A very narrow preexisting isthmus in a case with typical atrial flutter

Takumi Yamada, Yoshimasa Murakami, Vance J. Plumb, G. Neal Kay

Research output: Contribution to journalArticlepeer-review


A 61-year-old woman with typical atrial flutter underwent an electrophysiologic study and radiofrequency catheter ablation. The electroanatomic mapping revealed two contiguous lines of distinct double potentials (DPs) extending anteriorly/posteriorly from the coronary sinus ostium to the inferior vena cava (IVC) border. A large part of the anterior line of the DPs was close and parallel to the tricuspid annulus (TA). An initial discrete radiofrequency application at the very narrow preexisting isthmus between the TA and anterior line of the DPs completed the IVC-TA isthmus conduction block.

Original languageEnglish (US)
Pages (from-to)709-712
Number of pages4
JournalPACE - Pacing and Clinical Electrophysiology
Issue number5
StatePublished - May 2007
Externally publishedYes


  • Atrial flutter
  • Cavo-tricuspid isthmus
  • Conduction block
  • Double potential
  • Radiofrequency catheter ablation


Dive into the research topics of 'A very narrow preexisting isthmus in a case with typical atrial flutter'. Together they form a unique fingerprint.

Cite this