Supraventricular arrhythmia with abnormal QRS complex.
D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D013610:Tachycardia / Q000503:physiopathology; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology