the responses of the observed variables to the change from 1 g to 3 g were compared before and after combined beta-adrenergic and parasympathetic blockade of the heart induced by the i.v . administration of propranolol , 0.25 mg/kg bwt , and atropine , 0.03 mg/kg bwt .
C0018794
blockade
C0004259
atropine