Two-to-one conduction block between left atrium and right lower pulmonary vein preceding complete vein isolation during radiofrequency current ablation

Pacing Clin Electrophysiol. 2004 Jun;27(6 Pt 1):829-30. doi: 10.1111/j.1540-8159.2004.00540.x.

Abstract

A 56-year-old patient with paroxysmal atrial fibrillation who developed a transient 2:1 block between the left atrium and right inferior pulmonary vein during a single application of radiofrequency current was described. The production of transient and complete atriovenous block by a single application of radiofrequency current demonstrates that a single connection between the pulmonary veins muscle and the left atrium may exist.

MeSH terms

  • Atrial Fibrillation / etiology
  • Atrial Fibrillation / physiopathology
  • Atrial Fibrillation / surgery*
  • Atrial Premature Complexes / complications
  • Atrial Premature Complexes / physiopathology
  • Atrial Premature Complexes / surgery*
  • Catheter Ablation*
  • Electrocardiography*
  • Electrocardiography, Ambulatory
  • Follow-Up Studies
  • Heart Atria / physiopathology*
  • Heart Conduction System / physiopathology
  • Heart Conduction System / surgery
  • Humans
  • Male
  • Middle Aged
  • Pulmonary Veins / physiopathology*
  • Pulmonary Veins / surgery*
  • Treatment Outcome