title: Different mechanisms underlying consecutive, postoperative atrial tachyarrhythmias in a Fontan patient.
abstract: BACKGROUND
  Atrial tachyarrhythmias (AT) frequently develop later after a Fontan operation and can be successfully treated by ablative therapy. However, new arrhythmias often develop.
  
  
  RESULTS
  Consecutive AT emerging in a Fontan patient were ablated using three-dimensional electro-anatomical mapping. During a 6-year period, nine different AT were ablated, including intraatrial reentrant AT (N=5), focal AT (N=3), and focal atrial fibrillation (N=1) originating from distinct right atrial sites.
  
  
  CONCLUSIONS
  In a Fontan patient, successive AT can be caused by different mechanisms. These AT are most likely the result of progressive atrial cardiomyopathy and can be treated by catheter ablation.
authors.affiliation: Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
authors.forename: Natasja M S
authors.initials: NM
authors.lastname: De Groot
authors.forename: Nico
authors.initials: N
authors.lastname: Blom
authors.forename: Ernst E
authors.initials: EE
authors.lastname: Vd Wall
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Schalij
mesh_terms: D000328:Adult; D005260:Female; D018729:Fontan Procedure / Q000009:adverse effects*; D006801:Humans; D013612:Tachycardia, Ectopic Atrial / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery*