过期妊娠胎盘成熟度分级和围产儿结局的关系

Relationship between placenta mature wading and fetal prognosis in postterm pregnancies

目的探讨过期妊娠胎盘成熟度分级与围产儿结局的关系。方法采用回顾性方法，对124例过期妊娠患者在分娩前1d进行B超检查。根据Crannum胎盘成熟度分级，将孕妇分为Ⅱ级胎盘组和Ⅲ级胎盘组，比较两组间孕妇一般情况和新生儿预后指标。结果两组孕妇间一般情况、新生儿Apgar评分、新生儿体重、围产儿结局差异无统计学意义（P〉0．05）。结论过期妊娠胎盘的形态学改变与胎儿不良预后无明确的因果关系，超声不能作为预测过期妊娠围产儿结局的独立指标。

Objective To investigate the possible effects of the ultrasonographic changes in the placenta mature grading and fetal prognosis in postterm pregnancies. Methods Within one day before delivery,ultrasound graphic changes of placenta were surveyed in 124 pregnant women after 42th gestational week. According to Grannum＇s criteria,the pregnant women were classified and divided into grade Ⅱ group and grade Ⅲ group. Apgar scores, amniotic fluid, birth weight and the incidences of adverse events between two groups were compared. Result There were no significant difference between grade Ⅱ group and grade Ⅲ group in predicting the neonatal adverse outcome. Conclusion There is no causal relation between morphology change and fetal bad prognosis in postterm pregnancies, so the ultrasound might not be a single index to predict the prognosis of fetus.