Hereditary long Q-T syndrome presenting as epilepsy: electroencephalography laboratory diagnosis.
Patients with hereditary Q-T interval prolongation can present with seizures, syncope, and sudden death. In 2 siblings with autosomal dominant familial long Q-T syndrome, electroencephalographic examinations performed 6 and 2 years before diagnosis included electrocardiographic tracings documenting the cardiac abnormality. A timely diagnosis of this condition may have prevented the death of 1 of these patients. Measurement of the corrected Q-T interval on electrocardiographic tracings obtained in the electroencephalography laboratory should be considered in selected patients.
Gospe
S M
SM
Department of Neurology, School of Medicine, University of California, Davis Medical Center, Sacramento 95817.
Choy
M
M
D000293:Adolescent; D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D002648:Child; D003937:Diagnosis, Differential; D004569:Electroencephalography; D004827:Epilepsy / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male