Atypical QT prolongation

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Atypical QT prolongation

Fig. 2. Correct answer: a. Follow-up recording after calcium replacement. Serum Calcium2+ increased from 6.8 to 9.2 mg/dL. Potassium levels were normal and the patient was taking no repolarization-prolonging therapy. doi:10.1016/j.jelectrocard.2006.12.008

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