Maternal outcomes associated with planned vaginal versus planned primary cesarean delivery.

We compared maternal morbidity between planned vaginal and planned cesarean delivery. A university hospital's database was queried for delivery outcomes. Between 1995 and 2005, 26,356 deliveries occurred. Subjects were divided into two groups: planned vaginal and planned cesarean delivery. This was based on intent to deliver vaginally or by cesarean, despite actual route of delivery. Planned vaginal delivery included successful vaginal delivery and labored cesarean delivery intended for vaginal delivery. Planned cesarean delivery included unlabored and labored cesarean delivery and vaginal delivery intended for cesarean. Chart abstraction confirmed the delivery plan. Primary outcomes were chorioamnionitis, postpartum hemorrhage, and transfusion. Secondary outcomes were also measured. A subanalysis compared actual vaginal delivery, labored cesarean delivery, and unlabored cesarean delivery. There were 3868 planned vaginal deliveries and 180 planned cesarean deliveries. Planned cesarean delivery had less chorioamnionitis (2.2% versus 17.2%), postpartum hemorrhage (1.1% versus 6.0%), uterine atony (0.6% versus 6.4%), and prolonged rupture of membranes (2.2% versus 17.5%) but a longer hospital stay (3.2 versus 2.6 days). There were no differences in transfusion rates. For healthy primiparous women, planned cesarean delivery decreases certain morbidities. Labored cesarean delivery had increased risks compared with both vaginal delivery and unlabored cesarean delivery.