Loftin Ryan W, Habli Mounira, Snyder Candice C, Cormier Clint M, Lewis David F, Defranco Emily A
Rev Obstet Gynecol. 2010 Winter;3(1):10-9.
In the United States, preterm birth rates continue to rise. Many reasons account for this increase, such as demographic changes, infertility treatments, increases in maternal age, more multiple gestations, increasing obesity rates, and maternal comorbid conditions. The American College of Obstetricians and Gynecologists suggests that preterm birth rates have also increased because of a dramatic rise in late preterm births, defined as births between 34 weeks and 36-6/7 weeks of gestation. Late preterm newborns are the fastest growing subset of neonates, accounting for approximately 74% of all preterm births and about 8% of total births. Reviewed is the current literature with regard to the growing problem of late preterm birth to provide the reader with a comprehensive overview of the burden of late preterm birth and to reassess the clinical opinion regarding timing of delivery.
在美国，早产率持续上升。多种原因导致了这一增长，比如人口结构变化、不孕治疗、产妇年龄增加、多胎妊娠增多、肥胖率上升以及产妇合并症。美国妇产科医师学会指出，早产率上升还归因于晚期早产的显著增加，晚期早产定义为妊娠34周与36⁺⁶/⁷周之间的分娩。晚期早产新生儿是增长最快的新生儿亚组，约占所有早产的74%，占总出生数的约8%。本文回顾了有关晚期早产这一日益严重问题的当前文献，旨在为读者全面概述晚期早产的负担，并重新评估关于分娩时机的临床观点。
