PURPOSE: The 9-French 8-mm tip cryoablation catheter confers a high rate of acute slow pathway (SP) elimination and an acceptable short-term outcome in patients with atrioventricular nodal reentrant tachycardia (AVNRT). The aim of this study was to investigate the long-term outcome of patients treated with this electrode in this indication. METHODS: Eighty-two patients (female = 52) with a mean age of 54.9 ± 17.7 years underwent SP elimination for typical AVNRT with the 8-mm tip cryocatheter in our institution between November 2009 to June 2012. Clinical and procedural characteristics were prospectively collected. RESULTS: Acute procedural success defined as AVNRT non-inducibility at the end of the procedure was obtained in 81/82 patients (98.7 %). Mean procedure duration and fluoroscopy time were 74.4 ± 28.7 min (range, 35-160 min) and 8.7 ± 5.3 min (range, 2-26 min), respectively. Mean number of energy applications was 4.0 ± 2.4 (range, 2-15). No permanent atrioventricular block was observed. Transient atrioventricular block occurred in 12 patients (14.6 %). Traumatic fast pathway conduction block occurred in one patient before cryoenergy delivery. Using an intention-to-treat analysis, 78 patients (95.1 %) remained free of AVNRT recurrence during a mean follow-up of 17.8 ± 9.3 months. CONCLUSIONS: This study confirmed that the 8-mm tip cryocatheter is both safe and highly effective for SP conduction elimination in patients with AVNRT and demonstrated a low recurrence rate during a long-term follow-up.
PURPOSE: The 9-French 8-mm tip cryoablation catheter confers a high rate of acute slow pathway (SP) elimination and an acceptable short-term outcome in patients with atrioventricular nodal reentrant tachycardia (AVNRT). The aim of this study was to investigate the long-term outcome of patients treated with this electrode in this indication. METHODS: Eighty-two patients (female = 52) with a mean age of 54.9 ± 17.7 years underwent SP elimination for typical AVNRT with the 8-mm tip cryocatheter in our institution between November 2009 to June 2012. Clinical and procedural characteristics were prospectively collected. RESULTS: Acute procedural success defined as AVNRT non-inducibility at the end of the procedure was obtained in 81/82 patients (98.7 %). Mean procedure duration and fluoroscopy time were 74.4 ± 28.7 min (range, 35-160 min) and 8.7 ± 5.3 min (range, 2-26 min), respectively. Mean number of energy applications was 4.0 ± 2.4 (range, 2-15). No permanent atrioventricular block was observed. Transient atrioventricular block occurred in 12 patients (14.6 %). Traumatic fast pathway conduction block occurred in one patient before cryoenergy delivery. Using an intention-to-treat analysis, 78 patients (95.1 %) remained free of AVNRT recurrence during a mean follow-up of 17.8 ± 9.3 months. CONCLUSIONS: This study confirmed that the 8-mm tip cryocatheter is both safe and highly effective for SP conduction elimination in patients with AVNRT and demonstrated a low recurrence rate during a long-term follow-up.
Authors: Mark A Wood; Babar Parvez; Amy L Ellenbogen; Katherine M Shaffer; Scott M Goldberg; Michael P Gaspar; Isti Arief; Christine M Schubert Journal: Pacing Clin Electrophysiol Date: 2007-05 Impact factor: 1.976
Authors: A C Skanes; M Dubuc; G J Klein; B Thibault; A D Krahn; R Yee; D Roy; P Guerra; M Talajic Journal: Circulation Date: 2000-12-05 Impact factor: 29.690
Authors: Eric S Silver; Jennifer N A Silva; Scott R Ceresnak; Nancy A Chiesa; Edward K Rhee; Anne M Dubin; Kishor Avasarala; George F Van Hare; Kathryn K Collins Journal: Pacing Clin Electrophysiol Date: 2010-03-05 Impact factor: 1.976
Authors: Dhiraj Gupta; Rasha K Al-Lamee; Mark J Earley; Peter Kistler; Stuart J Harris; Anthony W Nathan; Simon C Sporton; Richard J Schilling Journal: Europace Date: 2006-11-13 Impact factor: 5.214
Authors: Paul Khairy; Lena Rivard; Peter G Guerra; Jean-François Tanguay; Wadi Mawad; Denis Roy; Mario Talajic; Bernard Thibault; Laurent Macle; Marc Dubuc Journal: J Cardiovasc Electrophysiol Date: 2008-05-19
Authors: A S Thornton; P Janse; M Alings; M F Scholten; J M Mekel; M Miltenburg; E Jessurun; L Jordaens Journal: J Interv Card Electrophysiol Date: 2008-03-25 Impact factor: 1.900