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. 2012 Apr-Jun;3(2):67–75. doi: 10.4103/0975-3583.95357

Figure 3.

Figure 3

The 12-lead electrocardiogram (ECG) for patients from kindred L151: (a) ECGs for L151-01, now a 17-year-old girl: The left ECG was recorded when she was 12 years old and diagnosed as having Long QT syndrome (QTc 480 ms); the right one was recorded when she was 16 years old and taking metoprolol 0.69 mg/Kg (QTc 530 ms). (b) ECG for the 46-year-old Jervell and Lange-Nielsen syndrome proband: The only abnormality is QT prolongation (QTc 460 ms) for him. He has no syncope after his 30's. No ECG was available for his young ages when he had syncope.