Key result
The high-density mapping catheter identified significantly more residual gaps in pulmonary vein isolation lines (81.8% of cases) compared to 10-pole (36.7%) and 20-pole (38.9%) circular mapping catheters (p=0.015).
Why the study?
Tools and techniques for confirming pulmonary vein isolation vary, and whether specific combinations provide greater sensitivity for identifying gaps periprocedurally is unclear.
Does high-density mapping improve acute detection of gaps in PVI lines compared to traditional workflows in patients undergoing AF ablation?
Population
139 AF ablation cases
Comparison
High-density mapping catheter vs circular mapping catheters and pacing ablation lines
Design
Post-hoc analysis of prospectively collected procedural data
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Circular mapping catheters may miss residual PVI gaps; leaves open whether high-density mapping improves long-term outcomes.
Observational (n=139)
Yes
Does high-density mapping improve acute detection of gaps in PVI lines compared to traditional workflows in patients undergoing AF ablation?
Absolute Event Rate: 81.8% vs 38.9%
p-value: p=0.015
High-density mapping catheters appear to significantly improve the acute periprocedural detection of gaps in pulmonary vein isolation lines compared to traditional circular mapping catheters and pacing techniques.
A 2020 study conducted an observational in Atrial Fibrillation (n=139). High-density mapping catheter (Advisor HD Grid) vs. Circular mapping catheters (10-pole and 20-pole) was evaluated on Incidence of gaps detected by pulmonary vein isolation confirmation techniques (p=0.015). The high-density mapping catheter identified significantly more residual gaps in pulmonary vein isolation lines (81.8% of cases) compared to 10-pole (36.7%) and 20-pole (38.9%) circular mapping catheters (p=0.015).
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