【摘 要】
：
早产是指在满28孕周至37孕周之间(196~258天)的分娩。文献报道早产占分娩数的5%~15%。在此期间出生的体重1000g~2499g、身体各器官未成熟的新生儿,称为早产儿。早产儿死亡率
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早产是指在满28孕周至37孕周之间(196~258天)的分娩。文献报道早产占分娩数的5%~15%。在此期间出生的体重1000g~2499g、身体各器官未成熟的新生儿,称为早产儿。早产儿死亡率国内为12.7%~20.8%,国外则胎龄越小、体重越低,死亡率越高。死亡原因主要是围生期窒息、颅内出血、畸形。早产儿即使存活,亦多有神经智力发育缺陷。因此,防止早产是降低围生儿死亡率和提高新生儿素质的主要安全措施之一。
Preterm delivery refers to delivery between the 28th gestational week and 37th gestational week (196 to 258 days). Reported in the literature premature birth accounted for 5% to 15%. During this period was born weighing 1000g ~ 2499g, immature organs of various organs, called premature children. The mortality rate of premature children in China is 12.7% ~ 20.8%, while abroad, the smaller the gestational age, the lower the body weight, the higher the mortality rate. The main cause of death is perinatal asphyxia, intracranial hemorrhage, deformity. Even premature children survive, but also more than the mental retardation of mental development. Preventing premature birth is therefore one of the main safety measures to reduce perinatal mortality and improve the quality of newborns.
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