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Wyszukujesz frazę "otosclerosis" wg kryterium: Temat


Wyświetlanie 1-9 z 9
Tytuł:
Conductive hearing loss after surgical treatment of otosclerosis – long-term observations
Autorzy:
Wierzbicka, Małgorzata
Gawęcki, Wojciech
Bartochowska, Anna
Balcerowiak, Andrzej
Pietraszek, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1397253.pdf
Data publikacji:
2021
Wydawca:
Index Copernicus International
Tematy:
conductive hearing loss
otosclerosis
reoperation
restapedotomy
stapedectomy
stapedotomy
Opis:
Introduction: For many years, surgical treatment of otosclerosis has been a widely accepted approach. Hearing improvement following stapes surgery is sometimes spectacular, and good treatment results are obtained in many centers in over 90% of patients. However, in the subsequent years after the treatment, some patients develop permanent or progressive conductive hearing loss. Aim: The aim of the study is to present a group of patients with conductive hearing loss after the first otosclerosis surgery and to analyze the causes of its occurrence. Materials and Methods: The retrospective review covered patients who underwent the initial surgery in the years 2000–2009. We analyzed the patients’ medical records from before the end of 2019, which provided results of at least 10 years of postoperative follow-up. The group consisted of 1118 patients aged 14–82, including 802 women and 316 men. Results: Reoperations due to conductive hearing loss were performed on 93 patients, who accounted for 8.3% of the originally operated patients. They were much more common in patients after stapedectomies (19.7%) than in patients after stapedotomy (5.5%). Prosthesis dislocation was found to be the most frequent intraoperative observation (44.1%) and was often associated with erosion or necrosis of the long process of incus (28%). Less frequent reasons for hearing loss were: adhesions around the prosthesis (10.8%), too small hole in the stapes footplate (8.6%), too short prosthesis (8.6%), progression of otosclerosis (7.5%), too long prosthesis (6.4%), presence of a granuloma around the prosthesis (5.4 %), and displacement of incus (4.3%). Conclusions: Surgical treatment of otosclerosis is a widely accepted and good method. It allows to achieve an improvement in hearing in the vast majority of patients treated in this way. Unfortunately, over the years some patients develop recurrent conductive hearing loss. Reoperation creates an opportunity for finding the cause and improving hearing in the majority of cases.
Źródło:
Polish Journal of Otolaryngology; 2021, 75, 1; 1-6
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of surgery in otosclerosis on the non-operated ear
Autorzy:
Wiatr, Agnieszka
Job, Katarzyna
Składzień, Jacek
Wiatr, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/1397275.pdf
Data publikacji:
2021
Wydawca:
Index Copernicus International
Tematy:
otosclerosis
Carhart's notch
stapedotomy
non-operated ear
Opis:
Backgrounds Otosclerosis is an underlying disease of the bony labyrinth. The hearing loss is most often of conductive nature, in some cases the involvement of the bony part of the cochlea results in mixed hearing loss. Aims: The aim of the analysis was to answer the question whether a surgery on one of the ears affects the state of the other ear in the course of otosclerosis. Methods The analysis included 140 patients hospitalized and operated on between 2010 - 2016. Only patients who had not had a surgical operation within the middle ear due to otosclerosis prior to the study were included in it. An audiological assessment was performed with the use of pure tone threshold audiometry taking into account. Results In the group of patients with no Carhart's notch, the mean threshold of bone conduction was statistically lower than before the procedure for the frequencies of 500, 1000 Hz and statistically equal for the frequency of 2000 Hz. The same analysis in the group of patients with Carhart's notch present in the pre-surgical tonal audiogram of the non-operated ear showed a statistically significant lower value of the post-surgical threshold bone conduction value. Conclusion It was confirmed the possibility of improving the hearing of the non-operated ear after the stapedotomy of the opposite ear, in the author's own studies by an average of 5 dB in the low-frequency range.
Źródło:
Polish Journal of Otolaryngology; 2021, 75, 2; 15-20
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short-term audiological outcomes of stapedotomy: microdrill at low revolutions versus manual perforator to perform a small footplate fenestra. A prospective observational study
Autorzy:
Palacios-Garcia, Jose
Ropero-Romero, Francisco
Aguilar-Vera, Francisco
Sanchez-Gomez, Serafin
Powiązania:
https://bibliotekanauki.pl/articles/1397252.pdf
Data publikacji:
2021
Wydawca:
Index Copernicus International
Tematy:
audiology
hearing loss
otosclerosis
stapedectomies
stapes surgery
Opis:
Introduction: Stapedotomy is currently the surgical technique of choice for treating otosclerosis. Despite this, there is no agreement about the best technique to perform a small fenestra footplate, therefore multiple procedures have been proposed. The aim of this study was to investigate the hearing outcomes of microdrill and manual perforator. Material and Methods: An observational prospective study was carried out on patients who underwent stapedotomy. We analyzed the hearing threshold in two groups of patients according to the way the fenestra footplate was realized by microdrill or manual perforator. Results: A total of 113 patients were evaluated. Postoperative hearing gain of the microdrill group was 23.29 (18.58) dB HL 95% CI (18.40–28.18), while in the manual perforator group, it was 22.67 (12.91) dB HL 95% CI (19.07–26.26). Both groups were statistically significant. Postoperative bone conductive hearing threshold at the frequencies of 0.5, 1 and 2 KHz and postoperative air conductive hearing threshold at the frequencies of 2 and 4 KHz showed statistically significant differences in the manual perforator group. The closure of air-bone gap was higher in the microdrill group with statistically significant differences. Conclusion: Both manual perforator and microdrill have good hearing outcomes at six months after surgery. The manual perforator has better audiological outcomes than microdrill. Hence, the manual perforator is a safe technique and can be used in centers that do not have other methods to make the small fenestra.
Źródło:
Polish Journal of Otolaryngology; 2021, 75, 1; 45-50
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of middle ear disorder in round-window stimulation using a finite element human ear model
Autorzy:
Zhou, Kai
Liu, Houguang
Yang, Jianhua
Zhao, Yu
Rao, Zhushi
Yang, Shanguo
Powiązania:
https://bibliotekanauki.pl/articles/307472.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
implant
symulacja
FEM
middle ear implant
round-window stimulation otosclerosis
otitis media
hearing loss
finite-element analysis
Opis:
The aim of this work was to study the effect of middle ear disorder on round window (RW) stimulation, so as to provide references for the optimal design of RW stimulation type middle ear implants (MEIs). Methods: A human ear finite-element model was built by reverse engineering technique based on micro-computed tomography scanning images of human temporal bone, and was validated by three sets of comparisons with experimental data. Then, based on this model, typical disorders in otosclerosis and otitis media were simulated. Finally, their influences on the RW stimulation were analyzed by comparison of the displacements of the basilar membrane. Results: For the otosclerosis, the stapedial abnormal bone growth severely deteriorated the equivalent sound pressure of the RW stimulation at higher frequencies, while the hardening of ligaments and tendons prominently decreased the RW stimulation at lower frequencies. Besides, among the hardening of the studied tissues, the influence of the stapedial annular ligament’s hardening was much more significant. For the otitis media, the round window membrane (RWM)’s thickening mainly decreased the RW stimulation’s performance at lower frequencies. When the elastic modulus’ reduction of the RWM was considered at the same time especially for the acute otitis media, it would raise the lower-frequency performance of the RW stimulation. Conclusions: The influence of the middle ear disorder on the RW stimulation is considerable and variable, it should be considered during the design of the RW stimulation type MEIs.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 1; 3-12
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short-term hearing results in adults after a stapedotomy
Autorzy:
Eghbalnejad Mofrad, Amir Mohammad
Powiązania:
https://bibliotekanauki.pl/articles/552234.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
Tematy:
hearing loss
otosclerosis
audiometry
stapedotomy.
Opis:
Background. A stapedectomy or stapedotomy is known as the best treatment option for patients with otosclerosis. Otosclerosis is a primary disease of the bony labyrinth capsule, which is characterized by one or more localized foci, where bone deposition occurs repeatedly. The best and most effective treatment option is a stapedectomy or stapedotomy. Objectives. The present study evaluated the short-term hearing results in patients with otosclerosis after primary stapes surgery. Material and methods. In this retrospective study, the short-term hearing results of all patients with otosclerosis after a primary stapedotomy admitted to the Ahvaz Emam hospital from 2007 to 2017 was evaluated. Improvement in hearing was evaluated according to the pre- and post-audiometry results. Air Conduction (AC), Bone Conduction (BC) and Air-Bone Gap (ABG) thresholds were recorded at 500, 1 000, 2 000 and 4 000 Hz. SPSS software (Version 22.0) was used for statistical analysis. Results. Of the 413 cases, 231 (55.93%) and 182 (44.07%) were females and males, respectively. The mean age of patients was 39.06 ± 11.29 years. The disease in 131 (31.72%) was bilateral. The mean ABG in 341 patients (82.63%) ≤ 10 dB and in 52 patients (12.47%) was 10–20 dB. Conclusions. The results of the study showed that a primary stapedotomy is a successful and effective way to improve short-term hearing results in adults with otosclerosis.
Źródło:
Family Medicine & Primary Care Review; 2019, 2; 144-148
1734-3402
Pojawia się w:
Family Medicine & Primary Care Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surgical treatment in children with otosclerosis and congenital stapes fixation: our experience and outcome
Autorzy:
Sobolewska, Aleksandra
Clarós, Pedro
Powiązania:
https://bibliotekanauki.pl/articles/1397795.pdf
Data publikacji:
2019
Wydawca:
Index Copernicus International
Tematy:
stapedotomy
stapes surgery
congenital stapes fixation
congenital stapes ankylosis
juvenile otosclerosis
children
pediatric stapes surgery
Opis:
Aim: To evaluate outcomes of stapes surgery in children with congenital stapes fixation and juvenile otosclerosis. Methods: A retrospective chart review was performed from 1987 to 2013 to identify patients under 18 years old who underwent a stapes surgery. Patients' age, gender, pre- and postoperative audiograms, intraoperative findings including aetiology of stapes fixation, prosthesis type, and complications were analysed. Results: 18 children (6 - 17 years old), all with bilateral conductive hearing loss were identified and 34 stapes surgeries were performed (two patients underwent surgery only on one side). The cause of fixation included juvenile otosclerosis in 88% and congenital stapes fixation in 12%. The mean pre-operative air-bone gap (ABG) was 36,24 dB (SD: 10,86) compared to a postoperative mean ABG of 7,74 (SD: 3,3) (p < 0.000). The profound sensorineural hearing loss was not observed in long-term follow-up. Conclusions: Paediatric stapes surgery has comparable results to stapedectomy in adults regardless of the cause of stapes fixation; however, the better hearing outcome was observed for cases of juvenile otosclerosis rather than congenital stapes fixation.
Źródło:
Polish Journal of Otolaryngology; 2019, 73, 2; 23-28
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The surgical treatment results of otosclerosis at the Department of Otolaryngology Silesian Medical University in Zabrze in years 2000–2010
Autorzy:
Czerwińska, Gabriela
Ścierski, Wojciech
Namysłowski, Grzegorz
Lisowska, Grażyna
Misiołek, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/1398313.pdf
Data publikacji:
2017
Wydawca:
Index Copernicus International
Tematy:
otosclerosis
stapedotomy
surgical treatment results
Opis:
Background: Otosclerosis is a cause of 5–9% of all hearing loss. The most effective treatment of otoslerosis is stapedotomy. Aim: The aim of this study was to evaluate the results of otosclerosis surgical treatment and to examine the impact of disease stage, time of the signs, age and sex on the results. Material and methods: 105 patients who underwent operation due to otosclerosis at the Department of Otolaryngology University Hospital in Zabrze at the age of 18–65 were analyzed. In 25 patients stapedotomy was bilateral. 130 cases of treated ears were included in the statistical analysis. The state of hearing after operation was evaluated with regard to guidance of Hearing and Balance Committee of American Academy of Otolaryngology – Head and Neck Surgery and with consideration of suggestions made by European Academy of Otolaryngology and Neurootology. Mean values of bone and air conduction, air bone gap before, one year after treatment, and at least 4 years after surgery were compared. The influence of stage of the disease in terms of Shambaugh index, lasting of signs, age and sex were evaluated with regard to change of mean hearing loss according to Bell Telephone Laboratories. Results: On the basis of hearing examination evaluating improvement in air and bone conduction and reduction of cochlear reserve, very good and good treatment results were obtained in over 90% of patients in short and long term observations. No influence of disease stage, time of signs lasting, age and sex on the results of treatment – with regard to change in mean hearing loss was shown.
Źródło:
Polish Journal of Otolaryngology; 2017, 71, 2; 17-21
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wideband tympanometry – a new method to evaluate the middle ear
Autorzy:
Niemczyk, Elżbieta
Lachowska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1401761.pdf
Data publikacji:
2016
Wydawca:
Index Copernicus International
Tematy:
Wideband tympanometry
impedance audiometry
hearing loss
otosclerosis
otitis media with effusion
tympanic membrane perforation
Opis:
Wideband tympanometry (WBT) is a relatively new assessment method of the middle ear. Using wideband click WBT provides measurements at frequencies from 226–8000 Hz with more diagnostic information without any additional effort. The traditional impedance audiometry offers information acquired only at a single frequency (mostly 226 Hz or 1000 Hz). WBT provides both traditional tympanograms and tympanograms at multiple frequencies as well as new information that is retrieved from resonance frequency, absorbance graph, and averaged wideband tympanogram. WBT seems to be more specific and sensitive method to evaluate a conductive hearing loss than traditional impedance audiometry, and might be helpful in diagnosing such pathologies as: middle ear effusion, negative middle ear pressure, otosclerosis, ossicular discontinuity, tympanic membrane perforation, upper semicircular canal dehiscence. WBT seems to be a very promising additional diagnostic tool used for hearing screening in newborns and diagnosing minor middle ear pathologies that disturb otoacoustic emissions. WBT is considered to be a better predictor for middle ear problems in newborns and infants than 1000 Hz tympanometry. The wideband absorbance measurements can be performed at ambient as well as peak pressure. Ambient pressure absorbance measurements do not require any pressure changes in the external auditory canal, thus it seems to be a perfect method for post-surgical monitoring of middle ear condition. However, WBT has its limitations, it presents large inter-subject variability in both absorbance graphs and resonance frequency values, and therefore WTB should be more extensively studied. WBT see
Źródło:
Polski Przegląd Otorynolaryngologiczny; 2016, 5, 1; 65-74
2084-5308
2300-7338
Pojawia się w:
Polski Przegląd Otorynolaryngologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study of Hough technique in surgery of otosclerosis, using the finite element method
Autorzy:
Gentil, F.
Parente, M.
Martins, P.
Santos, C.
Almeida, E.
Ferreira, A.
Natali, R.
Powiązania:
https://bibliotekanauki.pl/articles/307201.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
metoda elementów skończonych
otoskleroza
wycięcie strzemiączka
strzemiączko
finite element method
otosclerosis
stapedectomy
stapedotomy
stapes
Opis:
Purpose: Otosclerosis is a metabolic bone disease of the otic capsule that can cause the stapes fixation, resulting in conductive hearing loss or, in a profound sensorineural deafness threshold. Surgery is one of the possible treatments for the otosclerosis. To repair small focus of otosclerosis in the anterior crus of the stapes, in 1960, Hough suggested the implementation of a technique in which part of the anterior crus is fractured and the stapes turned. As a result, the posterior crus of the stapes is the only connection with the inner ear. In this work, the outcome of Hough’s surgical technique was simulated. Methods: Based on computerized images, a finite element model of middle ear ossicles and tympanic membrane was created, as well as a model where the stapes has changed. The discretization of the tridimensional solid model was made using the ABAQUS software. The mechanical properties used were taken from the literature and adequate boundary conditions were applied. Results: The results obtained with the Hough technique simulation were compared with a representative model of the normal ear, taking into account the displacements obtained on the central part of the stapes footplate and the maximum principal stress in the stapes crus. Conclusions: The results obtained are closer to the normal ear model, therefore Hough technique stands out as a good option to correct small focus of otosclerosis.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 4; 149-153
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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