Key result
Successful AVNRT ablation in patients with persistent slow pathway conduction significantly decreased the AH interval (mean difference -68.1 msec; 95% CI -94.5 to -41.7; P<0.001).
Why the study?
Does successful AVNRT ablation alter slow pathway conduction characteristics in patients with persistent slow pathway conduction?
Population
30 patients with persistent slow pathway conduction following successful ablation for AV node reentrant…
Comparison
AVNRT ablation vs Pre-ablation characteristics
Design
Cohort
Authors
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Supports ablation-induced modification of slow pathway properties despite persistence; hypothesis-generating for recurrence risk.
Observational (n=30)
Does successful AVNRT ablation alter slow pathway conduction characteristics in patients with persistent slow pathway conduction?
Effect estimate: Mean difference -68.1 msec (95% CI -94.5, -41.7)
p-value: p=< 0.001
Successful AVNRT ablation alters slow pathway conduction characteristics, indicating a damaged or different slow pathway incapable of sustaining tachycardia despite persistent conduction.
Pósán et al. (2006) conducted an observational in AV node reentrant tachycardia (AVNRT) (n=30). AVNRT ablation vs. Pre-ablation was evaluated on AH interval for any given coupling interval (Mean difference -68.1 msec, 95% CI -94.5, -41.7, p=< 0.001). Successful AVNRT ablation in patients with persistent slow pathway conduction significantly decreased the AH interval (mean difference -68.1 msec; 95% CI -94.5 to -41.7; P<0.001).
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