In the ICU, a patient with acute decompensated heart failure reports severe dyspnea, anxiety, tachypnea, and tachycardia. Among the orders, the nurse’s priority action is to:

• A. Give IV morphine sulfate
• B. Give IV diazepam
• C. Increase Nitroglycerine infusion
• D. Increase dopamine infusion

Answer: (A)

In acute decompensated heart failure with pulmonary edema, the immediate goal is to relieve severe dyspnea and anxiety and to reduce the heart’s filling pressures that are driving pulmonary congestion. IV morphine sulfate is prioritised because it has rapid effects on both symptoms and hemodynamics: it causes venodilation, which lowers venous return and left-sided filling pressures, helping to decompress the pulmonary vasculature, while its anxiolytic and mild sedative effects reduce the patient’s work of breathing and oxygen demand. This combination often produces prompt improvement in breathing and comfort, which is the fastest way to stabilize the patient’s status.

While other options can play a role, they are not the first-line for immediate relief in this scenario. Anxiolysis with a benzodiazepine could lessen agitation but risks respiratory depression and further hypoventilation. Increasing nitroglycerin can decrease preload and afterload, aiding hemodynamics, but it requires careful blood pressure monitoring and may not address the patient's acute distress as quickly as morphine. Increasing dopamine would raise heart rate and contractility, potentially increasing myocardial oxygen demand and worsening pulmonary edema. The priority is to rapidly relieve dyspnea and anxiety and reduce preload, making IV morphine the best initial action. Monitor for hypotension and respiratory status after administration.