title: Slow and wide QRS complex tachycardia as a unique complication following radiofrequency catheter ablation of a left-sided accessory pathway in a child.
abstract: Radiofrequency lesions can, theoretically, be the substrate for new persistent arrhythmias. As far as we know, this has never previously been encountered after transcatheter ablation of accessory pathways. A child with Wolff-Parkinson-White syndrome was referred for radiofrequency catheter ablation of a left-sided accessory pathway. After successful ablation of the accessory pathway using a retrograde transaortic approach, the child developed an incessant wide QRS complex tachycardia at slow rate that was resistant to pharmacologic interventions. The focus of the tachycardia was identical to the ventricular site of insertion of the eliminated accessory pathway.
authors.affiliation: Hungarian Institute of Cardiology, Budapest, Hungary.
authors.forename: Radu
authors.initials: R
authors.lastname: Vatasescu
authors.forename: Laszlo
authors.initials: L
authors.lastname: Kornyei
authors.forename: Tamas
authors.initials: T
authors.lastname: Szili-Torok
mesh_terms: D017115:Catheter Ablation; D002648:Child; D004562:Electrocardiography; D006329:Heart Conduction System / Q000601:surgery; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D013610:Tachycardia / Q000209:etiology*; D014927:Wolff-Parkinson-White Syndrome / Q000601:surgery*