Key result
A newborn with persistent 2:1 atrioventricular block and long QT interval developed self-limiting ventricular tachycardia and torsade de pointes 2 days after birth without structural cardiac defects.
Case Report (n=1)
This case report describes a rare presentation of self-limiting torsade de pointes in a newborn with persistent 2:1 AV block and long QT interval without structural heart disease.
May prompt arrhythmia monitoring in neonates with 2:1 AV block and long QT; single case report leaves management questions open.
A case of QT interval prolongation with ventricular tachycardia and torsade de pointes is reported. Arrhythmias occurred in a baby with persistent 2:1 atrioventricular block and long QT interval 2 days after birth and were self-limiting. No structural cardiac defect was present. Serum levels of sodium, potassium, magnesium and calcium were in the normal range. Finally, the pathogenetic mechanism of cardiac block is discussed.
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Perticone et al. (2008) conducted a case report in QT interval prolongation, ventricular tachycardia, torsade de pointes, persistent 2:1 atrioventricular block (n=1). A newborn with persistent 2:1 atrioventricular block and long QT interval developed self-limiting ventricular tachycardia and torsade de pointes 2 days after birth without structural cardiac defects.
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