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To estimate whether nonsteroidal antiinflammatory drugs (NSAIDs) are associated with persistent postpartum hypertension in a cohort of women with preeclampsia and severe features.We conducted a retrospective cohort study at a single, tertiary center from January 2013 to December 2015. All women diagnosed with severe preeclampsia who remained hypertensive for greater than 24 hours after delivery were included. The primary outcome was the rate of persistent postpartum hypertension, defined as systolic blood pressure 150 mm Hg or greater or diastolic 100 mm Hg or greater (or both), on two occasions, at least 4 hours apart. Secondary outcomes included severe maternal morbidity: pulmonary edema, renal dysfunction, stroke, eclampsia, and intensive care unit admission. Additional outcomes included length of postpartum hospital stay, receipt of narcotics, and hospital readmission. Multivariable logistic regression was performed to adjust for confounders. Adjusted odds ratios (ORs) are reported for applicable study outcomes.Of the 399 women with severe preeclampsia, 324 (81%) remained hypertensive 24 hours after delivery. Two hundred forty-three (75%) received NSAIDs (either ibuprofen or ketorolac) and 81 (25%) did not. After multivariable logistic regression, the likelihood of reaching a blood pressure of 150 mm Hg systolic or 100 mm Hg diastolic (or both), on two occasions, at least 4 hours apart, was similar between those who received NSAIDs compared with those who did not (70% compared with 73%; adjusted OR 1.1, 95% CI 0.6–2.0). Similarly, puerperal occurrence of pulmonary edema (3% compared with 10%; OR 4.4, 95% CI 1.5–13.1), renal dysfunction (5% compared with 8%; OR 1.7, 95% CI 0.6–4.8), eclampsia (1% compared with 0%; P=.34), or intensive care unit admission (3% compared with 8%; OR 2.4, 95% CI 0.8–7.1) was similar between the groups. There were no differences in the rate of narcotic use (89% compared with 75%; adjusted OR 0.6 95% CI 0.18–1.70).In this cohort of women with preeclampsia and severe features before delivery, NSAIDs were not associated with increased rates of persistent postpartum hypertension.