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The issues of surgical treatment of bilateral paralytic stenosis of the larynx do not lose their relevance today, since the proportion of patients suffering from this pathology is steadily increasing. Neurogenic disorders of laryngeal motor function most often occur due to previous surgical intervention on the thyroid gland and upper mediastinum. The predominant complaints of such patients are dyspnea, decreased tolerance to physical exertion and impaired lantern function. Thus, the main objectives in the treatment of chronic laryngeal stenosis are: restoration of the lumen of the vocal slit to ensure adequate respiratory function, prevention of respiratory failure and preservation of socially significant voice. The use of semiconductor lasers for laryngoplasty in bilateral paralytic stenoses of the larynx is a very common technique, however, there are no data in the literature on the use of semiconductor laser energy with a wave length of 445 nm for this surgical intervention. In their work the authors tried to show the advantages of the surgical treatment of bilateral paralytic laryngeal stenosis using 445 nm semiconductor laser, developed at the Saint Petersburg Research Institute of Ear, Throat, Nose and Speech, which allowed to reduce rehabilitation period of respiratory function and preserve socially significant voice, using a clinical example.

Objectives - to improve the effectiveness of treatment of patients with bilateral laryngeal paralysis by developing a treatment algorithm, justifying the surgical methods and the criteria for the effectiveness evaluation. Material and methods. 52 patients (including 49 women and 3 men) with bilateral larynx paralysis were examined and operated in 2017-2019. The age of the patients ranged from 27 to 71 years. 20 patients underwent the laryngoplasty, including the right-side myoaritenoidchordectomy with laterofixing of the opposite vocal fold with external access. 32 patients received the laryngoplasty with microsurgical technique under the direct support laryngoscopy. Results. The differentiated approach to the surgical treatment of patients with bilateral larynx paralysis allowed to decannulate 97% of patients in early postoperative period with restoration of the respiratory function and preservation of the voice function. In 2 patients it was impossible to form a physiological glottic chink due to a rough scar-dystrophic process in the surgery area. Conclusion. The preliminary use of tracheostomy tube is a factor that impairs the effectiveness of reconstructive surgical interventions in patients with bilateral laryngeal paralysis, if compared to patients with single-step tracheostomy and laryngoplasty. The long course of the bilateral laryngeal paralysis (more than 1 year) leads to persistent and irreversible pathological changes in the arytenoid cartilage and vocal folds. Minimally invasive techniques for the bilateral laryngeal paralysis treatment under the direct support laryngoscopy are the "gold standard" of global laryngology, if the indications for surgery are strictly observed. In all other cases, the patients are subject to a one-step reconstructive surgery with an open approach to the paralyzed voice fold.

Laryngeal paralysis is one of the causes of stenosis of the upper respiratory tract characterized by unilateral or bilateral motor damage in the larynx reflected in a dysfunction of vocal cords or their complete inability to move as a result of pathologic innervation of relevant muscles, ankylosis of cricoarytenoid joints and inflammation [1, 3]. Depending on the level of damage, paralysis is divided into central and peripheral, unilateral and bilateral.

Aim: To optimize the current algorithms of diagnosis and treatment of children with congenital laryngeal paralysis., Method: A retrospective study of case histories of patients with congenital laryngeal paralysis who were examined and treated at St. Petersburg State Pediatric Medical University., Results: For the period from 1995 to 2015, 30 children with various forms of congenital laryngeal paralysis were under medical supervision at the Clinic for Otorhinolaryngology at St. Petersburg State Medical University., Conclusion: In cases of stage 1-2 laryngeal stenosis in children older than 3 years 6 months, the chordarythenoidotomy may be the procedure of choice. In cases of stage 2 laryngeal stenosis, in children with tracheostomy, we consider laryngotracheoplasty with the insertion of costal autograft in the back wall of the larynx at the age of 4 years as the optimal choice.

The objective of the present study was to consider the currently available methods for the diagnostics and treatment of the patients presenting with bilateral paralysis of the larynx of various etiologies. We undertook the analysis of the publications in the domestic and foreign scientific literature concerning diagnosis and treatment of bilateral paralysis of the larynx. It was found that despite the existing modern high-tech diagnostic technologies and the variety of surgical methods for the treatment of this condition, the problem of diagnostics, management, and rehabilitation of the patients suffering from bilateral paralysis of the larynx remains a serious challenge for the researchers and clinicians that requires further investigation of this pathology. For the correct and timely diagnosis of bilateral paralysis of the larynx, the comprehensive evaluation of the functional state of the neuromuscular apparatus of the larynx is necessary. The key prerequisites for the success of the surgical intervention are its timeliness and the choice of the optimal surgical modalities.

Aim: the objective of the present study was to increase the functional effectiveness of the combined treatment of the patients presenting with bilateral laryngeal paralysis on the basis of the development of a medical diagnostic algorithm taking into consideration the peculiar etiological and pathogenic features of the clinical course of the disease. The study included 102 patients suffering from bilateral paralysis of the larynx. The duration of the disease varied from 2 months to 26 years. All the patients underwent the preoperative preparation followed by laryngoplasty surgery for unilateral myoaritenoidchordectomy. The patients who had no tracheostoma at admittance were treated by simultaneous tracheostomy and laryngoplasty. The study made it possible to identify the factors that exerted the adverse influence on the outcome of the operation, such as prolonged cannulation, a protracted course of the disease (for more than 1 year), longer periods of recovery of the external respiration function characteristics, increased duration of the hospitalization and rehabilitation periods that lasted over more than one year, and a rise in the number of the patients carrying the cannulas. Taken together, the proposed algorithm for the examination and treatment of the patients presenting with bilateral laryngeal paralysis, the early diagnostics of the disease, and the differential approach to its treatment made it possible to reduce the frequency of the immediate and long-term postoperative complication and decrease the duration of hospitalization and rehabilitation of the patients.