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. 2019 Dec;47(12):6091-6099.
doi: 10.1177/0300060519884145. Epub 2019 Nov 19.

Labor patterns in Chinese women in Fuzhou attempting vaginal birth after previous cesarean delivery: a retrospective cohort study

Lianghui Zheng  1 , Qinjian Zhang  1 , Qiuping Liao  1 , Rongxin Chen  1 , Rongli Xu  1 , Qing Han  1 , Jianying Yan  1
Affiliations

Labor patterns in Chinese women in Fuzhou attempting vaginal birth after previous cesarean delivery: a retrospective cohort study

Lianghui Zheng et al. J Int Med Res. 2019 Dec.

Abstract

Objective: To investigate the characteristics of labor in Chinese women who successfully have vaginal birth after cesarean section (VBAC).

Methods: A retrospective cohort study was conducted in a hospital with 1000 beds between January 1 2015 and December 31 2017. A total 657 parturients with VBAC were selected. Women were divided into two groups according to previous cesarean section with or without trial of labor. Labor curves were analyzed and interval-censored regression was used to estimate the duration of labor.

Results: The 95th percentile for the first stage of labor in VBAC was 13.03 hours, and labor accelerated after 4 cm of cervical dilation in both groups. The dilation rate in the trial of labor group was superior to that in the non-trial of labor group at 6–10 cm of dilation. After 6 cm, labor accelerated much faster in the trial of labor group than in the non-trial of labor group.

Conclusions: Management of labor in parturients with VBAC whose cervical dilation is >6 cm should be treated differently according to previous cesarean section with or without trial of labor. If there is trial of labor in a previous delivery, the duration of labor should be shortened.

Keywords: Vaginal birth after cesarean section; cervical dilation; labor curve; labor duration; trial of labor; vaginal delivery.

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Figures

Figure 1.
Figure 1.
Average labor curves of women in the two groups.
Figure 2.
Figure 2.
Comparison of the 95th percentiles of the cumulative duration of labor in the two groups.
See this image and copyright information in PMC

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