Nifedipine Effectiveness in Treating Hypertension Disorders of Pregnancy: A Literature Review Riza Salsabila Fitri1, Meity Ardiana2,3* Abstract Hypertension Disorders of Pregnancy (HDP), defined by systolic blood pressure ≥140 mmHg or diastolic ≥90 mmHg, is a leading cause of maternal and fetal mortality, with severe cases marked by systolic ≥160 mmHg