each subject participated in four studies as follows : ( 1 ) potassium chloride infusion ( 0.75 meq/kg , i.v . ) given over 2 hours , ( 2 ) epinephrine ( 0.05 micrograms/kg.min ) plus potassium chloride , ( 3 ) propranolol ( 1.43 micrograms/kg.min ) plus epinephrine plus potassium chloride , and ( 4 ) propranolol plus potassium chloride .
C0008203
chloride
C0032825
potassium chloride