What does this research mean for the field?

During temperature-controlled radiofrequency ablation, increased convective cooling of the electrode tip results in larger lesion dimensions and higher power consumption, with power consumption being a positive predictor of lesion volume. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

January 1, 1998Pacing and Clinical Electrophysiology

Lesion Size in Relation to Ablation Site During Radiofrequency Ablation

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Why the study?

Does ablation site and convective cooling affect lesion size and power consumption during temperature-controlled radiofrequency ablation?

Population

Anaesthetised pigs (in vivo left ventricle) and tissue bath (in vitro)

Comparison

Temperature-controlled radiofrequency ablation… vs Ablation at apical sites or with lower flow…

Design

Preclinical

Authors

HPHelen Høgh PetersenUniversity of Copenhagen XCXu ChenZhejiang International Studies University APAdrian PietersenElectrophysiology

Discussion

Member takes

Implication

Animal data on site-specific lesions should not yet alter clinical ablation; leaves open convective cooling effects on power titration in temperature-controlled RF.

Structured PICO

Does ablation site and convective cooling affect lesion size and power consumption during temperature-controlled radiofrequency ablation?

Population

Anaesthetised pigs (in vivo left ventricle) and tissue bath (in vitro)

Intervention

Temperature-controlled radiofrequency ablation at septal sites (in vivo) or with increased flow velocity (in vitro) with target temperature 80 degrees C

Comparator

Ablation at apical sites (in vivo) or with lower flow velocity (in vitro)

Outcome

Lesion dimensions (volume, depth, width), obtained tip temperature, and power consumptionsurrogate

Convective cooling significantly impacts lesion size and power consumption during temperature-controlled radiofrequency ablation, with power consumption being a better predictor of lesion volume than tip temperature.

Cite This Study

Petersen et al. (1998) studied this question.

synapsesocial.com/papers/6a1c4aec1567d2fc4d5fe448 https://doi.org/10.1111/j.1540-8159.1998.tb01114.x

Topics

AF ablation outcomes

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Implication

Animal data on site-specific lesions should not yet alter clinical ablation; leaves open convective cooling effects on power titration in temperature-controlled RF.

Lesion Size in Relation to Ablation Site During Radiofrequency Ablation

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Topics

Lesion Size in Relation to Ablation Site During Radiofrequency Ablation

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider