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Taiwan J Obstet Gynecol. 2013 Sep;52(3):341-6. doi: 10.1016/j.tjog.2013.05.001.

Following the 2009 American Institute of Medicine recommendations for normal body mass index and overweight women led to an increased risk of fetal macrosomia among Taiwanese women.

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  • 1Department of Obstetrics and Gynecology, Shin Kong Wu Ho Su Memorial Hospital, Taipei, Taiwan; Medical College, Fu Jen Catholic University, Taipei County, Taiwan.



This study aimed to investigate the risk of birth weights over 4000 g (macrosomia) in association with following the 2009 American Institute of Medicine (AIOM) recommendations.


Seventy-six nondiabetic women who delivered a singleton, term macrosomic fetus and 82 women who delivered a singleton, term fetus weighing <4000 g were analyzed retrospectively. The relationship between the risk of macrosomia and gestational weight gain in different periods of pregnancy was investigated using logistic regression.


The incidence of macrosomia from January 2008 to December 2009 was 1.8% among the Taiwanese women. The incidences of cesarean delivery (54.5% vs. 18.2%, p < 0.001) and blood loss >1000 mL at delivery (35.5% vs. 6.1%, p < 0.0001) were associated with macrosomia. The risk of macrosomia among normal weight women with gestational weight gain greater than 13 kg increased four-fold [odds ratio (OR) = 4.88; 95% confidence interval (CI) 1.84-12.90]. For overweight women with total gestational weight gain >11.5 kg, the risk of macrosomia increased nine-fold (OR = 9.63; 95% CI 1.76-52.74).


Macrosomia resulted in more cesarean deliveries and greater maternal blood loss at birth. In Taiwan, to prevent macrosomia, we suggest that the total gestational weight gain should be <11.5 kg among normal weight women and within 10 kg for overweight women.

Copyright © 2013. Published by Elsevier B.V.


Institute of Medicine; birth weight; body mass index; gestational weight gain; macrosomia

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