Oral Combined Hydrochlorothiazide/Lisinopril Versus Oral Nifedipine for Postpartum Hypertension

Inclusion Criteria: * Postpartum women at ≥ 18 years of age * Postpartum diagnosis of persistent hypertension (2 measurements of Systolic BP ≥150 and/or diastolic BP ≥ 100 or systolic BP ≥140 and/or diastolic BP ≥ 90 for people with diabetes) requiring an oral medication based on the ACOG criteria or * Hypertensive disorder of pregnancy diagnosed antepartum or intrapartum requiring blood pressure medication in the postpartum * Chronic hypertension requiring blood pressure medication postpartum Exclusion Criteria: * Urine output \< 30 cc/h prior to screening for eligibility * Creatinine \> 1.4 during current admission * End-stage renal disease * Hypersensitivity to ACE inhibitors or sulfa drugs * Idiopathic/hereditary angioedema * Hyperkalemia (serum potassium \>5 mEq/L) during current admission * Pulmonary edema