title: Atrioventricular dissociation with prolonged QT interval and syncopal attacks in a 10-year-old boy.
mesh_terms: D001146:Arrhythmia, Sinus / Q000235:genetics; D001145:Arrhythmias, Cardiac / Q000150:complications* / Q000188:drug therapy; D001285:Atropine / Q000494:pharmacology; D002648:Child; D004562:Electrocardiography; D006339:Heart Rate / Q000187:drug effects; D006352:Heart Ventricles; D006801:Humans; D007545:Isoproterenol / Q000627:therapeutic use; D008297:Male; D013575:Syncope / Q000150:complications*; D013577:Syndrome; D013610:Tachycardia / Q000150:complications*
chemical_list: D001285:Atropine; D007545:Isoproterenol