National Office for Maternal and Child Health Surveillance of China, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.
Department of Pediatrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.
PLoS One. 2019 Apr 11;14(4):e0213762. doi: 10.1371/journal.pone.0213762. eCollection 2019.
In preterm infants (i.e. the gestational age less than 37 weeks), postnatal growth remains a concern. This study used multicenter longitudinal data from China's Under 5 Child Nutrition and Health Surveillance System to investigate the postnatal growth in the weight and length of preterm infants. Gender-stratified differences in weight and length were assessed between preterm and term infants. 1221 preterm infants and 1221 matched term infants were included. The rates of growth in weight and length in preterm infants was greater than those in term infants, especially from the first to sixth month. The rates were higher in males compared to females in the first 3 months. The differences of weight and length between preterm and term infants decreased with increasing age, however, these measurements did not reach the level of their term peers until 12 months before adjusting for gestational age. The median values of weight and length were even larger in preterm infants in the first month after adjusting for gestational age.
在早产儿（即胎龄小于 37 周的婴儿）中，出生后的生长仍然是一个关注点。本研究使用了来自中国的 5 岁以下儿童营养与健康监测系统的多中心纵向数据，调查了早产儿体重和身长的出生后生长情况。评估了早产儿和足月儿的性别分层体重和身长差异。共纳入了 1221 名早产儿和 1221 名匹配的足月儿。早产儿体重和身长的增长率大于足月儿，尤其是在第一个月到第六个月。在前三个月，男性的增长率高于女性。早产儿和足月儿的体重和身长差异随着年龄的增长而减小，但在调整胎龄后，直到 12 个月前，这些测量值仍未达到足月儿的水平。即使在调整胎龄后，早产儿在出生后第一个月的体重和身长中位数仍较大。
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