Tachycardia and bradycardia coexisting in the same pulmonary vein

Hakan Oral*, Bradley P. Knight, Hiroshi Tada, Fred Morady

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


During segmental isolation of the pulmonary veins (PVs) in a patient with paroxysmal atrial fibrillation, there was a PV bradycardia that was dissociated from the left atrium in a segment of the right superior PV, whereas the remaining segments showed passive activation of a PV fascicle during sinus rhythm. Rapid atrial pacing induced a PV tachycardia in the nonisolated fascicles, and the dissociated PV bradycardia persisted in a segment of the same PV. These observations indicate that PV fascicles are insulated from each other and that a dissociated PV rhythm does not necessarily indicate complete isolation of a PV.

Original languageEnglish (US)
Pages (from-to)186-188
Number of pages3
JournalJournal of cardiovascular electrophysiology
Issue number2
StatePublished - 2002


  • Atrial fibrillation
  • Pulmonary vein isolation
  • Pulmonary vein rhythms
  • Radiofrequency catheter ablation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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