in five conscious animals , infusion of propranolol ( 1 mg/kg followed by 0.47-0.65 mg kg-1 h-1 ) reduced hr from 117.6 +/- 4.0 beats per minute ( mean +/- se ) during control periods of 73.2 +/- 2.0 beats per minute ( p less than 0.005 ) 90 min after the start of infusion .
C0033497
propranolol
C0428977
reduced hr