A client has been diagnosed with a life-threatening recurrent ventricular fibrillation that has not responded to other medications or defibrillation. Which of the following does the nurse anticipate will be prescribed next?

A. Quinidine is used for other types of arrhythmias but is not typically the first choice for recurrent ventricular fibrillation that has not responded to other treatments. B. Digoxin is used to manage heart failure and atrial fibrillation but is not effective for ventricular fibrillation. C. Atropine is used for bradycardia, not ventricular fibrillation. D. Amiodarone is a potent antiarrhythmic agent used for life-threatening ventricular arrhythmias, including ventricular fibrillation, particularly when other treatments have failed.