A case of torsade de pointes occurring in a newborn with persistent 2:1 atrioventricular block

Cardiology. 1993;83(1-2):134-40. doi: 10.1159/000175961.

Abstract

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.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bundle of His / drug effects
  • Bundle of His / physiopathology
  • Calcium Gluconate / administration & dosage
  • Drug Therapy, Combination
  • Electrocardiography, Ambulatory / drug effects
  • Heart Block / congenital*
  • Heart Block / drug therapy
  • Heart Block / physiopathology
  • Heart Ventricles / drug effects
  • Heart Ventricles / physiopathology
  • Humans
  • Infant, Newborn
  • Long QT Syndrome / congenital*
  • Long QT Syndrome / drug therapy
  • Long QT Syndrome / physiopathology
  • Magnesium Sulfate / administration & dosage
  • Male
  • Sudden Infant Death / etiology
  • Sudden Infant Death / prevention & control
  • Torsades de Pointes / congenital*
  • Torsades de Pointes / drug therapy
  • Torsades de Pointes / physiopathology

Substances

  • Magnesium Sulfate
  • Calcium Gluconate