PMC2902051_01
ECG at presentation: ventricular-paced rhythm at the rate of 70, prolonged corrected QT interval (QTc) of 510 milliseconds (msec) and concordant T wave inversion in lateral precordial leads.
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fig1
Baseline ECG (two months prior to presentation): ventricular-paced rhythm at the rate of 70, corrected QT interval (QTc) of 410 milliseconds (msec).
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PMC2902051_01_CRP2010-643832.002.jpg
fig2
Her baseline ECG (2 months prior) showed a QTc of 410 msec and normal discordant T waves in precordial leads (Figure 2).