]> 2026-07-31T07:51:18+00:00 WBR0995 0 en Verapamil Incorrect Calcium channel blockers as verapamil and diltiazem have not been shown to prevent recurrence of atrial fibrillation in patients with of paroxysmal atrial fibrillation. Diltiazem Incorrect Calcium channel blockers as verapamil and diltiazem have not been shown to prevent recurrence of atrial fibrillation in patients with of paroxysmal atrial fibrillation. Amiodarone Correct Amiodarone is the preferred class I anti arrhythmic drug for the maintenance of sinus rhythm. Ibutilide Incorrect Ibutilide is class III anti arrhythmic that is used for the acute termination of atrial fibrillation and not for long term use. Digoxin Incorrect Although digoxin is used as rate control medication, Amiodarone is the preferred class I anti arrhythmic drug for the maintenance of sinus rhythm. Emergency Room A 56 year-old female comes to ED complaining of sudden onset of dizziness and palpitation, and light headedness. These symptoms have been occurring frequently for the past 2 days, last for few minutes, and resolve spontaneously. She has a history of hypertension, and ischemic heart disease. Her current medications are daily aspirin, Metoprolol, and hydrochlorothiazide. On examination, her heart rate is 110 bpm and shows irregular irregularity, blood pressure is 130/80 mmHg, temperature is 37 C (98.6 F), and respiratory rate is 18/min. Her EKG shows atrial fibrillation, and her ventricular rate was controlled by IV diltiazem drip. Which of the following should be used to keep her sinus rhythm? C Cardiovascular 2020-10-28T02:18:44Z 2459150.5963426 WBR0995