التفاصيل البيبلوغرافية
| العنوان: |
Minimizing Thermal Damage During Thulium Laser-Assisted Partial Arytenoidectomy: Pulsed Versus Continuous Cutting in an Ex-Vivo Calf Model. |
| المؤلفون: |
Barnett, Erica, Heaton, James T., Petrillo, Robert H., Purnell, Philip, Burns, James A. |
| المصدر: |
Annals of Otology, Rhinology & Laryngology; Nov2023, Vol. 132 Issue 11, p1355-1360, 6p |
| مصطلحات موضوعية: |
LARYNGEAL surgery, HEAT, CARTILAGE, CATTLE, ANIMAL experimentation, LASER therapy, VOCAL cords, CHEMICAL elements, T-test (Statistics), COMPARATIVE studies, LACTATE dehydrogenase, RESEARCH funding |
| مستخلص: |
Objectives: The 2 µm-wavelength thulium laser is an effective cutter during partial arytenoidectomy, but thermal trauma can damage adjacent laryngeal tissue. Pulsing laser energy may reduce trauma when compared to continuous-wave cutting. This study measured temperature changes, thermal trauma, and time to complete partial arytenoidectomy, with and without pulsing, in an ex-vivo calf model. Methods: Tissue temperature and time to complete a trans-cartilaginous cut were measured during partial arytenoidectomy on ex-vivo calf vocal folds (N = 24) using a thulium laser in continuous-wave (CW, N = 12) and pulsed-wave (PW, N = 12) modes. Energy was 5 W for CW and PW cuts; pulse-widths were 250, 500, and 750 ms. Thermal damage was analyzed histologically by measuring the depth of lactate dehydrogenase (LDH) inactivation perpendicular to the laser-cut edge at the vocal process. Paired t-tests compared CW and PW modes. Results: Change in temperature was lower using CW (6.5°C) compared to PW modes (250 ms = 18°; 500 ms = 16°; 750 = 19°; P <.05). Trans-cartilaginous cuts were completed faster using CW (37 seconds) compared to PW (250 ms = 136 seconds; 500 ms = 61 seconds; 750 = 44 seconds; P <.05), and both modes delivered the same total Joules. The average depth of LDH depletion (thermal damage) was similar for all cuts. Conclusions: 1. Thulium laser cuts in continuous-mode unexpectedly produced less tissue heating yet created similar thermal damage than pulsed-mode cuts during simulated partial arytenoidectomy. 2. Trans-cartilaginous cuts were completed significantly faster in continuous-mode as compared to pulsed-mode cutting. 3. Pulsing the thulium laser does not minimize thermal damage compared to continuous wave cutting during thulium laser-assisted partial arytenoidectomy. [ABSTRACT FROM AUTHOR] |
|
Copyright of Annals of Otology, Rhinology & Laryngology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
