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首页> 外文期刊>Pediatrics: Official Publication of the American Academy of Pediatrics >Day-by-day postnatal survival in very low birth weight infants.
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Day-by-day postnatal survival in very low birth weight infants.

机译：出生体重很低的婴儿的日常产后存活率。

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OBJECTIVES: Postnatal survival rates of very low birth weight (VLBW) infants are well established for each birth weight or gestational age category. These figures do not differentiate viable infants who survive the first few days of life from extremely immature ones who die shortly after birth. This study aimed to develop standardized curves for day-by-day postnatal survival rates of VLBW infants. METHODS: National Inpatient Sample Database and its pediatrics-only subportion were analyzed for the years 1997-2004. Infants with birth weight <1500 g were included in the study. Infants were classified according to their birth weight into 4 groups: <500, 500 to 749, 750 to 999, and 1000 to 1499 g. Postnatal survival rates were calculated for each group at birth and at 1, 2, 3, 4 to 5, 6 to 7, 14, 21, 28, and >28 postnatal days. RESULTS: Overall survival for infants with birth weight <500 g was 8%. Those who lived through the first 3 days of life had a chance of survival up to 50%. Infants in the 500- to 749-g group had overall survival rate of 50% that increased to 70% if they survived through the third day and 80% by the end of the first week. There was no improvement in the overall survival of any birth weight category over the years of the study. CONCLUSIONS: VLBW infants who survive the first few postnatal days have a considerably better chance for life. We can predict postnatal survival chances for each birth weight category on a day-by-day basis until discharge.
机译：目的：对于每个出生体重或胎龄类别，已经很好地确定了极低出生体重（VLBW）婴儿的产后存活率。这些数字不能区分存活的婴儿和出生后不久死亡的极不成熟的婴儿。这项研究旨在为VLBW婴儿的每日产后存活率制定标准化曲线。方法：分析了1997年至2004年国家住院样本数据库及其仅用于儿科的子部分。出生体重<1500 g的婴儿被纳入研究。根据婴儿的出生体重将其分为4组：<500、500至749、750至999和1000至1499 g。计算每组在出生时以及出生后1、2、3、4至5、6至7、14、21、28和> 28天的产后存活率。结果：出生体重<500 g的婴儿的总生存率为8％。那些在生命的前三天中存活下来的人存活率高达50％。 500至749克组的婴儿总生存率为50％，如果到第三天生存，则增加到70％，到第一周结束时达到80％。在这项研究中，任何出生体重类别的总体生存率均没有改善。结论：出生后头几天幸存的VLBW婴儿有相当大的生命机会。我们可以逐日预测每个出生体重类别的产后生存机会，直到出院为止。

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