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Figure 1 Electrocardiogram (leads V1 through V6) of an 82-year-old woman who developed torsade de pointes three days after anterior myocardial infarction. The QT is normal on admission (QTc = 418 ms), increases by day 2 (QTc = 598 ms), reaches a maximal duration on day 3 (QTc = 645 ms) and normalizes by day 10 (QTc = 430 ms).
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