Electrolytic balance and myocardial contraction.
D004562:Electrocardiography; D004573:Electrolytes / Q000378:metabolism*; D006321:Heart / Q000502:physiology*; D006801:Humans; D009200:Myocardial Contraction; D009206:Myocardium / Q000502:physiology*
D004573:Electrolytes
ELECTROCARDIOGRAPHY; ELECTROLYTES/metabolism; MYOCARDIUM/physiology