Key result
In numerical models, temperature-controlled RF ablation produced up to 49.4% larger lesions at high blood velocity sites, whereas power-controlled ablation produced larger lesions at low velocity sites.
Why the study?
How do regional blood velocities and ablation modes (temperature vs. power-controlled) affect lesion size and tissue heating during RF catheter ablation?
Population
Finite element method computational model of intracardiac tissue exposed to different regional blood…
Comparison
Radio-frequency catheter ablation in… vs Different regional blood velocities and ablation…
Design
Preclinical
Authors
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Regional blood velocity may dictate optimal RF ablation mode; modeling data leave clinical adoption open pending in vivo confirmation.
How do regional blood velocities and ablation modes (temperature vs. power-controlled) affect lesion size and tissue heating during RF catheter ablation?
Computational modeling demonstrates that regional blood velocity significantly impacts RF ablation lesion size, with temperature-controlled modes producing larger lesions in high-flow areas and power-controlled modes producing larger lesions in low-flow areas.
Tungjitkusolmun et al. (2001) studied Radio-frequency catheter ablation. Radio-frequency catheter ablation vs. Temperature-controlled vs power-controlled mode at high vs low blood velocity sites was evaluated on Lesion volume. In numerical models, temperature-controlled RF ablation produced up to 49.4% larger lesions at high blood velocity sites, whereas power-controlled ablation produced larger lesions at low velocity sites.
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