Key result
In a canine model, acute pulmonary vein isolation using a second-generation cryoballoon was achieved in 90% of veins, with tissue temperatures dependent on distance to the balloon surface (P<0.001).
Why the study?
How do distance from the balloon and peri-balloon blood flow leaks affect tissue thermodynamics and chronic isolation success during PVI using a second-generation cryoballoon in a canine model?
Population
20 dogs (canine in vivo model) undergoing pulmonary vein isolation (PVI)
Design
Preclinical
Follow-up
mean 48±16 days
Authors
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May inform optimal balloon positioning during cryoballoon PVI; leaves open whether minimizing leaks improves chronic isolation in patients.
How do distance from the balloon and peri-balloon blood flow leaks affect tissue thermodynamics and chronic isolation success during PVI using a second-generation cryoballoon in a canine model?
In a canine model of cryoballoon PVI, tissue cooling depends on distance from the balloon, and peri-balloon blood flow leaks contribute to chronic PV reconnection.
Takami et al. (2014) studied Pulmonary vein isolation (n=20). Second-generation cryoballoon ablation was evaluated on Acute pulmonary vein isolation. In a canine model, acute pulmonary vein isolation using a second-generation cryoballoon was achieved in 90% of veins, with tissue temperatures dependent on distance to the balloon surface (P<0.001).
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