Pregnancy Characteristics of Macrosomic Birth
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2010-01-06
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Vajira Medical Journal
Abstract
Abstract Pregnancy Characteristics of Macrosomic Birth Waralak Yamasmit MD Department of Obstetrics and Gynecology, BMA Medical College and Vajira Hospital Objective: To determine the pregnancy characteristics of macrosomic birth. Study design: Descriptive study. Subjects: Two hundred and sixty one pregnant women who delivered infant birth weight of ≥ 4,000 g. at BMA Medical College and Vajira Hospital between January 2005 and December 2007. Methods: Mothers' demographic data, mode of delivery, maternal and fetal complications were collected from medical records and computer data base. Main outcome measures: Maternal age, parity, gestational age, body mass index, overt or gestational diabetes, mode of delivery, maternal and fetal complications. Results: The rate of macrosomic birth during the study period was 2.1%. The mean maternal age was 29.6 ± 6.0 years and 63.2% of the subjects were multiparity. Overt or gestational diabetes was found in 17.6%. Ninety-seven percent of pregnant women were obese at the time of delivery or last prenatal care. Thirty-seven percent of macrosomic deliveries occurred after 40 weeks of gestation. The cesarean section rate was 53.3%. Postpartum hemorrhage in cases with cesarean section was documented 23 times higher than those in women with vaginal delivery. Shoulder dystocia and Erb's palsy were found in 2.7% and 0.8% respectively. Conclusion: Gestational diabetes and maternal obesity were the main pregnancy characteristics of macrosomic birth. Mode of delivery in fetuses with estimated weight ≥ 4,000 g should be carefully evaluated. Vajira Med J 2009 ; 53 : 25 - 32
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Vajira Medical Journal; Vol. 53 No. 1 January - April 2009; 25-32