Why the study?
Does catheter-to-tissue contact force correlate with impedance fall during atrial fibrillation ablation?
Population
35 patients who underwent atrial fibrillation ablation
Comparison
Radiofrequency ablation with a fixed power… vs Different levels of contact force
Design
Cohort
Follow-up
60 seconds (duration of ablation)
Authors
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Supports contact force sensing in AF ablation; leaves open prospective validation of impedance thresholds.
Does catheter-to-tissue contact force correlate with impedance fall during atrial fibrillation ablation?
During atrial fibrillation ablation, catheter contact force correlates significantly with impedance fall, suggesting that forces >5 g produce adequate lesion formation while forces >20 g risk tissue overheating.
Bortoli et al. (2013) studied this question.
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