Postpartum Preeclampsia Early Detection and Treatment: Nepal Pilot Study

Inclusion Criteria: * Pregnant patients ≥ 36 weeks gestation without major fetal anomalies * Age ≥ 18 years * Admitted for labor at Dhulikhel Hospital, or intend to deliver at Dhulikhel Hospital * At risk for preeclampsia, using the Clinical Risk Assessment for Preeclampsia according to ACOG and USPSTF * 1 or more high risk factors: * History of preeclampsia * Type 1 or 2 diabetes * Multifetal gestation? * Renal disease * Autoimmune disease * 2 or more moderate risk factors: * Nulliparity * BMI \> 30 * First-degree relative with a history of preeclampsia * African American race * Low socioeconomic status * Age \> 35 years * History of low birthweight or small for gestational age * Previous adverse pregnancy outcome * Interpregnancy interval \> 10 years Exclusion Criteria: * Antenatal hypertensive disorder of pregnancy diagnosis, including gestational hypertension, preeclampsia, eclampsia, or HELLP syndrome, according to ACOG guidelines * Chronic hypertension, according to ACOG guidelines * Known allergy or contraindication to nifedipine * Inability or unwillingness to provide informed consent * Two or more blood pressures with an SBP ≥140 or DBP ≥90 after consent and prior to sFlt-1/PlGF testing (screen failure criteria)