Key result
Catheter ablation of AVNRT using irrigated flexible-tip catheters and 3D EAM achieves ~97% acute success.
Why the study?
Data regarding the use of irrigated flexible-tip catheters and three-dimensional electroanatomical mapping for AVNRT ablation are scant, prompting evaluation of this novel approach's long-term efficacy and safety.
Does catheter ablation using irrigated flexible-tip catheters combined with 3D EAM safely and effectively treat patients with AVNRT?
Cohort (n=150)
Does catheter ablation using irrigated flexible-tip catheters combined with 3D EAM safely and effectively treat patients with AVNRT?
Catheter ablation of AVNRT using irrigated flexible-tip catheters and 3D EAM is highly effective acutely (96.7% success) and safe long-term with no AV block requiring pacing.
Supports high acute success for AVNRT ablation with these tools; leaves open randomized confirmation of long-term durability.
BACKGROUND: Transcatheter ablation is the standasrd treatment for atrioventricular nodal re-entrant tachycardia (AVNRT). However, different techniques are available. Data about the use of irrigated flexible-tip catheters and three-dimensional electroanatomical mapping (3D EAM) for AVNRT ablation are scant. The aim of this study was to evaluate in long-term follow-up efficacy and safety of a novel approach for AVNRT treatment. METHODS: This is a cohort single arm study with long-term follow-up. Patients with AVNRT were treated with catheter ablation by means of irrigated flexible-tip catheters combined with 3D EAM. RESULTS: One-hundred-and-fifty patients were enrolled and followed-up for a median of 38 months (minimum 12, maximum 74). Acute procedural success rate was 96.7% (145/150 patients). During follow-up, 11 patients had arrhythmia recurrences (7.3%). No patient developed atrioventricular conduction block with need for pacemaker implantation (0%). Fourteen patients died during follow-up (9.3%). CONCLUSIONS: Acute procedural success and long-term follow-up show that AVNRT could be safely and effectively treated with irrigated flexible-tip catheters and 3D EAM.
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Malagù et al. (2021) conducted a cohort in Atrioventricular nodal re-entrant tachycardia (AVNRT) (n=150). Catheter ablation with irrigated flexible-tip catheters and 3D EAM was evaluated on Acute procedural success rate. Catheter ablation of AVNRT using irrigated flexible-tip catheters and 3D EAM achieved an acute procedural success rate of 96.7% with a 7.3% arrhythmia recurrence rate over a median 38 months.
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