Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea.
PLoS One. 2012;7(6):e39883. doi: 10.1371/journal.pone.0039883. Epub 2012 Jun 29.
To determine if "early rupture of membranes" (early ROM) during induction of labor is associated with an increased risk of cesarean section in term nulliparas.
The rate of cesarean section and the timing of ROM during the course of labor were examined in term singleton nulliparas whose labor was induced. Cases were divided into 2 groups according the timing of ROM: 1)"early ROM", defined as ROM at a cervical dilatation<4 cm during labor; and 2) "late ROM", ROM at a cervical dilatation≥4 cm during labor. Nonparametric techniques were used for statistical analysis.
"Early ROM" during the course of induced labor is a risk factor for cesarean section in term singleton nulliparas.
确定在引产过程中“胎膜早破”(早期 ROM)是否与足月初产妇剖宫产率增加有关。
检查了引产足月单胎初产妇的剖宫产率和产程中 ROM 的时间。根据 ROM 的时间将病例分为 2 组:1)“早期 ROM”,定义为产程中宫颈扩张<4 cm 时 ROM;2)“晚期 ROM”,定义为产程中宫颈扩张≥4 cm 时 ROM。采用非参数技术进行统计分析。
1)在总共 500 例研究人群中,“早期 ROM”占 43%,总体剖宫产率为 15.8%;2)与“晚期 ROM”相比,“早期 ROM”患者剖宫产率和因进展失败而进行的剖宫产率更高(总剖宫产率:24%[51/215] vs. 10%[28/285],p<0.01;因进展失败而进行的剖宫产率:18%[38/215] vs. 8%[22/285],p<0.01 各有),并且在调整混杂变量后这种差异仍然显著。
在引产过程中“早期 ROM”是足月单胎初产妇剖宫产的一个危险因素。