Evaluation of lesion characteristics and baseline impedance on high-power short-duration radiofrequency catheter ablation using computer simulation.
Baseline impedance
Computer simulation
High-power
Radiofrequency ablation
Short-duration
Journal
Heart and vessels
ISSN: 1615-2573
Titre abrégé: Heart Vessels
Pays: Japan
ID NLM: 8511258
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
03
05
2023
accepted:
02
08
2023
medline:
27
10
2023
pubmed:
31
8
2023
entrez:
31
8
2023
Statut:
ppublish
Résumé
Myocardium baseline impedance (BI) is an important factor in ablation effectiveness. This study examined the performance of low-power and long-duration (LPLD), high-power and short-duration (HPSD) ablation at different BIs by computer simulation. A 3D model of the ablation region was constructed for simulation, and in vitro experiments were performed to validate the simulation. Three ablation power and duration configurations of 30 W/30 s, 50 W/10 s, and 90 W/5 s were used for simulation with BI values of 90, 100, 110, 120, 130, and 140 Ω. Roll-off time and ablation volume were measured to evaluate ablation results. The simulation is consistent with the in vitro experiments. When BI is changed from 90 [Formula: see text] to 140 [Formula: see text], the lesion volume over 50 °C with BI of 140 [Formula: see text] was reduced by 6.3%, 6.7%, and 7.3% for 30 W/30 s, 50 W/10 s, and 90 W/5 s configurations, respectively, and the lesion volume over 100 °C was reduced by 62.8%, 49.7%, and 22.5% under 30 W/30 s, 50 W/10 s, and 90 W/5 s, respectively. Simulation results revealed that HPSD (vHPSD) and LPLD ablation were more affected by changes in BI in the lesion volumes over 50 °C and 100 °C, respectively, and demonstrated that resistive and conductive heating were the main heating effects in HPSD (vHPSD) and LPLD, respectively.
Identifiants
pubmed: 37650926
doi: 10.1007/s00380-023-02300-6
pii: 10.1007/s00380-023-02300-6
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1459-1467Subventions
Organisme : Japan Society for the Promotion of Science Kakenhi Basic Research Fund
ID : 18K11532
Organisme : Japan Society for the Promotion of Science Kakenhi Basic Research Fund
ID : 21K10287
Organisme : Competitive Research Fund of the University of Aizu
ID : 2022-P-12
Informations de copyright
© 2023. Springer Nature Japan KK, part of Springer Nature.
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