Focal atrial fibrillation associated with multiple breakout sites at the crista terminalis

Takumi Yamada, Yoshimasa Murakami, Taro Okada, Toyoaki Murohara

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A 34-year-old man with permanent atrial fibrillation (AF) underwent electrophysiologic testing. Spontaneous AF was observed even after successful pulmonary vein (PV) isolation of all four PVs. Intracardiac electrograms recorded from a basket catheter deployed around the crista terminalis during triggered atrial premature beats exhibited low-amplitude potentials which were suggested to reflect focal ectopic activity, preceding high-frequency atrial potentials. The firing from those focal activity sites induced a shift in the breakout sites and conduction block to the right atrium, which suggested the participation of preferential conduction. Radiofrequency catheter ablation targeting the focal origin and preferential conduction sites eliminated the AF.

Original languageEnglish (US)
Pages (from-to)207-210
Number of pages4
JournalPACE - Pacing and Clinical Electrophysiology
Volume29
Issue number2
DOIs
StatePublished - Feb 2006
Externally publishedYes

Keywords

  • Atrial fibrillation
  • Crista terminalis
  • Preferential conduction
  • Radiofrequency catheter ablation

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