Doyle L W, Bowman E, Davis P, Halliday J
Division of Paediatrics, the Royal Women's Hospital, University of Melbourne, Victoria, Australia.
Aust N Z J Obstet Gynaecol. 1998 Aug;38(3):298-300. doi: 10.1111/j.1479-828x.1998.tb03070.x.
There is little doubt that very preterm infants <30 weeks' gestation should be born in level-3 perinatal centres. For preterm infants 30-36 weeks' gestation, however, the optimum place of birth is not so clear-cut. The aims of this study of livebirths 30-36 weeks' gestational age born in Victoria were to determine: 1) the proportions delivered outside level-3 centres, and 2) for infants born outside level-3 centres, the proportions transferred after birth to a level-3 nursery in the first days after birth. Data on the number of livebirths 30-36 weeks' gestational age in Victoria in the 3 years 1994-1996, inclusive, were supplied by the Victorian Perinatal Data Collection Unit. Data were obtained from the Newborn Emergency Transport Service (NETS) on all transfers within the first 3 days after birth to a level-3 centre for infants born outside level-3 centres. For the 3 years 1994-1996 there were 11,375 livebirths 30-36 weeks' gestational age in Victoria. The proportion born outside a level-3 perinatal unit was 57.9% overall, and rose with increasing gestational age, from 10.9% at 30 weeks to 69.0% at 36 weeks. Of the 6,587 livebirths outside a level-3 centre, 808 (12.3%) were transferred within the first 3 days after birth by NETS to a level-3 centre, the proportions falling with increasing maturity, being 73.7%, 48.5%, 28.4%, 26.9%, 18.8%, 11.8%, and 7.0% at 30, 31, 32, 33, 34, 35, and 36 weeks, respectively. These data may help medical practitioners when determining the place of delivery for infants 30-36 weeks' gestation.
毫无疑问，孕周小于30周的极早产儿应在三级围产期中心出生。然而，对于孕周为30 - 36周的早产儿来说，最佳出生地点并非如此明确。这项针对维多利亚州出生的孕周为30 - 36周活产儿的研究目的是确定：1）在三级中心以外分娩的比例；2）对于在三级中心以外出生的婴儿，出生后最初几天内转至三级新生儿重症监护室的比例。1994 - 1996年（含）这三年间维多利亚州孕周为30 - 36周活产儿数量的数据由维多利亚州围产期数据收集单位提供。从新生儿紧急转运服务（NETS）获取了所有出生后前3天内从三级中心以外出生的婴儿转至三级中心的数据。在1994 - 1996年这三年间，维多利亚州有11375例孕周为30 - 36周的活产儿。总体而言，在三级围产期单位以外出生的比例为57.9%，且随着孕周增加而上升，从30周时的10.9%升至36周时的69.0%。在三级中心以外出生的6587例活产儿中，有808例（12.3%）在出生后前3天内由NETS转至三级中心，该比例随着成熟度增加而下降，在30、31、32、33、34、35和36周时分别为73.7%、48.5%、28.4%、26.9%、18.8%、11.8%和7.0%。这些数据可能有助于医生确定孕周为30 - 36周婴儿的分娩地点。
