Continuous positive airway pressure treatment of obstructive sleep apnea and hypertensive complications in high-risk pregnancy.

Purpose: To evaluate whether or not continuous positive airway pressure (CPAP) treatment in pregnancies complicated by obstructive sleep apnea (OSA) is associated with a decrease in hypertensive disorders of pregnancy.

Methods: This was a retrospective cohort study of perinatal outcomes in women who underwent objective OSA testing and treatment as part of routine clinical care during pregnancy. Where diagnostic criteria for OSA were reached (respiratory event index (REI) ≥ 5 events per hour), patients were offered CPAP therapy.