title: Catheter Ablation of Hemodynamically Unstable Ventricular Tachycardia in a Patient with Dextro - Transposition of the Great Arteries and Mustard's Repair.
abstract: BACKGROUND
  A patient with D-TGA and surgical repair (Mustard's procedure) presented with appropriate ICD shocks due to monomorphic ventricular tachycardia, refractory to antiarrhythmic medications.
  
  
  RESULTS
  The patient underwent an electrophysiological study and catheter ablation for the VT. Substrate and pace mapping techniques, with the help of an electroanatomical mapping system, was used to localize and ablate the tachycardia successfully.
  
  
  CONCLUSIONS
  In patients with D-TGA and Mustard's repair, scar tissue resulting from VSD repair can act as a substrate for recurrent VT. Catheter ablation of VT is useful in management of VT that occurs despite antiarrhythmic therapy and/or when it is unstable.
authors.affiliation: McMaster University and Hamilton Health Sciences.
authors.forename: Girish M
authors.initials: GM
authors.lastname: Nair
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: Healey
authors.forename: Elaine
authors.initials: E
authors.lastname: Gordon
authors.forename: Syamkumar
authors.initials: S
authors.lastname: Divakaramenon
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Morillo