title: EKG of the month.
mesh_terms: D004071:Digitalis Glycosides / Q000506:poisoning*; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis*
chemical_list: D004071:Digitalis Glycosides