Key result
Exit block during isolated premature depolarizations was observed in 50% of arrhythmogenic pulmonary veins versus 0% of nonarrhythmogenic veins (P<0.01), serving as a marker for arrhythmogenic foci.
Why the study?
What is the prevalence and significance of exit block during arrhythmias arising in pulmonary veins in patients with atrial tachycardia/fibrillation?
Population
25 patients with atrial tachycardia/fibrillation who underwent successful ablation of 28 arrhythmogenic foci…
Comparison
Evaluation of exit block in pulmonary veins… vs Nonarrhythmogenic pulmonary veins (n=40)
Design
Cohort
Authors
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Exit block from pulmonary veins is a common observation during tachycardias generated within pulmonary veins and serves as an indicator of an arrhythmogenic pulmonary vein.
Observational (n=25)
What is the prevalence and significance of exit block during arrhythmias arising in pulmonary veins in patients with atrial tachycardia/fibrillation?
Absolute Event Rate: 50% vs 0%
p-value: p=<0.01
Exit block from pulmonary veins is a common observation during tachycardias generated within pulmonary veins and serves as an indicator of an arrhythmogenic pulmonary vein.
Tse et al. (2000) conducted an observational in Atrial tachycardia/fibrillation (n=25). Evaluation of exit block vs. Nonarrhythmogenic pulmonary veins was evaluated on Prevalence of exit block during isolated premature depolarizations (p=<0.01). Exit block during isolated premature depolarizations was observed in 50% of arrhythmogenic pulmonary veins versus 0% of nonarrhythmogenic veins (P<0.01), serving as a marker for arrhythmogenic foci.
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