title: Preexcitation syndrome.
mesh_terms: D001281:Atrial Fibrillation / Q000503:physiopathology* / Q000628:therapy; D001282:Atrial Flutter / Q000175:diagnosis; D004562:Electrocardiography; D004594:Electrophysiology; D006323:Heart Arrest / Q000175:diagnosis; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D013610:Tachycardia / Q000188:drug therapy; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*