龙翔, 彭咏梅, 浦争, 沈春兰, 周洁. 低出生体重儿0~24月龄追赶性生长中体质量指数的变化[J]. 上海预防医学, 2020, 32(7): 535-538. DOI: 10.19428/j.cnki.sjpm.2020.19864
引用本文: 龙翔, 彭咏梅, 浦争, 沈春兰, 周洁. 低出生体重儿0~24月龄追赶性生长中体质量指数的变化[J]. 上海预防医学, 2020, 32(7): 535-538. DOI: 10.19428/j.cnki.sjpm.2020.19864
LONG Xiang, PENG Yong-mei, PU Zheng, SHEN Chun-lan, ZHOU Jie. Change of BMI in catch-up growth of low birth weight infants aged 0-24 months[J]. Shanghai Journal of Preventive Medicine, 2020, 32(7): 535-538. DOI: 10.19428/j.cnki.sjpm.2020.19864
Citation: LONG Xiang, PENG Yong-mei, PU Zheng, SHEN Chun-lan, ZHOU Jie. Change of BMI in catch-up growth of low birth weight infants aged 0-24 months[J]. Shanghai Journal of Preventive Medicine, 2020, 32(7): 535-538. DOI: 10.19428/j.cnki.sjpm.2020.19864

低出生体重儿0~24月龄追赶性生长中体质量指数的变化

Change of BMI in catch-up growth of low birth weight infants aged 0-24 months

  • 摘要:
    目的研究低出生体重儿在生后24月龄内发生追赶性生长时其体质量指数(body mass index,BMI)的变化规律。
    方法采用出生队列方法,选择嘉定区2016年1月—2016年12月出生的户籍和常住儿童中自愿加入0~24月龄随访研究中的低出生体重儿(出生体重 < 2 500 g)126人,根据出生体重和孕周分为早产适于胎龄儿组73人、足月小于胎龄儿组53人; 选择同地区、孕周37~41周、出生体重2 500~3 999 g 105人为对照组。比较3组婴幼儿生后0~24月龄间BMI均数、标准差的差异,分析男女婴幼儿在0~24月龄间BMI曲线的变化。
    结果① 共纳入231人,男童111人,女童120人; ② 2组低出生体重儿在出生和2月龄阶段BMI均值均低于对照组,早产适于胎龄儿从4月龄开始BMI与对照组无明显差异,但是足月小于胎龄儿组BMI指数在4~18月龄间始终低于早产适于胎龄儿组别和对照组,差异有统计学意义(P < 0.05);③ 3组婴幼儿BMI指数在生后均呈现快速上升,在4~6月龄时达高峰,7~9月龄BMI数值开始下降,早产适于胎龄儿在6月龄BMI的比较中便赶上正常体重儿童的BMI值,而足月小于胎龄儿一直到24月龄仍与正常体重儿童的BMI值有差异,但是3组间的差值有缩小。男女性别间BMI上升曲线相似,但早产适于胎龄儿女童组别高峰值延长。
    结论低出生体重儿的BMI存在追赶性增长现象,其后期变化趋势与正常出生体重儿相似。在儿童早期生长发育阶段,应给予低出生体重儿喂养方面的合理指导和干预。

     

    Abstract:
    ObjectiveTo investigate the changes and characteristics of body mass index (BMI) of low birth weight infants during catch-up growth within 24 months of life.
    MethodsUsing the birth cohort method, 126 low birth weight children (birth weight less than 2 500 g) among the registered and permanent born in Jiading District from January 2016 to December 2016, were enrolled in the study voluntarily.According to the calculation of birth weight and gestational week, 73 children were included in the preterm appropriate for gestational age group and 53 in the full-term small for gestational age group.105 children with gestational age of 37-41 weeks and birth weight of 2 500-3 999 g were included as the control group.The differences of BMI mean and standard deviation were compared between 0-24 months old in three groups, and the changes of BMI curve analyzed between 0-24 months old in boys and girls.
    Results① There were 231 infants investigated, who were composed by 111 boys and 120 girls; ② The BMI of the two groups of low birth weight infants at birth and at 2 months old were lower than those of the control group.There was no significant difference between the BMI of preterm appropriate for gestational age group and the control group since the age of 4 months.The BMI of the term small for gestational age group was less than the other two groups between 4 and 18 months of age, the difference was statistically significant (P < 0.05);③ The BMI index of the three groups showed a rapid rise after birth.It peaked at 4-6 months of age, and the BMI value of 7-9 months of age began to fall.Preterm appropriate for gestational age group infants caught up with the BMI of normal-weight infants at 6 months of age.Until the age of 24 months, the BMI of small for gestational age group was still different from normal weight infants, but the difference between the three groups decreased.The rising curves of BMI between boys and girls were similar, but the peak of preterm appropriate for gestational age group girls was lengthened.
    ConclusionThere is a significant catch-up growth for low birth weight infants aged 0-24 months, having a similar trend of normal infants in the late stage.It is necessary to deliver proper breeding education and intervention to the low birth weight infants in their early stages.

     

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