Posterior laryngofissure using a surgical contact diode laser: an experimental feasibility study

Menezes, Arteiro Queiroz; Cardoso, Paulo Francisco Guerreiro; Nagao, Christopher Kengo; Minamoto, Hélio; Bibas, Benoit Jacques; Rodrigues, Isaac de Faria Soares; Otoch, José Pinhata; Dolhnikoff, Marisa; Canzian, Mauro; Mancini, Marília Wellichan; Pêgo-Fernandes, Paulo Manuel

doi:10.1007/s10103-019-02729-0

Cited by 3 publications

(5 citation statements)

References 20 publications

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“…The power settings used for the 980 nm CDL and 1470 nm CDL derived from preliminary studies 6,8,[19][20][21] . Theoretically, the 1470 nm CDL at low power outperforms the 980 nm CDL because its absorption coefficient (μ A ) by water molecules of soft tissue chromophores is 50 times higher than 980 nm CDL.…”

Section: Discussionmentioning

confidence: 99%

“…A previous study showed the feasibility, safety, and effectiveness of the 980 nm CDL carried by flexible fiber optics in the power range of P peak of 10W to 20W (P mean 5W and 10W, respectively) for posterior laryngeal split 6 . The energy absorption of the 980 nm CDL is centered in the hemoglobin.…”

Section: Discussionmentioning

confidence: 99%

“…As an attempt to reduce local surgical trauma, a minimally invasive approach has been proposed using an endoscopic technique and a photonic energy source such as the surgical contact diode laser (CDL) 4 , 5 . It has been demonstrated experimentally that the open posterior laryngeal split procedure (laryngofissure) can be performed safely and effectively using a 980 nm CDL in pulsed mode with minimal lateral thermal damage to the surrounding tissues if compared to electrocautery, with greater thermal injury 6 , 7 . Reducing the local tissue trauma can also enhance the healing process, enabling a better and faster functional recovery.…”

Section: Introductionmentioning

confidence: 99%

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Comparison between contact diode laser with 980 nm and 1470 nm wavelengths for posterior laryngofissure in pigs

Rodrigues,

Guerreiro Cardoso,

Nepomuceno da Silva

et al. 2024

Sci Rep

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To compare two different wavelengths of the surgical contact diode laser (CDL) for producing a posterior laryngofissure in in-vivo pigs. Anesthetized pigs underwent a tracheostomy and an anterior laryngofissure through a cervicotomy. They were randomly selected for the CDL wavelength and Power, according to the peak of Power set at device (980nm wavelength: Ppeak power of 10 W, 15 W, and 20 W, or 1470 nm wavelength: Ppeak 3 W, 5 W, 7 W, 10 W). At the end of the experiment, the laryngotracheal specimen was extracted and sent for histology and morphometry measurements (incision size, depth, area, and lateral thermal damage). Hemodynamic data and arterial blood gases were recorded during the incisions. Statistical analysis of the comparisons between the parameters and groups had a level of significance of p < 0.05. Twenty-six pigs were divided into CDL 980 nm (n = 11) and 1470 nm (n = 15). There was a greater incision area at the thyroid level in the 980 nm CDL and a wider incision at the trachea level, with a larger distance between mucosa borders. There were no significant differences in the area of lateral thermal damage between the two groups and neither difference among the power levels tested. Both wavelengths tested showed similar results in the various combinations of power levels without significant differences in the lateral thermal damage. The posterior laryngofissure incision can be performed by either of the wavelengths at low and medium power levels without great difference on lateral thermal damage.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison between contact diode laser with 980 nm and 1470 nm wavelengths for posterior laryngofissure in pigs

Rodrigues,

Guerreiro Cardoso,

Nepomuceno da Silva

et al. 2024

Sci Rep

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“…Próteses traqueais aliviam a obstrução causada por lesões de vias aéreas benignas e malignas, em pacientes não candidatos para ressecção e reconstrução cirúrgica [8][9][10][11] . Estas próteses podem ser de silicone, metálicas ou híbridas, e são colocadas habitualmente sob anestesia geral [12][13][14][15][16][17][18] .…”

Section: Introductionunclassified

“…Em doenças benignas, a rotina da disciplina de Cirurgia Torácica da Faculdade de Medicina da Universidade de São Paulo é a colocação de próteses de silicone, sejam elas endotraqueais, ou do tipo Tubo T de Montgomery. Estas próteses permitem o fluxo translaríngeo de ar, o que leva a uma via aérea umidificada, e preservação da voz, sem a necessidade de traqueostomia na maioria dos casos [1][2][3][4][5][6][7][8][9][10][11][12][13][14] .…”

Section: Introductionunclassified

Preditores de complicações após colocação de tubo T de Montgomery em pacientes com estenose traqueal benigna

Bibas

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Agradeço a Deus e a meus pais, Roberto Abraham Bibas e Maria Luiza Lopes Bibas por todo amor e pela ajuda, desde sempre (e até hoje). Agradeço a minha mãe pelo amor incondicional e por transmitir para mim valores atemporais: honestidade, trabalho, e educação. Como ela sempre dizia ´´Você pode perder tudo o que ganhou na vida, menos aquilo que aprendeu´´. Não coincidentemente, digo o mesmo hoje para meu filho. Obrigado! Meu pai, exemplo de pai e cirurgião, foi a grande fonte insipradora para seguir na profissão e na especialidade. Cirurgião brilhante e pai excepcional. Me mostrou que a cirurgia tem que ser um procedimento simples, objetivo e prático. Tenho muito orgulho da sua trajetória pessoal e de ser seu filho, e tento aos poucos construir a carreira minha (e vida) para que seja ao menos tão bonita quanto a sua. Je t´embrasse. Dedico esta tese também, em grande parte, à minha esposa Mariana. Após quase 20 anos de convivência, continuamos a desenvolver a nossa relação, que se modifica e melhora cada dia. Crescimento profissional, filho, casa nova, doutorado, projetos multimídia... Os últimos anos foram desafiadores, porém superamos diversos obstáculos com serenidade e tranquilidade. Obrigado pelo apoio, conselhos, suporte, carinho e amor. Te amo cada vez mais! Por último, porém não menos importante, dedico este tese ao meu filho Rui. Hoje, aos 9 anos de idade, percebo traços mais claros de sua individualidade e fico feliz que você se desenvolva com autonomia, garra, personalidade e gênio forte. Sua alegria me contagia e poder ser seu pai é para mim, aprendizado e orgulho diário. Te amo.

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Contact Diode Laser for Posterior Laryngofissure in Pigs: Comparison Between 980nm and 1470nm Wavelengths

Rodrigues,

Cardoso,

Silva

et al. 2024

Preprint

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Objective: To compare two different wavelengths of the surgical Contact Diode Laser (CDL) for producing a posterior laryngofissure in live pigs. Methods: Anesthetized pigs underwent a tracheostomy and an anterior laryngofissure through a cervicotomy. They were randomly selected for the CDL wavelength and power (980nm wavelength: Ppeak power of 10W, 15W, and 20W, or 1470nm wavelength: Ppeak 3W, 5W, 7W, 10W). At the end of the experiment, the laryngotracheal specimen was extracted and sent for histology and morphometry measurements (incision size, depth, area, and lateral thermal damage). Hemodynamic data and arterial blood gases were recorded during the incisions. Statistical analysis of the comparisons between the parameters and groups had a level of significance of p <0.05. Results: Twenty-six pigs were divided into CDL 980nm (n=11) and 1470nm (n=15). There was a larger incision area at the thyroid level in the 980nm CDL and a larger distance between borders in the tracheal level. There were no significant differences in the lateral thermal damage between the two groups and among the power levels tested. Conclusion: Both wavelengths tested showed similar results in the various combinations of power levels without significant differences in the lateral thermal damage. The posterior laryngofissure incision can be performed safely by combining both wavelengths at low and medium power levels.

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Posterior laryngofissure using a surgical contact diode laser: an experimental feasibility study

Cited by 3 publications

References 20 publications

Comparison between contact diode laser with 980 nm and 1470 nm wavelengths for posterior laryngofissure in pigs

Comparison between contact diode laser with 980 nm and 1470 nm wavelengths for posterior laryngofissure in pigs

Preditores de complicações após colocação de tubo T de Montgomery em pacientes com estenose traqueal benigna

Contact Diode Laser for Posterior Laryngofissure in Pigs: Comparison Between 980nm and 1470nm Wavelengths

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