title: Focal atrial fibrillation in dextrocardia.
abstract: 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.
authors.affiliation: Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL 35294-0019 ,USA. takumi-y@fb4.so-net.ne.jp
authors.forename: Takumi
authors.initials: T
authors.lastname: Yamada
authors.forename: H Thomas
authors.initials: HT
authors.lastname: McElderry
authors.forename: Harish
authors.initials: H
authors.lastname: Doppalapudi
authors.forename: Michael
authors.initials: M
authors.lastname: Platonov
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Epstein
authors.forename: Vance J
authors.initials: VJ
authors.lastname: Plumb
authors.forename: G Neal
authors.initials: GN
authors.lastname: Kay
mesh_terms: D001281:Atrial Fibrillation / Q000503:physiopathology* / Q000601:surgery; D017115:Catheter Ablation; D003914:Dextrocardia / Q000503:physiopathology*; D004562:Electrocardiography; D006801:Humans; D008875:Middle Aged; D011667:Pulmonary Veins / Q000002:abnormalities*; D012857:Situs Inversus / Q000503:physiopathology*