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J Matern Fetal Med. 1997 Mar-Apr;6(2):99-102.

Labor induction with a prenatal diagnosis of fetal macrosomia.

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1
Department of Obstetrics and Gynecology, University of Vermont, Burlington, USA.

Abstract

Since our institution has a low cesarean rate (14%), it was our hypothesis that the rate of cesarean delivery in patients who underwent induction for macrosomia would be similar to the cesarean rate in patients with similar birth weights who entered labor spontaneously. A retrospective analysis of cases seen from December 1993 to July 1995 revealed 53 nondiabetic patients who underwent induction for fetal macrosomia. These study patients were matched to the next nondiabetic patient delivering a child of equal or greater birth weight who entered labor spontaneously. Maternal demographics, labor characteristics, and neonatal outcome data were reviewed. There were no differences between the induction and spontaneous labor groups in maternal age, gestational age, rate of nulliparity, incidence of shoulder dystocia, Apgar scores, or vaginal birth after prior cesarean delivery. The cesarean delivery rate was higher in the induction group when compared to the spontaneous labor group (36% vs. 17%, P < 0.05) despite a lower birth weight in the induction group (4,102 +/- 374 g vs. 349 g, P < 0.05). Regional analgesia was administered more frequently in the induction group (38% vs. 53%, P < 0.05). An increased risk of cesarean delivery was observed in subjects undergoing induction for the indication of fetal macrosomia. These data support a plan of expectant management when fetal macrosomia is suspected.

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