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早产为妊娠满 2 8周至不满 37足周 (1 96～ 2 5 8d)间的分娩。早产占分娩总数的 5 %～ 1 5 %。 75 %以上的围生儿死亡与早产有关[1 ] 。存活的早产儿中 1 0 %～ 30 %留有神经系统后遗症或智力障碍 ,但对早产的病因、发病机制尚未完全阐明 ,因此对早产的研究有重要意义。大多数?
Premature delivery is between 18 weeks of pregnancy and less than 37 full-week (1 96 ~ 2 5 8d) childbirth. Premature labor accounted for 5% to 15% of the total number of deliveries. More than 75% of perinatal deaths are associated with preterm birth [1]. Survival of preterm children 10% to 30% of nervous system sequelae or mental retardation, but the etiology and pathogenesis of preterm birth has not been fully elucidated, so the study of preterm birth is of great significance. most?