The optimal ablation setting for a local impedance guided catheter in an in vitro experimental model
| العنوان: | The optimal ablation setting for a local impedance guided catheter in an in vitro experimental model |
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| المؤلفون: | Kenta Tsutsui, Naokata Sumitomo, Shintaro Nakano, Shiro Iwagana, Hitoshi Mori, Yoshifumi Ikeda, Toshihiro Muramatsu, Hidehira Fukaya, Daisuke Kawano, Kazuo Matsumoto, Ritsushi Kato |
| المصدر: | Journal of Cardiovascular Electrophysiology. 32:2069-2076 |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Catheters, Swine, business.industry, Radiofrequency ablation, medicine.medical_treatment, Drop (liquid), Models, Theoretical, Ablation, law.invention, Lesion, Steam, Catheter, Volume (thermodynamics), law, Physiology (medical), Catheter Ablation, Electric Impedance, medicine, Animals, Cutoff, medicine.symptom, Cardiology and Cardiovascular Medicine, Nuclear medicine, business, Lead (electronics) |
| الوصف: | Background The local impedance (LI) reflects the electrical catheter-tissue coupling and correlates with the local tissue temperature. However, there have been few clinical studies showing the recommended method for LI monitoring catheters. This study aimed to investigate the optimal ablation setting for this catheter in an in vitro experimental model. Methods LI monitoring catheters were used in an excised swine heart experimental model. The tissue contact force (CF) was directly monitored from an external weight scale. Radiofrequency ablation was performed with a combination of various energy power settings (30, 40, and 50W), and various CFs (10, 30, and 50g) for 60 seconds. The correlation between the LI-related indexes, power, and CF with the lesion formation was statistically analyzed. Results A positive correlation between the LI or lesion formation and CF was observed under all powers. Although the LI drop always correlated with the maximum lesion depth, lesion diameter, and lesion volume, the coefficient of the correlation value was lower under a high CF (lesion depth, diameter, and volume; 10g, r=0.8064, r=0.8389, r=0.8477; 30g, r=0.7590, r=0.8063, r=0.8060; 50g r=0.5555, r=0.5701, and r=0.5678, respectively). Steam pops occurred only under a 50W ablation and the LI drop cutoff value for steam pops was 46Ω. Conclusion The same LI drop did not always lead to the same lesion size when the CF differed. Monitoring the LI and not exceeding 46Ω would be useful for a safe ablation. This article is protected by copyright. All rights reserved. |
| تدمد: | 1540-8167 1045-3873 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c75ce960b546b1cfb2cf474601f76654Test https://doi.org/10.1111/jce.15136Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....c75ce960b546b1cfb2cf474601f76654 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15408167 10453873 |
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