This document provides a checklist for treating acute-onset, severe hypertension during pregnancy or postpartum. It outlines four steps: 1) diagnose severe hypertension based on blood pressure thresholds, 2) call for help and assign nursing roles, 3) treat by administering anti-hypertensive medications like labetalol, hydralazine, or nifedipine and monitoring closely, 4) provide seizure prophylaxis by assessing reflexes, magnesium levels, and respiratory rate. The goal is emergent therapy for acute hypertension to prevent maternal and fetal complications.