PMC6289149_01
Electrocardiogram trace of the patient when dysrhythmia occurred (Torsade de Pointes).
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F1
After a few hours of monitoring, the patient suffered repeated VT attacks (Fig 1).
24-hour-ECG Holter monitoring with long QTC showing polymorphic ventricular tachycardia (Torsade de Pointes).
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PMC6289149_01_emerg-6-e49-g002.jpg
F2
After a 24-hour Holter ECG monitoring, long QT intervals (QT = 490 ms) and VT were observed (Fig 2).