足月妊娠胎膜早破发生时间的24 h节律性分析

Analysis of 24 hour rhythm in the timing of pre-labour spontaneous rupture of membranes at term pregnancy

目的分析足月妊娠临产前发生自发性胎膜破裂(SROM)的昼夜频数情况。方法回顾性分析256例足月妊娠临产前发生SROM的病历资料。结果足月妊娠临产前SROM的发生存在着一个显著的24 h节律性,30.1%孕妇在凌晨0:00—4:00时发生SROM(chi-square 57.5,P<0.001)。结论妊娠临产前发生SROM及其随后自然发动的临产存在着24 h节律性。

Objective It is to evaluate the nycterohemeral （24 hour） rhythms in the timing of pre-labour spontaneous rupture of membranes （SROM） at term pregnancy. Methods A retrospective analysis was performed on 256 cases of pre-labour SROM at term. Results A 24 hour rhythm in the timing of SROM was found that 30.1% cases occurring at 00 ： 00 to 04 ： 00 （chi-square 57.5, P 〈0. 001 ）. Conclusion There is a 24 hour rhythm in the timing of SROM in term pregnancy.