Which of the following medications would be prescribed most freequently to patients suffering from chronic atrial fibrillation?: (A) Lidocaine, (B) Bretylium, (C) Warfarin, (D) Adenosine
Answer is C. (Ref: KDT 6/e p604) Patients of chronic atrial fibrillation are at high risk of developing thromboembolism. Oral anticoagulants are most frequently advised drugs in these patients to decrease the risk of this adverse effect.