a 69-year-old man , who had undergone an aortic-valve replacement for aortic regurgitation and aortoplasty for an aortic aneurysm with re-implantation of the coronary arteries , was given flecainide 100 mg twice daily during the rehabilitation period because of atrial fibrillation and multiple ventricular extrasystoles ( lown 4b ) .
C0016229
flecainide
C0004238
atrial fibrillation