Data from implantable cardioverter-defibrillator (ICD) registries of D-TGA patients indicate that SVT often coexists or precipitates malignant ventricular arrhythmias leading to ICD therapy or SCD. Additionally, supraventricular tachycardia (SVT) is considered to be a risk factor for the development of ventricular arrhythmias and SCD. 1– 3 Etiology of SCD has been attributed to tachyarrhythmias rather than bradyarrhythmias, given the observation that patients with D-TGA and pacemakers are not protected from SCD. By the time individuals reach the second to fourth decade of life, systemic ventricular failure, baffle leaks or obstruction, atrial arrhythmias, ventricular arrhythmias, and sudden cardiac death (SCD) can result. Individuals with complete transposition of the great arteries (D-TGA) following atrial redirective reconstructive surgery, such as a Mustard or Senning baffle, can develop a multitude of late complications. Eckhardt, MD, Division of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, H6/343 CSC, Madison, WI 53792. Manuscript received August 26, 2010, final version accepted September 20, 2010.Īddress correspondence to: Lee L. The authors report no conflicts of interest for the published content. D-TGA, catheter ablation, atrial flutter, ultrasound-guided imaging, intracardiac electroanatomic mapping. ECKHARDT, MD and CESAR ALBERTE, MDĭivision of Cardiovascular Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI Catheter Ablation for D-TGA Related Atrial Flutter Using Intracardiac Guided Echocardiography
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