A nurse is admitting a client who has acute heart failure following myocardial infarction (MI). The nurse recognizes that which of the following prescriptions by the provider requires clarification?

Choice A rationale For a client in acute heart failure following a myocardial infarction, the administration of 0.9 percent sodium chloride is often contraindicated or requires extreme caution. Acute heart failure involves the heart's inability to pump effectively, leading to pulmonary congestion and systemic fluid volume excess. Adding isotonic saline, which remains in the extracellular space, can worsen pulmonary edema and increase the workload on the failing left ventricle. The nurse should clarify this order to prevent further respiratory distress and cardiac strain. Choice B rationale Bumetanide is a potent loop diuretic used to rapidly reduce fluid volume in patients with acute heart failure and pulmonary congestion. A dose of 1 mg IV bolus every 12 hours is a standard intervention aimed at promoting diuresis and reducing preload. This helps clear fluid from the lungs and improves oxygenation. The nurse would monitor urine output and electrolyte levels, specifically looking for hypokalemia, as loop diuretics cause the kidneys to excrete potassium along with water and sodium. Choice C rationale Monitoring serum potassium is a critical and appropriate action for a patient with heart failure and a recent myocardial infarction. Potassium levels must stay within 3.5 to 5.0 mEq/L to maintain cardiac electrical stability. Many heart failure treatments, including diuretics and ACE inhibitors, significantly alter potassium levels. In the context of an injured myocardium following an infarct, any electrolyte imbalance can trigger lethal arrhythmias. Therefore, obtaining baseline and serial potassium levels is a standard of care that does not require clarification. Choice D rationale Morphine sulfate is frequently used in the treatment of acute heart failure and myocardial infarction. Beyond its analgesic properties for chest pain, morphine acts as a vasodilator, which reduces both preload and afterload. This effect decreases the myocardial oxygen demand and helps alleviate the anxiety associated with dyspnea. A dose of 2 mg IV bolus every 2 hours as needed is a common and appropriate prescription to manage symptoms and improve hemodynamics in the acute phase of cardiac distress.