The Wolff-Parkinson-White syndrome.
D004562:Electrocardiography; D006329:Heart Conduction System / Q000601:surgery; D006801:Humans; D013614:Tachycardia, Paroxysmal / Q000150:complications / Q000601:surgery; D014927:Wolff-Parkinson-White Syndrome / Q000150:complications / Q000601:surgery