Journal
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
Volume 40, Issue 4, Pages 1002-1008Publisher
WILEY
DOI: 10.1111/jog.12307
Keywords
cesarean section; pregnant women; Singapore; size for gestational age; weight gain
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Funding
- KK Research Center
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AimTo define the optimal gestational weight gain (GWG) for the multiethnic Singaporean population. MethodsData from 1529 live singleton deliveries was analyzed. A multinomial logistic regression analysis, with GWG as the predictor, was conducted to determine the lowest aggregated risk of a composite perinatal outcome, stratified by Asia-specific body mass index (BMI) categories. The composite perinatal outcome, based on a combination of delivery type (cesarean section [CS], vaginal delivery [VD]) and size for gestational age (small [SGA], appropriate [AGA], large [LGA]), had six categories: (i) VD with LGA; (ii) VD with SGA; (iii) CS with AGA; (iv) CS with SGA; (v) CS with LGA; (vi) and VD with AGA. The last was considered as the normal' reference category. In each BMI category, the GWG value corresponding to the lowest aggregated risk was defined as the optimal GWG, and the GWG values at which the aggregated risk did not exceed a 5% increase from the lowest aggregated risk were defined as the margins of the optimal GWG range. ResultsThe optimal GWG by pre-pregnancy BMI category, was 19.5kg (range, 12.9 to 23.9) for underweight, 13.7kg (7.7 to 18.8) for normal weight, 7.9kg (2.6 to 14.0) for overweight and 1.8kg (-5.0 to 7.0) for obese. ConclusionThe results of this study, the first to determine optimal GWG in the multiethnic Singaporean population, concur with the Institute of Medicine (IOM) guidelines in that GWG among Asian women who are heavier prior to pregnancy, especially those who are obese, should be lower. However, the optimal GWG for underweight and obese women was outside the IOM recommended range.
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