Cardiac arrhythmias.
D001145:Arrhythmias, Cardiac / Q000628:therapy; D001919:Bradycardia / Q000150:complications; D002037:Bundle-Branch Block / Q000209:etiology / Q000473:pathology; D004562:Electrocardiography; D004594:Electrophysiology; D006329:Heart Conduction System; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000150:complications; D014927:Wolff-Parkinson-White Syndrome / Q000473:pathology