title: Electrocardiogram of the month.
mesh_terms: D000368:Aged; D004071:Digitalis Glycosides / Q000009:adverse effects; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000175:diagnosis*
chemical_list: D004071:Digitalis Glycosides