all had failed to respond to conventional antiarrhythmic therapy and were therefore treated with oral amiodarone ( 1,600 to 2,000 mg/day for 2 weeks , then 800 to 1,200 mg/day for another 2 weeks with subsequent 200 to 600 mg/day maintenance doses ) .
C0003195
antiarrhythmic
C0002598
amiodarone