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目的确定正常孕妇孕期体重增加的模式，为孕期保健提供参考。方法收集１９９５年１月１日至１９９５年１２月３１日１５６２例孕产妇的资料，并对无妊娠合并症及新生儿出生体重在２５００～３９９９ｇ的１１０５９例次产前检查资料进行分析。结果产妇平均年龄２６．４９±３．０２岁；平均身高１５８．６９±４．８５ｃｍ。根据孕前体质指数（ＢＭＩ）可将孕妇分为低ＢＭＩ（＜１６．７５）、正常ＢＭＩ（１６．７５～２３．７１）及高ＢＭＩ（＞２３．７１）３类。各类孕妇的ＢＭＩ随孕周增加而递增，尤以正常ＢＭＩ孕妇最为明显；３类孕妇孕期ＢＭＩ增加分别为８．０７、５．３７、３．８２。结论ＢＭＩ较单纯体重增加更能反映孕妇体重改变的情况
Objective To determine the pattern of weight gain in normal pregnant women during pregnancy and provide reference for health care during pregnancy. Methods A total of 1562 pregnant women were collected from January 1, 1995 to December 31, 1995. The data of 11 059 antenatal examinations without pregnancy complications and newborns with birth weights between 2500 and 3999g were analyzed. Results The average age of maternal age was 26.49 ± 3.02 years; the average height was 158.69 ± 4.85cm. According to pre-pregnancy body mass index (BMI), pregnant women can be divided into three categories: low BMI (<16.75), normal BMI (16.75-23.71) and high BMI (> 23.71). The BMIs of all kinds of pregnant women increased with gestational weeks increased, especially in normal BMI pregnant women; The increase of BMI in three kinds of pregnant women were 8.07,5.37,3.82 respectively. Conclusions BMI can better reflect the weight change of pregnant women than simple weight gain