Effect of replacement of potassium by rubidium on the transmembrane action potential and contractility of human papillary muscle.

Action Potentials/drug effects Adenosine Triphosphatases/antagonists & inhibitors Adolescent Adult Child Humans In Vitro Techniques Middle Aged Muscle Contraction/drug effects Myocardium/enzymology Papillary Muscles/drug effects,physiology Potassium/pharmacology Rubidium/pharmacology Stimulation, Chemical Time Factors

Adenosine Triphosphatases Rubidium Potassium