Electrocardiogram of the month. Sick sinus syndrome.
D000368:Aged; D001919:Bradycardia / Q000503:physiopathology; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis; D006801:Humans; D008297:Male; D012804:Sick Sinus Syndrome / Q000175:diagnosis* / Q000503:physiopathology