Focal atrial fibrillation in dextrocardia

Takumi Yamada, H. Thomas Mcelderry, Harish Doppalapudi, Michael Platonov, Andrew E. Epstein, Vance J. Plumb, G. Neal Kay

Research output: Contribution to journalArticle

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A 49-year-old woman with dextrocardia and situs inversus underwent catheter ablation of paroxysmal atrial fibrillation (AF). During the electrophysiologic study, AF triggered by frequent premature atrial contractions (PACs) with a short coupling interval exhibiting a "P on T" pattern occurred. Pulmonary vein mapping revealed that those PACs originated from right-sided (anatomic left) or left-sided (anatomic right) pulmonary veins. In this case with mirror-image dextrocardia, the P-wave morphologies in leads I and aVL and the II/III ratio of the P-wave amplitude were helpful for predicting a right- or left-sided pulmonary vein origin.

Original languageEnglish (US)
Pages (from-to)301-304
Number of pages4
JournalAnnals of Noninvasive Electrocardiology
Issue number3
StatePublished - Jul 2009
Externally publishedYes


  • Dextrocardia
  • Focal atrial fibrillation
  • P-wave morphology
  • Premature atrial contraction

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    Yamada, T., Mcelderry, H. T., Doppalapudi, H., Platonov, M., Epstein, A. E., Plumb, V. J., & Kay, G. N. (2009). Focal atrial fibrillation in dextrocardia. Annals of Noninvasive Electrocardiology, 14(3), 301-304.