Cryoablation versus radiofrequency energy for the ablation of atrioventricular nodal reentrant tachycardia (the CYRANO Study): results from a large multicenter prospective randomized trial
BACKGROUND: Cryoablation has emerged as an alternative to radiofrequency catheter ablation (RFCA) for the treatment of atrioventricular (AV) nodal reentrant tachycardia (AVNRT). The purpose of this prospective randomized study was to test whether cryoablation is as effective as RFCA during both shor...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
November 15, 2010
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| In: |
Circulation
Year: 2010, Volume: 122, Issue: 22, Pages: 2239-2245 |
| ISSN: | 1524-4539 |
| DOI: | 10.1161/CIRCULATIONAHA.110.970350 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1161/CIRCULATIONAHA.110.970350
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| Author Notes: | Isabel Deisenhofer, MD, Bernhard Zrenner, MD, Yue-hui Yin, MD, Heinz-Friedrich Pitschner, MD, Malte Kuniss, MD, Georg Großmann, MD, Sascha Stiller, MD, Armin Luik, MD, Christian Veltmann, MD, Julia Frank, MS, Julia Linner, MS, Heidi L. Estner, MD, Andreas Pflaumer, MD, Jinjin Wu, MD, Christian von Bary, MD, Ekrem Ücer, MD, Tilko Reents, MD, Stylianos Tzeis, MD, Stephanie Fichtner, MD, Susanne Kathan, Dipl. Biol., Martin R. Karch, MD, Clemens Jilek, MD, Sonia Ammar, MD, Christof Kolb, MD, Zeng-Chang Liu, MD, Bernhard Haller, Dipl. Stat., Claus Schmitt, MD, and Gabriele Hessling, MD |
| Summary: | BACKGROUND: Cryoablation has emerged as an alternative to radiofrequency catheter ablation (RFCA) for the treatment of atrioventricular (AV) nodal reentrant tachycardia (AVNRT). The purpose of this prospective randomized study was to test whether cryoablation is as effective as RFCA during both short-term and long-term follow-up with a lower risk of permanent AV block. - METHODS AND RESULTS: A total of 509 patients underwent slow pathway cryoablation (n=251) or RFCA (n=258). The primary end point was immediate ablation failure, permanent AV block, and AVNRT recurrence during a 6-month follow-up. Secondary end points included procedural parameters, device functionality, and pain perception. Significantly more patients in the cryoablation group than the RFCA group reached the primary end point (12.6% versus 6.3%; P=0.018). Whereas immediate ablation success (96.8% versus 98.4%) and occurrence of permanent AV block (0% versus 0.4%) did not differ, AVNRT recurrence was significantly more frequent in the cryoablation group (9.4% versus 4.4%; P=0.029). In the cryoablation group, procedure duration was longer (138±54 versus 123±48 minutes; P=0.0012) and more device problems occurred (13 versus 2 patients; P=0.033). Pain perception was lower in the cryoablation group (P<0.001). - CONCLUSIONS: Cryoablation for AVNRT is as effective as RFCA over the short term but is associated with a higher recurrence rate at the 6-month follow-up. The risk of permanent AV block does not differ significantly between cryoablation and RFCA. The potential benefits of cryoenergy relative to ablation safety and pain perception are counterbalanced by longer procedure times, more device problems, and a high recurrence rate. - CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT00196222. |
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| Item Description: | Gesehen am 14.12.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1524-4539 |
| DOI: | 10.1161/CIRCULATIONAHA.110.970350 |