Sick sinus syndrome.
D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D010138:Pacemaker, Artificial; D012804:Sick Sinus Syndrome / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D012849:Sinoatrial Node / Q000503:physiopathology
D000889:Anti-Arrhythmia Agents