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
The drug of choice for paroxysmal supraventricular tachycardia 
Select and explain. 
A. Verapamil, B. Digitalis, C. Quinidine, D. Diphynylhydantoin
A: Verapamil
Answer: A: Verapamil 
Explanation: Refer kDT 6/e p 519 Adenosine is a sho-actingmedication that is commonly used as a first-line drug to treat PSVT. Other treatment options for other atrial tachycardias include calcium channel blockers, beta blockers, digoxin, and amiodarone.