title: Transvenous catheter ablation of a right atrial automatic ectopic tachycardia.
abstract: A 10 year old patient with right atrial automatic ectopic tachycardia underwent successful transvenous catheter ablation after endocardial mapping. Tachycardia had been present for 7 years before ablation and associated with development of dilated cardiomyopathy. A single 50 J discharge at the point of earliest atrial activation was followed by the establishment of sinus rhythm that remains at 10 months' follow-up. This case represents the first reported successful catheter ablation of an atrial automatic ectopic tachycardia. Specific anatomic factors favoring successful ablation and improvement in technique are discussed.
mesh_terms: D006328:Cardiac Catheterization / Q000379:methods*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D002648:Child; D004566:Electrodes / Q000627:therapeutic use; D004594:Electrophysiology; D004699:Endocardium / Q000503:physiopathology; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D013610:Tachycardia / Q000503:physiopathology / Q000628:therapy*