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Effects of diode laser setting for laryngeal surgery in a rabbit model

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Date
2019-05
Author
Arroyo-Ramos, Helena Hotz
Author
Neri, Larissa
Author
Mancini, Marilia Wellichan
Author
Duarte Neto, Amaro Nunes
Author
Mauad, Thais
Author
Imamura, Rui
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Artigo
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Abstract
PURPOSE: To study the damaging effect of different diode laser settings on vocal folds 7 days after injury in a rabbit model. METHODS: Twenty-one male New Zealand white rabbits were randomized into three groups with seven animals per group. A 980-nm diode laser was used to create a single spot injury in each vocal fold. Different modulation frequencies (10 Hz versus 1000 Hz) in pulsed mode, different powers (3 W versus 5 W), and distinct wave modes of radiation (pulsed versus continuous) were compared. RESULTS: The extent of the inflammatory infiltrate and ablation crater were greater when using 5-W optical power compared with 3 W. The extent and depth of the inflammatory infiltrate, and the width and depth of the ablation crater were greater with continuous wave mode compared with pulsed mode. The density of collagen fibers only increased when using the laser in continuous wave mode. CONCLUSION: The use of the 980-nm diode laser with an output power of 5 W produced an increased extent of thermal injury compared to an output power of 3 W and, more importantly, using continuous rather than pulsed wave mode significantly increased the extent and depth of thermal injury in rabbit vocal folds.
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Eur Arch Otorhinolaryngol. 2019 May;276(5):1431-1438. doi: 10.1007/s00405-019-05344-5.
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https://doi.org/10.1007/s00405-019-05344-5
Subject
Larynx
 
Vocal fold
 
Laser injury
 
Wound healing
 
Diode laser
 
Endolaryngeal surgery
 
URI
http://digital.bibliotecaorl.org.br/handle/forl/428
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Contact Us | Send Feedback

Divisão de Biblioteca e Documentação do Departamento
de Otorrinolaringologia da Faculdade de Medicina USP

Rua Artur de Azevedo, 46 CEP: 05404-000 São Paulo/SP - Brasil

Tel: (11) 3062-4097 Email: biblioteca@forl.org.br

Medicina USPFORL
Desenvolvido por Logo DGL Sistemas