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Comparative Study
. 2013 Apr;121(4):789-797.
doi: 10.1097/AOG.0b013e3182878b43.

Consequences of a primary elective cesarean delivery across the reproductive life

Emily S Miller  1 , Katherine Hahn, William A Grobman; Society for Maternal-Fetal Medicine Health Policy Committee
Affiliations
Comparative Study

Consequences of a primary elective cesarean delivery across the reproductive life

Emily S Miller et al. Obstet Gynecol. 2013 Apr.

Abstract

Objective: To estimate cumulative risks of morbidity associated with the choice of elective cesarean delivery for a first delivery.

Methods: A decision analytic model was designed to compare major adverse outcomes across a woman's reproductive life associated with the choice of elective cesarean delivery compared with a trial of labor at a first delivery. Maternal outcomes assessed included maternal transfusion, hysterectomy, thromboembolism, operative injury, and death. Neonatal outcomes assessed included cerebral palsy and permanent brachial plexus palsy in the offspring.

Results: Choosing an initial cesarean delivery resulted in a 0.3% increased risk of a major adverse maternal outcome in the first pregnancy. In each subsequent pregnancy, the difference in composite maternal morbidity increased such that by the fourth pregnancy, the cumulative risk of a major adverse maternal outcome was nearly 10% in the elective primary cesarean delivery group, three times higher than women who initially underwent a trial of labor. Although the choice of an initial cesarean delivery resulted in 2.4 and 0.41 fewer cases of cerebral palsy and brachial plexus palsy, respectively, per 10,000 women in the first pregnancy, by a fourth pregnancy, the risk of a adverse neonatal outcome was higher among offspring of women who had chosen the initial elective cesarean delivery (0.368% compared with 0.363%).

Conclusion: Maternal morbidity associated with the choice of primary elective cesarean delivery increases in each subsequent pregnancy and is greater in magnitude than that associated with the choice of a trial of labor. These increased risks are not offset by a substantive reduction in the risk of neonatal morbidity.

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