Cardiovascular Unit, Azienda Ospedaliero-Universitaria di Ferrara, Via Aldo Moro, 8 - 44124 Cona, Ferrara, FE, Italy.
Abbott Medical Italy, Clinical Department, Viale Thomas Alva Edison, 110, 20099, Sesto San Giovanni, MI, Italy.
J Interv Card Electrophysiol. 2020 Jun;58(1):61-67. doi: 10.1007/s10840-019-00578-z. Epub 2019 Jun 24.
Irrigated-tip ablation catheters increase safety and efficacy of ablation procedures, but their use in atrioventricular nodal re-entrant tachycardia (AVNRT) ablation has not been systematically evaluated. The aim of this study is to evaluate the safety and efficacy of radiofrequency (RF) catheter ablation of AVNRT by means of the novel flexible-tip open-irrigated catheter FlexAbility™ and a 3D electroanatomic mapping (EAM) system.
This is a single-center and single-operator study on 80 patients referred for AVNRT catheter ablation. Outcome included acute and long-term procedural success as well as complications reported over a median follow-up of 19 months (interquartile range 6-24 months).
Acute success was achieved in all 80 patients. One procedure-related major complication, involving the vascular access, occurred. Mean fluoroscopy time was 106 ± 71 s. One patient (1.2%) suffered long-term AVNRT recurrence. Five patients (6.2%) underwent ablation for AVNRT combined with ablation for other clinical arrhythmias.
Irrigated RF ablation of AVNRT by means of the novel flexible-tip open-irrigated catheter associated to 3D EAM system is effective and safe. Success rates are comparable to those of other techniques. Complication rate is very low.
灌流消融导管提高了消融手术的安全性和疗效，但它们在房室结折返性心动过速（AVNRT）消融中的应用尚未得到系统评估。本研究旨在评估新型柔性尖端开放式灌流导管 FlexAbility™ 和 3D 电生理标测（EAM）系统在射频（RF）导管消融 AVNRT 中的安全性和有效性。
这是一项针对 80 例因 AVNRT 导管消融而转诊的单中心、单操作者研究。结果包括急性和长期手术成功率以及中位数随访 19 个月（四分位距 6-24 个月）期间报告的并发症。
80 例患者均成功实现急性手术成功。发生 1 例与血管入路相关的重大手术并发症。平均透视时间为 106±71 秒。1 例（1.2%）患者出现长期 AVNRT 复发。5 例（6.2%）患者因 AVNRT 合并其他临床心律失常而行消融治疗。
新型柔性尖端开放式灌流导管联合 3D EAM 系统进行 RF 消融治疗 AVNRT 是有效且安全的。成功率与其他技术相当。并发症发生率很低。
