Abstract

A 13-month-old child with the uncommon variant of long-QT syndrome associated with syndactyly of feet and hands experienced an apparently life-threatening event during full-dose β-blocker therapy. The indication for an implantable cardioverter-defibrillator (ICD) was established, and the patient was admitted to the hospital. The QTc interval was 580 ms, and no mutations were present in any of the known LQTS genes. The child weighed 11.9 kg with a length of 76 cm. To minimize the surgical injury and reduce the potential risk …

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