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Abstract
To examine cesarean morbidity and its predictors in the United States.We used 2000-2011 Nationwide Inpatient Sample data to identify cesarean deliveries and records with 12 potential cesarean complications, including placenta accreta. We estimated cesarean morbidity rates and rate changes during 2000-2011, and fitted Poisson regression models to assess the relative incidence of morbidity among repeat versus primary cesareans and explore its predictors.During 2000-2011, 76 in 1,000 cesareans (97 in 1,000 primary and 48 in 1,000 repeat cesareans) were accompanied by =1 of 12 complications. The unadjusted composite cesarean morbidity rate increased by 3.6% only among women with a primary cesarean (p<0.001), while the unadjusted rate of placenta accreta increased by 30.8% only among women with a repeat cesarean (p=0.025). The adjusted rate of overall composite cesarean morbidity decreased by 1% annually during 2000-2011 (p<0.001). Compared to women with a primary cesarean, those who underwent a repeat cesarean were half as likely (incidence rate ratio=0.50; 95%CI 0.49-0.50) to develop a complication, but 2.13 (95%CI 1.98-2.29) times more likely to have a placenta accreta diagnosis. Both cesarean morbidity and placenta accreta were positively associated with: age >30 years; non-Hispanic black race-ethnicity; presence of a chronic medical condition; and delivery in urban, teaching, or larger hospitals.Overall, cesarean morbidity declined modestly during 2000-2011, but placenta accreta became an increasingly important contributor to repeat cesarean morbidity. Clinicians should maintain a high index of suspicion for abnormal placentation and make adequate preparations for patients who need cesarean deliveries.
View details for DOI 10.1016/j.ajog.2015.05.002
View details for Web of Science ID 000360551700027
View details for PubMedID 25957019