Maternal weight gain rate in the second trimester are associated with birth weight and length of gestation
Maternal weight gain rate in the second trimester are associated with birth weight and length of gestation
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DOI：
10.1159/000095286
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发表时间：
2007-01-01
影响因子：
2.1
通讯作者：
Miyazaki, Fumiko
中科院分区：
文献类型：
--
作者：
Sekiya, Nobuko;Anai, Takanobu;Miyazaki, Fumiko
背景：妊娠期低总体重增加已被广泛认为是小于胎龄儿和早产的有效危险因素。然而，体重增重率对出生体重和孕期长度的影响并不明显。方法：采用Logistic回归分析和皮尔逊相关系数检验，对472例足月经阴道分娩无并发症的产妇资料进行回顾性分析。结果：孕前体重不足和母体总体重增加低是小于胎龄儿和短孕儿的显著独立预测因素。孕前体重与出生体重、孕周呈显著正相关(r=0.0001.18，p<0.0 1；r=0.10，p=0.0 4)，总体重增加与出生体重、身长呈显著正相关(r=0.17，p=0.0003；r=0.11，p=0.0 3)。孕中期母体增重率与出生体重和孕长呈显著正相关(r=0.32，p=0.005；r=0.40，p=0.0003)，而早孕期和晚孕期未发现这种相关性。结论：孕中期是孕母体重增加对出生体重和身长影响最敏感的时期。版权所有(C)2007 S.Karger AG，巴塞尔。
Background: Low total weight gain during pregnancy has been widely accepted as a valid risk factor for small-for-gestational-age infants and pre-term births. However, it is not obvious in which trimester the weight gain rate most affects birth weight and length of gestation. Method: Using logistic regression analysis and Pearson's correlation coefficient test, data from 472 women who had vaginally delivered an infant at term without any complications were analyzed retrospectively. Results: Pre-pregnancy underweight and low total maternal weight gain were significant independent predictors of small-for-gestational-age infants and shortened gestations. Pre-pregnancy weight was significantly related to the birth weight and length of gestation ( r = 0.18, p < 0.0001; r = 0.10, p = 0.04, respectively), and total weight gain was also significantly related to those ( r = 0.17, p = 0.0003; r = 0.11, p = 0.03, respectively). Significant correlations between maternal weight gain rate in the second trimester and the birth weight and length of gestation were found ( r = 0.32, p = 0.005; r = 0.40, p = 0.0003, respectively), while such correlations were not found in the first or third trimester. Conclusion: The most sensitive period of maternal weight gain for the birth weight and length of gestation was the second trimester. Copyright (c) 2007 S. Karger AG, Basel.