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

Hyung Min Choi

doi:10.5468/kjog.2010.53.11.981

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

Original Article

Korean Journal of Obstetrics and Gynecology

Korean Journal of Obstetrics and Gynecology 2010; 53(11): 981-987.

Published online: 30 November 2010

DOI: https://doi.org/10.5468/kjog.2010.53.11.981

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

Hyung Min Choi, M.D., Ph.D.

Department of Obstetrics and Gynecology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.

Corresponding author (hhyae97@paik.ac.kr)

Received 21 August 2010 Revised 12 October 2010 Accepted 13 October 2010

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≤BMI<23), overweigh (23≤BMI<25), obese (≥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.

Keywords: Body mass index, Weight gain, During pregnancy, Perinatal outcome

Figures and Tables

Table 1

Patients characteristics by prepregnancy body mass index (BMI)

Values are presented as mean±standard deviation.

DM: diabetes mellitus, C/S: Cesarean section.

^*P<0.05.

Table 2

Weight gain during pregnancy by prepregnancy body mass index (BMI)

P<0.05.

Table 3

Adverse maternal, fetal outcomes by prepregnancy body mass index (BMI)

DM: diabetes mellitus, C/S: Cesarean section, CPD: cephalopelvic disproportion, LGA: large for gestational age, SGA: small for gestational age, RDS: respiratory distress syndrome, MAS: meconium aspiration syndrome.

^*P<0.05.

Table 4

Adverse maternal, fetal outcomes by weight gain during pregnancy

^*P<0.05.

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