Details

Autor(en) / Beteiligte

• Okishige, Kaoru
• Okumura, Ken
• Tsurugi, Takuo
• Yotsukura, Akihiko
• Nanbu, Tadafumi
• Sugiura, Hirotaka
• Sanada, Akiko
• Kondo, Yusuke
• Takano, Masahiro
• Keida, Takehiko
• Fujita, Masaki
• Kamiya, Hiroki
• Tsuchiya, Kunihiko
• Adachi, Kazumasa
• Katoh, Yukinori
• Hiroshima, Kenichi
• Yamamoto, Kei
• Ashikaga, Keiichi
• Hoshiyama, Tadashi
• Sasano, Tetsuo
• Hirao, Kenzo

Titel

Japan ablation registry: cryoablation in atrioventricular nodal reentrant tachycardia (“JARCANRET study”): results from large multicenter retrospective investigation

Ist Teil von

• Journal of interventional cardiac electrophysiology, 2020-09, Vol.58 (3), p.289-297

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2020

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Purpose Cryoenergy has been demonstrated to be a safe alternative to radiofrequency ablation for catheter ablation of atrioventricular nodal reentrant tachycardia (AVNRT). This study aimed to evaluate the safety and efficacy of cryoablation in patients with AVNRT. Methods A multicenter retrospective study was performed. Two hundred eighty-three consecutive patients with AVNRT underwent cryoablation. Cryomapping at − 30 °C and − 80 °C was performed to predict cryoablation outcome and ascertain antegrade conduction. Cryoenergy was delivered subsequently at the same spot (cryoablation at − 80 °C) for 240 s. Results Ablation procedure was acutely successful in 281 out of 283 patients (99.3%). Of note, 22 patients (10.1%) had transient AV block during the cryoablation, but no injurious effects on AV conduction were provoked during cryomapping. During a follow-up period of 367 ± 35 days, the recurrence rate was 3.9% (11 out of 281). There were no significant differences among the patients with a complete elimination of slow pathway conduction, AH jump without an echo beat, and AH jump with a single echo beat, in terms of the long-term recurrence of AVNRT. Conclusions Cryoablation of AVNRT appears to be effective both acutely and during the long-term with a minimal risk of unwanted injuries to the conduction system. It seems to be important to monitor the antegrade conduction during cryoenergy applications, even when cryomapping demonstrates a safe location for cryoablation. The recurrence rate of AVNRT did not differ according to the properties of the residual slow pathway conduction.