Endolaryngeal surgery of benign vocal fold lesions with a 445 nm semiconductor laser: postoperative management

Krivopalov, A. A.; Шамкина, П. А.; Stepanova, Yu. E.; Koren, Eugen; Gotovyakhina, T. V.

doi:10.21518/2079-701x-2021-18-178-183

Medicinskij sovet

2021

DOI: 10.21518/2079-701x-2021-18-178-183

|View full text |Cite

Endolaryngeal surgery of benign vocal fold lesions with a 445 nm semiconductor laser: postoperative management

A. A. Krivopalov

П. А. Шамкина

Yu. E. Stepanova

et al.

Abstract: Introduction. Today the high prevalence of benign vocal fold lesions is shown (up to 55-70%). The possibilities of surgical management of this pathology are very extensive. Laser technologies are becoming more and more popular among high-tech treatment methods. However the comprehensive postoperative management of these patients is equally important.The aim of the study was to assess the features of the postoperative period in patients undergoing the endolaryngeal surgery using a semiconductor laser with a wav… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2022

2024

Publication Types

Select...

Article3

Relationship

Self Cite1

Independent2

Authors

Journals

Cited by 3 publications

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Surgical treatment using a laser with a wavelength of 445 nm in patients with chronic paralytic laryngeal stenosis

Panchenko,

Shamkina,

Krivopalov

et al. 2023

Bulletin of the Russian Military Medical Academy

View full text Add to dashboard Cite

The treatment of chronic paralytic laryngeal stenosis remains a relevant issue. It ranks second and accounts for 29.9% of chronic diseases of the laryngeal plexus. The number of affected patients has increased 10-fold over the past 10 years (20102020). Surgical treatment of chronic paralytic laryngeal stenosis is aimed at respiratory function restoration and the possibility of decanulation of the patient while maintaining vocal function. In the literature, the effectiveness of surgical treatment of patients with laryngeal stenosis varies greatly, ranging from 22% to 94%. We have proposed a technique for performing laryngoplasty in a patient with chronic paralytic laryngeal stenosis using a laser with a wavelength of 445 nm with a supply of inert gas (helium) in the operating field. When helium was injected into the operating field, the oxygen content at the laser exposure site decreased; thus, the effect of tissue carbonation was minimized, and thermal damage to surrounding tissues was reduced. Owing to the presence of gas, the smoke generated during the operation was quickly removed from the operating field, which provided good visualization. The properties of the aforementioned laser ensure a bloodless operating field, increasing the accuracy of surgical intervention. When using this laser, thermal damage to the surrounding tissues is no more than 0.6 cm in depth. This minimizes inflammatory reactions in the larynx in the postoperative period and promotes faster patient rehabilitation. The proposed volume of resection of the anatomical structures of the larynx was as follows: the posterior two-thirds of the vocal muscle and the anterior two-thirds of the body of the arytenoid cartilage, with the preservation of the mucous membrane to close the surgical wound, which ensures healing by primary tension and creates the necessary lumen of the glottis for sufficient breathing and allows for the maintenance acceptable voice function for patient communication. A laser with a 445-nm wavelength and a flap for closing the surgical wound used during the operation can speed up the recovery process and reduce the risk of relapse. This technique can be a method of choice for the treatment of patients with paralytic laryngeal stenosis.

show abstract

Surgical treatment using a laser with a wavelength of 445 nm in patients with chronic paralytic laryngeal stenosis

Panchenko,

Shamkina,

Krivopalov

et al. 2023

Bulletin of the Russian Military Medical Academy

View full text Add to dashboard Cite

show abstract

Video endoscopic methods of laryngeal examination in modern phoniatry

Stepanova

Gotovyakhina

2022

Medicinskij sovet

Self Cite

View full text Add to dashboard Cite

Introduction. Modern diagnostics of laryngeal diseases is based on the use of video endoscopic technologies. The authors of the article, having almost thirty years of experience with various methods of video endoscopy, proposed a classification of video endoscopic methods of laryngeal examination. Objective. To develop an algorithm for the application of various video endoscopic methods of laryngeal examination in voice professionals with functional and organic dysphonia. Materials and methods. From 2020 to 2022, 2308 patients aged 18 to 80 years (43.2 ± 11.5) were examined in the phoniatric department of the St. Petersburg Research Institute of ENT. There were 1424 women (61,7 %), 884 men (38,3 %) people. Functional dysphonia was detected in 705 (30,5 %) people, acute and chronic laryngitis in 668 (28,9 %), tumor-like formations in 436 (18,9 %), the remaining nosological forms were diagnosed in 499 (21,7). All the patients turned out to be representatives of voice-speaking professions and complained of dysphonia.For videolaryngoscopy, videolaryngostroboscopy, autofluorescence endoscopy, NBI–endoscopy, equipment from various manufacturers was used. Results. An algorithm for the application of video endoscopic research methods in persons of voice-speech professions with dysphonia has been developed. Overview videolaryngoscopy and videostroboscopy were mandatory research methods for all patients with complaints of voice function. The use of these two methods proved to be sufficient for the diagnosis of functional dysphonia, paresis and paralysis, congenital malformations of the larynx, scar stenosis. In-depth diagnostics and differential diagnostics of tumor-like formations, various forms of chronic laryngitis, benign and malignant formations, in addition to videolaryngoscopy and videostroboscopy, included autofluorescence endoscopy or NBI endoscopy, which revealed the earliest stages of the pathological process. Conclusions. Only the complex application of various methods of video endoscopy of the larynx provided timely diagnosis and early treatment of dysphonia, maximum restoration of voice function, and, consequently, the preservation of professional longevity by persons of voice-speech professions.

show abstract

Experimental study of the interstitial effect of a semiconductor laser with a wavelength of 445 nm on a biological model

Ivanov,

Zakharova,

Shabalin

et al. 2024

Medicinskij sovet

View full text Add to dashboard Cite

Introduction. This study presents the results of interstitial exposure of a semiconductor laser with a wavelength of 445 nm to biological tissue samples at different pulsed wave power in a constant mode, with a contact method.Aim. To study the interstitial effect of a semiconductor laser with a wavelength of 445 nm on experimental tissue samples in a constant mode at different power.Materials and methods. As an experimental sample, we used biological tissue with a developed vascular structure in the form of pig liver. The source of laser radiation was a semiconductor laser with a wavelength of 445 nm, with a power range from 0.5 to 4 watts. When working with biological tissue samples, we evaluated their external and internal changes after laser exposure. The exposure time during interstitial exposure was 1 mm/sec with a 20 mm immersion depth of the laser fiber into the fabric. The results of the macro and microscopic picture were evaluated using histological examination and morphometry of the zones of destruction and coagulation necrosis, on a transverse section of the tissue.Results. The results of an experimental study indicate that interstitial laser exposure has a pronounced coagulation effect combined with a cutting effect. The optimal combination of coagulation and cutting effect of exposure, accompanied by visual contractility of the tissue, without excessive carbonation at a power of 3.0 watts.Conclusion. The use of interstitial exposure of a semiconductor laser with a wavelength of 445 nm on experimental tissue samples in a constant mode at different power showed the predominance of the coagulation effect in combination with the cutting effect with a pronounced reduction in tissue volume. Experiments have shown that the power of 3 W is the optimal power of laser exposure in the interstitial method, in which there is a pronounced reduction in the volume of the studied drug without excessive carbonation.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Endolaryngeal surgery of benign vocal fold lesions with a 445 nm semiconductor laser: postoperative management

Cited by 3 publications

References 21 publications

Surgical treatment using a laser with a wavelength of 445 nm in patients with chronic paralytic laryngeal stenosis

Surgical treatment using a laser with a wavelength of 445 nm in patients with chronic paralytic laryngeal stenosis

Video endoscopic methods of laryngeal examination in modern phoniatry

Experimental study of the interstitial effect of a semiconductor laser with a wavelength of 445 nm on a biological model

Contact Info

Product

Resources

About