Electrocardiograms of the month.
D000368:Aged; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D006947:Hyperkalemia / Q000503:physiopathology*; D013577:Syndrome; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis*