580. Epub 2021 Feb 2.
The rate of perineal tears in Cameroonian primiparous women is reported to be up to 59.7%. The present study aimed to assess the relationship between perineal length and perineal tears.
We conducted a prospective study of primiparous women with singleton pregnancies of at least 36 weeks length. The admitting physician measured the length of the perineal body at the first stage of labor and this value was hidden from the delivery personnel until delivery occurred. The presence of perineal trauma and other delivery characteristics were recorded. Data were analyzed using univariate analyses and multiple logistic regression.
The mean perineal body length was 3.21 ± 0.75 cm (range 1.5-5.5 cm). 34 (33.0%) primiparous women sustained spontaneous perineal tears and 20 (19.4%) had episiotomies. No third- or fourth-degree perineal tears were observed. Perineal body length shorter than 2.5 cm was a significant (P < 0.04) predictor of spontaneous perineal lacerations (58.3% vs. 29.7% with relative risk 0.59). Both duration of second stage of labor longer than 60 min and occiput posterior presentation were associated with an increased risk of episiotomy in primiparous patients.
Perineal body length less than 2.5 cm significantly predisposed to spontaneous perineal lacerations.
据报道，喀麦隆初产妇的会阴撕裂率高达 59.7%。本研究旨在评估会阴长度与会阴撕裂的关系。
我们对至少 36 周妊娠的初产妇进行了前瞻性研究。接诊医生在第一产程测量会阴体的长度，分娩人员在分娩前并不知道该值。记录会阴创伤的存在和其他分娩特征。使用单变量分析和多因素逻辑回归进行数据分析。
会阴体长度的平均值为 3.21±0.75cm（范围 1.5-5.5cm）。34 名（33.0%）初产妇发生自发性会阴撕裂，20 名（19.4%）行会阴切开术。未观察到三度或四度会阴撕裂。会阴体长度小于 2.5cm 是自发性会阴裂伤的显著预测因素（58.3% vs. 29.7%，相对风险 0.59）。第二产程持续时间超过 60min 和枕后位均与初产妇行会阴切开术的风险增加相关。
会阴体长度小于 2.5cm 显著增加自发性会阴撕裂的风险。
