Key result
Cryoablation achieved similar procedural success to radiofrequency ablation for AVNRT (93% vs 91%) but required significantly fewer applications (median 2 vs 7, p<0.005).
Why the study?
Does transvenous cryothermal ablation improve procedural success and safety compared to radiofrequency ablation in patients with AVNRT?
Population
102 patients with recurrent narrow QRS-complex tachycardia suggestive of AVNRT
Comparison
Transvenous cryothermal ablation vs Radiofrequency (RF) ablation
Design
RCT, Randomized to either RF or cryoablation before a diagnostic study
Follow-up
mean 13+/-7 months
Authors
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Cryoablation may streamline AVNRT procedures; confirms similar success with fewer applications than radiofrequency in this RCT.
RCT (n=102)
Does transvenous cryothermal ablation improve procedural success and safety compared to radiofrequency ablation in patients with AVNRT?
Absolute Event Rate: 93% vs 91%
Cryoablation is as effective and safe as radiofrequency ablation for AVNRT, requiring fewer applications and avoiding accelerated junctional rhythm.
KIMMAN et al. (2004) conducted an RCT in atrioventricular nodal re-entrant tachycardia (AVNRT) (n=102). Cryoablation vs. Radiofrequency (RF) ablation was evaluated on Procedural success. Cryoablation achieved similar procedural success to radiofrequency ablation for AVNRT (93% vs 91%) but required significantly fewer applications (median 2 vs 7, p<0.005).
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