A nurse evaluates prescriptions for a patient with chronic atrial fibrillation. Which medication would the nurse expect to find on this patient's medication administration record to prevent a common complication of this condition

Rationale: A. Atropine (Sal Tropine) is incorrect because atropine is used to increase heart rate in bradycardia, not to prevent complications of atrial fibrillation. It does not reduce the risk of stroke or thromboembolism, which are the primary concerns in AFib. B. Sotalol (Betapace) is incorrect because sotalol is an antiarrhythmic used to control heart rhythm or rate. While it may help manage AFib symptoms, it does not prevent thromboembolic complications, which are the most common and dangerous outcomes. C. Warfarin (Coumadin) is correct because chronic atrial fibrillation increases the risk of blood clots forming in the atria, which can lead to stroke. Warfarin is an anticoagulant that reduces this risk by preventing clot formation. Nurses should monitor INR levels, assess for bleeding, and educate patients on dietary and medication interactions to ensure safe and effective anticoagulation. D. Lidocaine (Xylocaine) is incorrect because lidocaine is primarily used as an antiarrhythmic for ventricular arrhythmias, not for atrial fibrillation or stroke prevention. It does not address the risk of thromboembolism associated with AFib.