title: Mapping strategy for multiple atrial tachyarrhythmias in a transplant heart.
abstract: BACKGROUND
  Different atrial arrhythmias can coexist in the recipient and donor atria after heart transplantation.
  
  
  METHODS
  We report an unusual case of a patient with three different types of atrial arrhythmia after heart transplantation: an atrial fibrillation in the recipient atria, and a cavotricuspid isthmus dependent atrial flutter and a focal atrial tachycardia in the donor atria. 3D electroanatomical mapping and ablation were guided by remote magnetic navigation (RMN). Atrial fibrillation continued in the recipient atria even after the donor heart was converted to sinus rhythm by ablation.
  
  
  CONCLUSIONS
  It is critical to understand the surgical anatomy of a bi-atrial anastomosis and its relevant electrical activation pattern before ablation. Appropriate electroanatomical mapping strategy with RMN can facilitate the successful ablation of post-transplant atrial arrhythmias.
authors.affiliation: Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. jinqi127@163.com.|Department of Cardiology, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. jinqi127@163.com.
authors.forename: Qi
authors.initials: Q
authors.lastname: Jin
authors.affiliation: Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. steen.pehrson@rh.region.dk.
authors.forename: Steen
authors.initials: S
authors.lastname: Pehrson
authors.affiliation: Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. pjc@dadlnet.dk.
authors.forename: Peter Karl
authors.initials: PK
authors.lastname: Jacobsen
authors.affiliation: Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. Xu.Chen@regionh.dk.
authors.forename: Xu
authors.initials: X
authors.lastname: Chen
mesh_terms: D002311:Cardiomyopathy, Dilated / Q000601:surgery; D017115:Catheter Ablation / Q000295:instrumentation / Q000379:methods*; D006325:Heart Atria / Q000503:physiopathology / Q000601:surgery*; D016027:Heart Transplantation / Q000009:adverse effects*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008280:Magnetics; D008297:Male; D013610:Tachycardia / Q000503:physiopathology / Q000601:surgery*