the average percent reduction in isoproterenol-induced tachycardia ( beta-blockade ) at each dose of flestolol , 0.5 , 2.5 , 5.0 , 15.0 , and 50.0 micrograms/kg/min , was 15.1 % , 45.9 % , 67.0 % , 85.9 % , and 90.3 % , respectively .
C0022245
isoproterenol
C0039231
tachycardia