Question category: Cardiology
A previous fit and healthy 45 year old gentleman presents to A and E after sudden onset of palpitations following a night out. When you examine the patient you find his pulse to be 140 bpm and irregular. His blood pressure is 130/80mmHg and his heart sounds are normal and chest is clear. An ECG confirms your suspicion of Atrial Fibrillation. What drug should be used for chemical cardioversion?