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  • Title: Sotalol associated torsades de pointes tachycardia in a 15-month-old child: successful therapy with magnesium aspartate.
    Author: Sasse M, Paul T, Bergmann P, Kallfelz HC.
    Journal: Pacing Clin Electrophysiol; 1998 May; 21(5):1164-6. PubMed ID: 9604253.
    Abstract:
    Torsades de points (Tdp) is a form of ventricular tachycardia, and its occurrence in childhood is very rare. In adult patients treated with sotalol, Tdp has been reported to the occur with an incidence of 2%-4%. In children who are treated with sotalol, occurrence of Tdp has been reported in only a single case. A 15-month-old girl with Wolff-Parkinson-White syndrome developed recurrent syncopal attacks. She had been treated with sotalol 1.5 mg/kg daily since shortly after birth because of recurrent episodes of paroxysmal supraventricular tachycardia. ECG monitoring exhibited frequent Tdp tachycardia. Serum electrolyte levels were normal. Echocardiographic analysis excluded a structural heart defect and did not show any signs of myocardial infection. Sotalol treatment was stopped and an infusion with lidocaine was started. Despite this therapy the Tdp continued. Magnesium aspartate was then administered, which immediately stopped the Tdp. As no other reason was evident, Tdp in this child has to be judged as a proarrhythmia related to sotalol therapy.
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