운동에 의해 유발된 발작 1례

저자들은 운동에 의해 유발되는 발작이 지속되어수년간 간질로 치료받았던 6년 5개월 남아에서, 특징적으로 심전도에서 QTc 간격이 연장되어 있고,운동 유발 검사에서 다형성 심실 빈맥 소견을 보여QT 연장 증후군으로 진단하고 베타 수용체 차단제로 치료하면서 추적 관찰 중인 1례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

Long QT syndrome(LQTS) is characterized by prolongation of the QT interval, frequent episodes of syncope, and ventricular tachycardia leading to sudden cardiac death in adolescents and young adults. Early diagnosis and prompt treatment to reduce the risk of life-threatening cardiac events is crucial, however sudden onset convulsive syncope may be misdiagnosed as epilepsy and lead to antiepileptic drug therapy for many years. We experienced a case of six-year-old boy who were having seizure triggered by exercise and being treated with antiepileptic drugs. He had normal EEG and brain MRI but his ECG revealed prolonged QT interval(QTc= 477 ms) and treadmill test induced polymorphic ventricular tachycardia. After applying β-blocker, he had no more seizure attacks. We report a case of long QT syndrome misdiagnosed as epilepsy with a brief review of related literatures.