to determine whether the addition of a type ia antiarrhythmic agent to therapy would improve outcome , 37 patients in whom ventricular tachyarrhythmia of a cycle length less than 350 msec was induced after 14 +/- 2 days of amiodarone were randomly assigned to therapy with amiodarone alone ( group 1 , 20 patients ) or amiodarone plus type ia agent ( group 2 , 17 patients ) .
C0003195
antiarrhythmic agent
C0002598
amiodarone