Antiepileptic rufinamide and QTc interval shortening in a patient with long QT syndrome: case report.

Background: There is limited pharmacologic therapy to reduce the QT interval in hereditary long QT syndrome (LQTS).

Case Summary: We describe a child with Allan-Herndon-Dudley syndrome, Lennox-Gastaut epileptic syndrome (LGS), and LQTS Type 1 (LQTS1). Rufinamide was added to his antiepileptic medications to improve seizure control and was noted to be associated with a marked improvement in electrocardiogram QT interval. To the best of our knowledge, this is the first reported case of successful pharmacologic shortening of the QT interval in LQTS1.

Discussion: This case report highlights the potential benefits of rufinamide, a drug associated with mild QT shortening in normal individuals, to markedly reduce and normalize QT duration in a subject with LQTS1.