Hauth John C
Department of Obstetrics and Gynecology, University of Alabama at Birmingham, USA.
Semin Perinatol. 2006 Apr;30(2):98-102. doi: 10.1053/j.semperi.2006.02.008.
Nationwide the American College of Obstetricians and Gynecologists noted in 1995 that the survival rate for newborns at 34 weeks is within 1% of those born at or beyond 37 weeks. Newborn major morbidity is slightly but significantly increased from 34(0) to 36(6) compared with 37 or greater weeks. These data form the basis for and reflect the perinatal outcomes associated with the standardized obstetric practices of effecting delivery for women with amnion rupture and also of not attempting tocolysis for preterm labor at or beyond 34(0) weeks gestation. Pragmatically, a prospective randomized management trial of women at late preterm gestation (34(0) to 36(6)) and with spontaneous preterm labor or amnion rupture would require multi-institutional support to achieve a required study population.
美国妇产科医师学会在1995年指出，全国范围内，孕34周新生儿的存活率与孕37周及以上出生的新生儿存活率相差不超过1%。与孕37周及以上相比，孕34（0）至36（6）周新生儿的主要发病率略有但显著增加。这些数据构成了相关依据，并反映了与胎膜破裂妇女实施分娩以及孕34（0）周及以上早产不尝试进行宫缩抑制的标准化产科实践相关的围产期结局。实际上，对晚期早产（34（0）至36（6）周）且有自发性早产或胎膜破裂的妇女进行前瞻性随机管理试验，需要多机构支持才能达到所需的研究人群。
