used as a pharmacological tool to block the Ca 2+ influx-mode of the Na+/Ca 2+ exchanger,
which is thought to contribute to ischemia/reperfusion and digitalis arrhythmias. We
examined effects of KB-R7943 on ischemia/reperfusion arrhythmias in beagle dogs
anesthetized with sodium pentobarbital. Lead II ECG and BP were measured. KB-R7943 or
the solvent (10% DMSO) was injected iv as a bolus, and 5 min later, the left anterior …