This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'Arrhythmias refractory to the treatment of lignocaine can be treated by \nSelect and explain. \nA. Sotalol, B. Diltiazem, C. Amiodarone, D. Quinidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Katzung 11e p 241. Amiodarone is an antiarrhythmic medication used to treat and prevent a number of types of irregular heabeats. This includes ventricular tachycardia, ventricular fibrillation, and wide complex tachycardia, as well as atrial fibrillation and paroxysmal supraventricular tachycardia.', 'role': 'assistant'}]