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Radiofrequency induced lesion characteristics according to force-time integral in experimental model.

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Abstract
Contact force (CF)-sensing technology has enabled accurate real-time CF measurement in tissue. Average CF, which is quantified by the force?time integral (FTI), correlates with lesion volume.

Little is known about which of the time and force factors that compose FTI plays a more important role and which is a better index for predicting lesion size, FTI, or force?power?time index (FPTI). Investigators sought to identify a better index for predicting radiofrequency ablation lesion formation with experimental model.

Radiofrequency current was delivered to the swine skeletal muscle at radiofrequency energy current was delivered at 4 fixed power settings (15, 25, 30, and 40 W) for 6 variable time durations (5, 10, 20, 30, 40, and 50 s) with 6 variable CF settings (5, 10, 20, 30, 40, and 50 g). At each setting, the following parameters were evaluated:


(1)
transmural lesion depth,

(2)
lesion width, and

(3)
lesion volume.



Between FTI factors, the time factor was more important than the force factor for lesion formation. The area under the curve was greater for FPTI (0.943) than for FTI (0.870). On univariate linear regression analysis, the explanatory power of the linear regression model was better explained by FPTI (56.4%) than FTI (32.1%).

Under the same FTI condition, the time factor had a greater effect on lesion formation. When power was included, the power factor had a greater effect on lesion formation and steam pop.
Author(s)
김유리이우석최기준황유미
Issued Date
2021
Type
Article
Keyword
3400Abridged Index Medicuscardiac electrophysioloycatheter ablationcatheter ablationQuality Improvement Studyradiofrequency ablation
DOI
10.1097/MD.0000000000025126
URI
https://oak.ulsan.ac.kr/handle/2021.oak/7211
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7969321&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Radiofrequency%20induced%20lesion%20characteristics%20according%20to%20force-time%20integral%20in%20experimental%20model.&offset=0&pcAvailability=true
Publisher
MEDICINE
Location
미국
Language
영어
ISSN
0025-7974
Citation Volume
100
Citation Number
10
Citation Start Page
e25126
Citation End Page
e25126
Appears in Collections:
Medicine > Medicine
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