this placebo-controlled , double-blind , longitudinal crossover study compares the efficacy of disopyramide and ethmozine , a new investigational drug , in suppressing frequent ( 40 or more per hour ) ventricular premature depolarizations ( vpds ) in 27 patients completing a 37 day protocol .
C0012702
disopyramide
C0151636
ventricular premature depolarizations