The relationship between gestational weight gain and pregnancy outcomes of pregnant women with normal body index.

Objective: Summary the gestational weight gain of pregnant women with normal body index who were examined and delivered in our hospital from Jan 2009 to Jan 2010,analyze the pregnancy outcomes of these women according to different weight gain,then get the relationship between gestational weight gain and pregnancy outcomes.Methods:1382 pregnant women with normal body index who delivered a singleton infant in Jan 2009-Jan 2010 were concluded.Women were grouped in three categories according to the 2009 Institute of Medicine(IOM)guidelines.Obstetric and neonatal outcomes were evaluated.Results:The ratio of low weight gain,normal weight and excessive weight gain were 11.43%,37.63%,50.94%.The gestational weight gain was associated with mother′s educational degree and occupation.The risks for cesarean delivery,pregnancy-induced hypertension(PIH),macrosomia and low-birth weight infant had significant differences among three groups(P0.05),but the risks of getational diabetes(GDM) and postpartum hemorrhage had no significant differences(P0.05).Conclusion: Whatever their body index were,pregnant women who had excessive weight gain or low weight gain were associated with increased risks of adverse pregnancy outcomes,so providing proper recommendations for gestational weight gain has significant value.