Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 South Euclid Avenue, Campus Box 8064, St Louis, MO 63110, USA.
Department of Obstetrics and Gynecology, Washington University in St. Louis, 660 South Euclid Avenue, Campus Box 8064, St Louis, MO 63110, USA.
Obstet Gynecol Clin North Am. 2017 Dec;44(4):535-545. doi: 10.1016/j.ogc.2017.07.001.
Modern data have redefined the normal first stage of labor. Key differences include that the latent phase of labor is much slower than was previously thought and the transition from latent to active labor does not occur until about 6 cm of cervical dilatation, regardless of parity or whether labor was spontaneous or induced. Providers should have a low threshold to use one of the safe and effective interventions to manage abnormal progression in the first stage of labor, including oxytocin, internal tocodynamometry, and amniotomy.
现代数据重新定义了正常的第一产程。关键差异包括，与之前的认知相比，潜伏期要长得多，且不管是经产妇还是初产妇，也不管分娩是自发还是引产，从潜伏期进入活跃期都要等到宫颈扩张 6 厘米左右才会发生。对于第一产程进展异常，医护人员应及早采用缩宫素、经阴道内胎儿监护和人工破膜等安全有效的干预措施进行处理。
