Fig. 2From: Case report of antiseizure medicine-induced long QT syndrome and a literature reviewECG recordings at four different periods. QTT interval is often measured on lead II or V5. a, b QTc of 607 ms and huge T waves detected by ECG on August 12, and changes in the S-T segment. c, d QTc of 558 ms detected by ECG on August 19. e Holter ECG monitoring of Torsades de Pointes on August 19. f ECG revealed QTc of 458 ms on August 21Back to article page