[Educational lecture on clinical aspects of bradyarrhythmia--sick sinus syndrome and A-V block (author's transl)].
D001919:Bradycardia / Q000175:diagnosis* / Q000628:therapy; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012804:Sick Sinus Syndrome / Q000175:diagnosis* / Q000628:therapy