the systemic haemodynamic effects of a 10 min i.v . infusion of three dihydropyridine ca2+ channel blockers , nifedipine ( 1 , 2 and 4 micrograms.kg-1.min-1 ) , nisoldipine ( 0.5 , 1 and 2 micrograms.kg-1.min-1 ) and nimodipine ( 1 , 2 and 4 micrograms.kg-1.min-1 ) were studied in instrumented conscious pigs with or without a propranolol-induced beta-adrenoceptor blockade ( 0.5 mg.kg-1 bolus followed by 0.5 mg.kg-1.h-1 ) .
C0012315
dihydropyridine
C0028116
nisoldipine