Campbell M K
Department of Epidemiology, University of Western Ontario, London, Canada.
Curr Opin Obstet Gynecol. 1997 Dec;9(6):356-60.
Studies published in the past year confirm that, under current conditions of good ascertainment of gestational age and careful clinical management of post-term pregnancies, post-term births are not at increased risk of perinatal mortality. They are, however, still at increased risk of intrapartum fetal distress and cesarean birth. The main risk factor for poor fetal and neonatal outcomes is small fetal size. Risk markers for those at risk of intrapartum difficulties include amniotic fluid volume and fetal biophysical profile. While there is no longer increased mortality associated with post-term birth per se, this is very much the result of clinical selection factors and modern perinatal management. Post-term pregnancies remain an obstetrical risk group.
过去一年发表的研究证实，在目前孕周确定良好且对过期妊娠进行仔细临床管理的情况下，过期产儿的围产期死亡率并未增加。然而，他们在分娩期胎儿窘迫和剖宫产方面的风险仍然增加。胎儿和新生儿预后不良的主要危险因素是胎儿体型小。分娩期困难风险人群的风险标志物包括羊水量和胎儿生物物理评分。虽然过期产本身不再伴有死亡率增加，但这很大程度上是临床选择因素和现代围产期管理的结果。过期妊娠仍然是一个产科风险群体。
