administration of tocainide 1200 mg + metoprolol 200 mg obtained a positive response in 9 of 12 patients , the modified lown score decreased significantly compared with placebo ( from 53 +/- 31 to 32 +/- 30 , p less than 0.01 ) and lown 4b arrhythmias were abolished in 2 of 5 cases .
C0085237
tocainide
C0003811
arrhythmias