Watson W J, Stevens D, Welter S, Day D
Department of Perinatal medicine, Sioux Valley Hospital, Sioux Falls, South Dakota.
Obstet Gynecol. 1996 Dec;88(6):990-2. doi: 10.1016/s0029-7844(96)00321-3.
To evaluate maternal parity, the sonographic measurement of cervical length, and the five components of the Bishop score to determine which factors best predict the length of latent-phase labor in women undergoing labor induction.
Cervical position, cervical consistency, cervical effacement, cervical dilation, station of fetal presenting part, maternal parity, and sonographic measurement of cervical length were studied prospectively in 109 women undergoing labor induction. A multiple regression model was used to determine which factors best predict the length of latent-phase labor.
A model using these seven factors was predictive in determining the number of hours of latent-phase labor (F = 32.1, P < .001). Backward stepwise multiple linear regression indicated that only cervical dilation independently predicted the length of latent-phase labor. There was a significant correlation between the clinical assessment of cervical effacement and the sonographic estimation of cervical length, (r = -0.523, P < .001).
Only cervical dilation appears to predict the length of latent-phase labor. The sonographic evaluation of cervical length and maternal parity do not add significant independent information.
评估产妇的产次、宫颈长度的超声测量以及Bishop评分的五个组成部分，以确定哪些因素最能预测引产女性潜伏期的时长。
对109名接受引产的女性进行前瞻性研究，观察宫颈位置、宫颈质地、宫颈消退情况、宫颈扩张程度、胎儿先露部位置、产妇产次以及宫颈长度的超声测量。采用多元回归模型确定哪些因素最能预测潜伏期的时长。
使用这七个因素的模型在确定潜伏期时长方面具有预测性（F = 32.1，P < .001）。向后逐步多元线性回归表明，只有宫颈扩张程度能独立预测潜伏期的时长。宫颈消退的临床评估与宫颈长度的超声估计之间存在显著相关性（r = -0.523，P < .001）。
似乎只有宫颈扩张程度能预测潜伏期的时长。宫颈长度的超声评估和产妇产次并不能提供显著的独立信息。
