atrial pacing of nadolol-treated animals at heart rates comparable with those of the control group reversed the beneficial effects of nadolol on the development of ventricular arrhythmias and ventricular fibrillation ( 70 % ; p = 0.07 vs nadolol ; p = 0.21 vs control , respectively ) .
C0003811
arrhythmias
C0042510
ventricular fibrillation