During prenatal care, a nurse notices a patient exhibiting signs of hypertensive disorders. Which intervention is most critical for the nurse to prioritize?

Hypertensive disorders in pregnancy involve abnormal placentation, endothelial dysfunction, and increased systemic vascular resistance, leading to reduced uteroplacental perfusion, organ ischemia, and risk of progression to preeclampsia and eclampsia with potential maternal and fetal complications such as seizures, placental abruption, and intrauterine growth restriction. Rationale: A. A high-sodium diet increases fluid retention and expands intravascular volume, worsening hypertension and vascular stress. It further elevates systemic vascular resistance and increases risk of maternal complications. Therefore, it is contraindicated in hypertensive pregnancy management. B. Regular blood pressure monitoring is essential for early detection of worsening hypertension and progression to severe preeclampsia. Timely reporting allows rapid intervention to prevent complications such as seizures and organ damage. This is the most critical ongoing nursing priority. C. Bed rest may reduce physical stress, but evidence does not support it as a definitive intervention for hypertensive disorders in pregnancy. Excessive restriction may also increase thromboembolic risk. It is supportive but not the primary priority action. D. Increasing fluid intake does not improve uteroplacental perfusion and may worsen fluid overload in preeclampsia. Fluid management must be carefully controlled based on clinical status. Excess intake does not address the underlying vascular pathology.