Persistent functional atrioventricular block in two patients with prolonged QT intervals: elucidation of the mechanism of block.

@article{Hare1990PersistentFA,
  title={Persistent functional atrioventricular block in two patients with prolonged QT intervals: elucidation of the mechanism of block.},
  author={George F Van Hare and Michael R. Franz and Christophe Rog{\'e} and Melvin Scheinman},
  journal={Pacing and clinical electrophysiology : PACE},
  year={1990},
  volume={13 5},
  pages={608-18}
}
This article describes two infants with prolonged QT interval and intermittent second-degree atrioventricular block. An asymptomatic 14-month-old child with persistent 2:1 atrioventricular conduction since birth underwent electrophysiology study including measurements with a contact monophasic action potential catheter. During 2:1 conduction, atrioventricular block occurred distal to the site of the His-bundle recording. Monophasic action potential duration was closely related to prior RR… CONTINUE READING
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