Key result
Fast pathway ablation successfully treated tachycardia and preserved anterograde AV nodal conduction in 5 of 5 patients with AVNRT and first-degree AV block.
Why the study?
In patients with AVNRT and long PR intervals, slow pathway ablation can lead to AV block due to absent robust anterograde fast pathway conduction.
Does fast pathway ablation prevent AV block and successfully treat tachycardia in patients with AVNRT and poor anterograde fast pathway conduction?
Comparison
AV nodal fast pathway ablation vs slow pathway ablation
Design
Case series
Authors
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May support fast pathway ablation as alternative in AVNRT with first-degree AV block; leaves open randomized comparison to slow pathway ablation.
Case Report (n=6)
No
Does fast pathway ablation prevent AV block and successfully treat tachycardia in patients with AVNRT and poor anterograde fast pathway conduction?
Absolute Event Rate: 100% vs 0%
In patients with AVNRT and poor anterograde fast pathway conduction, retrograde fast pathway ablation is a reasonable alternative to standard slow pathway ablation to avoid AV block and pacemaker dependency.
Tuohy et al. (2019) conducted a case report in Atrioventricular nodal re-entrant tachycardia (AVNRT) (n=6). Fast pathway (FP) ablation vs. Slow pathway (SP) ablation was evaluated on Successful treatment of tachycardia with preservation of anterograde AV nodal conduction. Fast pathway ablation successfully treated tachycardia and preserved anterograde AV nodal conduction in 5 of 5 patients with AVNRT and first-degree AV block.
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