twenty-two ( 59 % ) of 37 sotalol-treated patients , 11 in each group , reached the prospectively defined criterion of efficacy ( greater than or equal to 75 % arrhythmia reduction ) versus 2 ( 11 % ) of 19 placebo control patients ( p less than 0.001 ) .
C0037707
sotalol
C0003811
arrhythmia