Drug used for atrial fibrillation and atrial flutter is: (A) Verapamil, (B) Digitalis, (C) Quinidine, (D) Diphenylhydantoin
Answer is B. For AF, digoxin can be used- it decreases ventricular rate in AF Verapamil decreases conduction velocity and increases the refractory period of the AV node and so used in PSVT. REF.Essentials of Pharmacology KD Tripathi 8th ed.