A nurse is reviewing a provider's admission orders for a client who has acute heart failure. For which of the following prescriptions should the nurse obtain clarification?

A. Laboratory testing of serum potassium upon admission: Potassium level must be known on admission for acute heart failure because diuretics and ACE inhibitors/ARBs can affect K⁺ and hypokalemia predisposes to arrhythmias. B. Ambulate three times daily: Ambulation might be unsafe for a client with acute, unstable heart failure (dyspnea, hypoxia, hemodynamic instability). Activity orders should reflect current stability; early mobilization is good when stable but this preset ambulation order may be inappropriate until the patient is assessed and stabilized. C. Bumetanide 1 mg IV bolus every 12 hr: Bumetanide (a loop diuretic) IV is an appropriate acute HF medication to reduce volume overload. Dosing and frequency depend on response and renal function, but 1 mg IV q12h is within typical therapeutic practice and not an automatic clarification. D. Morphine sulfate 2 mg IV bolus every 2 hr PRN pain: Morphine can relieve anxiety and reduce preload/afterload in some acute HF/AMI situations but must be used cautiously (respiratory depression, hypotension). The PRN order is reasonable if used with monitoring; it does not automatically require clarification unless the client has contraindications (respiratory depression, low BP).