( a ) effects of pindolol , carteolol , propranolol , alprenolol , practolol and acebutolol ( 0.015-0.3 mumole/kg i.v . ) on blood pressure of anesthetised rats , b ) effects of these drugs on the positive chronotropic action and vasodilation induced by isoprenaline ( 0.1 microgram/kg i.v . ) in anesthetized rats , c ) effects of these drugs on the increase in heart rate and contractile force of isolated rat and guinea pig atria induced by isoprenaline , d ) effects of these drugs on the relaxation of isolated guinea pig trachea induced by isoprenaline .
C1372804
positive chronotropic
C0022245
isoprenaline