This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'Drug of choice for maintenance in PSVT is \nSelect and explain. \nA. Amiodarone, B. Lignocaine, C. Verapamil, D. Adenosine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Adesosine (3-12mg rapidly IV in incremental doses until tachycardia stops) or verapamil(5mg IV over 1min) will restore sinus rhythm in most cases. Reference : Harrison 20th edition pg 1432', 'role': 'assistant'}]