PMC5468583_01
QTc 441 (Day 1).
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fig1
Electrocardiogram (ECG) (Figure 1) at admission demonstrated normal QT interval and serum potassium was 5.2 mEq/L.
QTc 632 (Day 8).
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fig2
QTc further increased to 632 ms (Figure 2).
Torsades de Pointes (Day 8).
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fig3
 Three episodes of self-terminating TdP were noted on telemetry, with approximately ten seconds being the longest duration (Figure 3).
QTc 487 (Day 17).
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fig4
QTc improved to 487 (Figure 4) and patient had no more events on telemetry.