Digoxin Administration with Low Heart Rate

A nurse is preparing to administer a dose of digoxin to a patient with atrial fibrillation. The healthcare provider has prescribed 0.25 mg of digoxin to be given orally. Before administration, the nurse checks the patient’s heart rate, which is 58 beats per minute. The patient has a history of renal impairment. What is the priority action the nurse should take before administering the medication?