ObjectiveTo investigate the effect of gestational weight gain on fetal growth and pregnancy outcome in pregnant women with gestational diabetes mellitus (GDM). MethodsA total of 150 pregnant women with GDM and their newborns admitted to our hospital from June to December 2018 were selected as the research objects. According to the weight gain of pregnant women during pregnancy, pregnant women and their newborns were divided into underweight gain group, normal weight gain group, and excessive weight gain group. The normal growth rate of fetal abdomen circumference, the Apgar score of the newborns and the incidence of low birth weight infants and macrosomia were compared between the three groups. ResultsAt different gestational weeks, the normal rate of fetal abdomen circumference in the three groups in a descending order was the normal weight gain group, excessive weight gain group and underweight gain group, with statistically significant difference (P＜0.05). The incidence of low birth weight infants in the underweight gain group was significantly higher than that in the excessive weight gain group and the normal weight gain group, with statistically significant difference (P＜0.05). The incidence of macrosomia in the excessive weight gain group was significant higher than that in the normal weight gain group and underweight gain group, with statistically significant difference (P＜0.05). The Apgar score in the three groups in a descending order was the normal weight gain group, underweight gain group, and excessive weight gain group, with statistically significant difference (P＜0.05). ConclusionThe gestational weight gain of pregnant women with gestational diabetes mellitus is closely related to their fetal abdomen circumference and pregnancy outcomes. Maintaining a suitable gestational weight gain of pregnant women is of great significance in promoting normal fetal development and decreasing the incidence of adverse pregnancy outcome.

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