the new antiarrhythmic drug flecainide ( 2,5-bis- ( 2,2,2-trifluoroethoxy ) -n- ( 2-piperidylmethyl ) benzamide acetate ) increases action potential duration at 30 and 90 % repolarization , and functional refractory period in guinea pig papillary muscle up to 10 mumol/l , but shortens the action potential and decreases its amplitude at 30 mumol/l , without significant change in resting potential .
C0003195
antiarrhythmic drug
C0016229
flecainide