Publications by authors named "O A Pashchinina"

7 Publications

[Retrofacial approach to remove a rare chondromyxoid fibroma of the infralabyrinthine space].

Vestn Otorinolaringol 2021 ;86(4):106-110

The National Medical Research Center for Otorhinolaryngology of the Federal Medico-Biological Agency of Russia, Moscow, Russia.

A very rare case of 46-yaer-old woman with chondromyxoid fibroma (CMF) of infralabyrinthine area of temporal bone was described in this article. The only manifestation of this disease was a severe temporary pain in the postauricular area with irradiation in the occipital bone and headache during the last 3 months. A detail description of the CT scan and MRI data was presented. Tumor removing was performed through the retrofacial approach with combination of the microscopic and endoscopic assistance technique, which allows to had a good visualization and controlling of tumor separation from the vital structures with hearing and facial nerve function preserve. Also, we presented a brief review of literature with differential diagnosis of the CMF of the temporal bone, which conducted to minimize the diagnosis mismatches in the otologic and head and neck practice and to optimize the treatment of patients with such tumor.
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http://dx.doi.org/10.17116/otorino202186041106DOI Listing
September 2021

Spontaneous bone bed formation in pediatric cochlear implantation is associated with duration of implantation.

Int J Pediatr Otorhinolaryngol 2021 Aug 26;150:110897. Epub 2021 Aug 26.

Department of Otology and Lateral Skull Base, Federal State Budgetary Institution "National Medical Research Center of Otorhinolaryngology of the Federal Medico-Biological Agency of the Russian Federation", Moscow, Russia, 123182.

Objectives: This study investigated the long-term postoperative spontaneous formation of a bone bed in pediatric cochlear implant patients for whom no bone bed was drilled during the surgery.

Methods: A cross-sectional observational study of skull thickness under and on the edges of the cochlear implant receiver/stimulator in children with computed tomography (CT scan) ≥6 months after implantation was performed. In total, 37 pediatric patients from a single tertiary center underwent cochlear implantation without bone bed drilling and with screw fixation of the receiver/stimulator.

Results: The patients were on average 36.2 ± 20.5 months at implantation (range 8-96 months). At the time of the CT scan, the average duration of implantation was 25.3 ± 17.9 months (range 6-91 months). The average depth of the bone bed that formed spontaneously since implantation was 1.83 ± 0.39 mm (range 0.39-3.04 mm). Linear regression identified that the depth of the bone bed increased significantly with duration of implantation (β = 0.389, p = 0.009), but age at implantation was not associated with bone bed depth.

Conclusions: A spontaneously formed temporal bone bed was observed in pediatric CI patients already six months after implantation. A deeper bone bed was measured in children who have had their CI for a longer period. A spontaneously formed bone bed is likely to combine the benefits of a surgically drilled bone bed, whilst limiting the duration of the surgery and thereby associated costs.
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http://dx.doi.org/10.1016/j.ijporl.2021.110897DOI Listing
August 2021

[Anatomical and functional results of ossiculoplasty with adjustable length titanium prostheses with and without hydroxyapatite].

Vestn Otorinolaringol 2021 ;86(3):14-19

National Medical Research Center of Otorhinolaryngology, Moscow, Russia.

Objective: To compare the anatomical and functional results of the ossicular chain reconstruction with classic titanium adjustable prostheses and titanium adjustable prostheses with hydroxyapatite cap.

Material And Methods: The 300 patients (360 cases) with chronic suppurative otitis media were examined and operated. The patients are divided into 2 groups. Group A included patients who received an ossicular prosthesis with a hydroxyapatite cap (90 cases with a partial prosthesis and 90 with a full one). Group B included patients who received prostheses without hydroxyapatitis (90 cases with a partial prosthesis and 90 with a complete one). The patients who received a prosthesis with a hydroxyapatite cap were divided into two subgroups, depending on the autotissue, which was placed between the prosthesis cap and the nontympanic membrane: this is an autocartilage plate or perichondrium/fascial graft. The follow-up period after surgery was 38.5±14.4 months (from 12 to 48 months). In the long-term postoperative period, the subjects were assessed the values of the bone-air gap (BAG), the consistency of the nontympanic membrane, and the presence of signs of extrusion of the prosthesis cap. Comparison of anatomical and functional results between patients with full and partial ossicular prostheses was performed separately.

Results: A good result in the form of a 20 dB or more dB BAG reduction was achieved in 82.2% of patients who received a partial prosthesis (85 patients in group A and 63 in group B), and in 57.8% of patients who received a complete prosthesis (45 patients in group A and 59 in group B). The BAG values in the long-term period after surgery did not statistically significantly differ between patients who received a prosthesis with a hydroxyapatite cap or a fully titanium one (=0.939 for patients with full prostheses and =0.745 for patients with partial prostheses). The placement of cartilage or perichondrium/fascial graft between the hydroxyapatite prosthesis cap and the nontympanic membrane also did not affect the functional outcome (with full prostheses - =0.651, with partial prostheses - =0.142).

Conclusion: It is possible to use ossicular prostheses with a hydroxyapatite cap without placing an autocartilaginous plate between the nontympanic membrane and the cap of the prosthesis. In the long term period, functional and anatomical results with hydroxyapatite cap prostheses do not differ statistically significantly from those with all-titanium prostheses.
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http://dx.doi.org/10.17116/otorino20218603114DOI Listing
July 2021

[The interdisciplinary approach to the rehabilitation of the patients presenting with congenital atresia of the external auditory canal and the concomitant microtia].

Vestn Otorinolaringol 2018;83(2):17-21

Research and Clinical Centre of Otorhinolaryngology, Russian Federal Medico-Biological Agency, Moscow, Russia, 123182.

The objective of the present study was to develop and introduce into the clinical practice the method for the combined aesthetic and functional rehabilitation of the patients presenting with congenital atresia of the external auditory canal (CAEAC) and the concomitant microtia. A total of 8 patients at the age from 6 to 21 years with unilateral CAEAC and microtia were given the surgical treatment. During the intervention, atresia was resolved using the trans-mastoid approach, tympanoplasty of autofasciae and ossiculoplasty making use of the partial titanium prosthesis and the placement of cranial osteointegratable titanium implants. At the second stage of the surgical intervention the 3D silicone prosthesis of the auricle shaped on an individual basis were used. The long-term follow-up observations have demonstrated the stable formation of the tube of the external auditory canal, with the bone-air interval amounting to 15-20 dB. The auricular prosthesis was the mirror image of the natural ear and completely concealed the congenital defect.
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http://dx.doi.org/10.17116/otorino201883217-21DOI Listing
September 2018

[The results of bilateral cochlear implantation in the children who survived meningitis].

Vestn Otorinolaringol 2017;82(6):39-43

Research and Clinical Centre of Otorhinolaryngology, Russian Federal Medico-Biological Agency, Moscow, Russia, 123182.

The objective of the present study was the prospective analysis of the results of bilateral cochlear implantation (CI) in the children presenting with bilateral ossification of the cochlea after they had survived meningitis. A total of 15 patients underwent the surgical intervention. In those exhibiting bilateral ossification of the basal cochlear helix over the 5 mm segment (up to first bend of the cochlear turn) and partial ossification of the second helix (in 6 children), the affected portions were removed with the placement of two choleostomies, the lower one (from the ossified membrane of the cochlear window) and the upper one (toward the second helix). Activation of the speech processors of the CI systems was carried out within 4-6 weeks after surgery. The hearing abilities of the children were evaluated in accordance with the 'Estimation of the auditory perception categories', 'Estimation of the child's apprehension capacity', and 'Analysis of speech intelligibility rating' guidelines. In all the children with ossification over less than 5 mm of the basal cochlear helix, it proved possible to introduce the whole intracochlear electrode grid whereas only half of the electrode array was implanted in the cases of overall ossification of the basal helix. The first results obtained by telemetry and surdopedagogical testing gave evidence of the possibility of identifying various sources of non-verbal and speech stimuli in all the treated children at a small (up to 3 meters) distance.
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http://dx.doi.org/10.17116/otorino201782639-43DOI Listing
March 2018
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