Arrhythmias caused by digitalis toxicity.
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D004071:Digitalis Glycosides / Q000009:adverse effects*; D004562:Electrocardiography; D006327:Heart Block / Q000209:etiology; D006801:Humans; D011188:Potassium / Q000627:therapeutic use
D004071:Digitalis Glycosides; D011188:Potassium