title: Electrocardiogram of the month.
mesh_terms: D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D003327:Coronary Disease / Q000175:diagnosis; D004071:Digitalis Glycosides / Q000506:poisoning; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles; D006801:Humans
chemical_list: D004071:Digitalis Glycosides