title: Q-T interval syndromes.
mesh_terms: D000293:Adolescent; D001145:Arrhythmias, Cardiac / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003638:Deafness / Q000150:complications / Q000235:genetics*; D003645:Death, Sudden; D004562:Electrocardiography; D006331:Heart Diseases / Q000150:complications / Q000175:diagnosis / Q000235:genetics*; D006801:Humans; D013575:Syncope / Q000150:complications / Q000235:genetics*; D013577:Syndrome