Korean J Obstet Gynecol.  2010 Nov;53(11):981-987. 10.5468/kjog.2010.53.11.981.

Perinatal outcomes associated with prepregnancy body mass index and weight gain during pregnancy

Affiliations
  • 1Department of Obstetrics and Gynecology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea. hhyae97@paik.ac.kr

Abstract


OBJECTIVE
To examine the association between prepregnancy body mass index (BMI), gestational weight gain and perinatal outcomes.
METHODS
The data of women who delivered at term in our institute from January 2005 to December 2007 were analyzed retrospectively. Four categories of prepregnancy BMI and three categories of gestational weight gain were constructed and used maternal, neonatal outcomes.
RESULTS
This study included 225 women with term delivered in our institute. According to prepregnancy BMI categories, lean (<18.5), normal (18.5< or =BMI<23), overweigh (23< or =BMI<25), obese (> or =25) were 35, 132, 31, 27, respectively. According to gestational weight gain categories, lean (<12 kg), normal (12~13.5 kg), overweight (>13.5 kg) were 73, 44, 108, respectively. Gestational weight gain above guidelines was common in low prepregnancy weight group, this difference was statistically significant. In women with increased prepregnancy BMI was associated with increased risk of gestational diabetes mellitus, cesarean section rate, and large for gestational age (LGA) (P<0.05). In women with overweight gain during pregnancy was associated with increased cesarean section rate and LGA (P<0.05).
CONCLUSION
Increased prepregnancy BMI was associated with increased gestational diabetes mellitus, cesarean section rate, and LGA. Also excessive weight gain during pregnancy was associated with increased cesarean section rate and LGA.

Keyword

Body mass index; Weight gain; During pregnancy; Perinatal outcome
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