PMC9975254_01
Electrocardiogram.
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fig1
Electrocardiography showed remarkable sinus bradycardia, heart rate of 38 beats per minute, QT interval of 520 ms, and QT correction (QTc) interval of 482 ms (Figure 1). Several episodes of torsade de pointes (Figure 1) were detected on cardiac telemetry monitoring; however, these episodes did not affect hemodynamic stability.
QT and QTc changes.
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fig2
The longitudinal QT change is shown in Figure 2.