The electrophysiological effects of ionophore X-537A on cardiac purkinje fibres
- PMID: 954979
- DOI: 10.1007/BF02003760
The electrophysiological effects of ionophore X-537A on cardiac purkinje fibres
Abstract
Using classical microelectrode techniques in canine cardiac Purkinje fibres, calcium ionophore X-537A was shown to shorten the action potential, hyperpolarizing the membrane and lowering the plateau, suggesting that intracellular calcium controls membrane permeability to potassium in this preparation.