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1
Content available Assessment and management of retraction pockets
100%
Alper C. M. , Olszewska E.
Otolaryngologia Polska
|
2017
|
tom 71(1)
1-21
EN
This manuscript intends to review types, pathogenesis, associated risk factors, and potential methods of prevention and treatment of the retraction pockets in adults and children. The importance of retraction pockets (RP) lies in loss of original histological and anatomical structure which is associated with development of ossicular chain erosion, cho¬lesteatoma formation and potentially life threatening complications of cholesteatoma. The trans-mucosal exchange each gas in the middle ear (ME) is towards equalizing its partial pressures with the partial pressure in the environ¬ment. MEs that have abnormalities in the volume and ventilation pathways in the epitympanic may be more suscep¬tible to retraction pockets. Sustained pressure differences and/or inflammation leads to destruction of collagen fibers in the lamina propria. Inflammatory mediators and cytokines lead to release of collagenases result in viscoelastic properties of the lamina propria. The process of changes in the tympanic membrane structure may evolve to the cho¬lesteatoma formation. There are many different staging systems that clinicians prioritize in their decision making in the management of RP. The authors discuss the management possibilities in different clinical situations: RP without and with ongoing or intermittent evidence of Eustachian Tube Dysfunction (ETD), presence of adenoid hypertrophy or re-growth of adenoids, presence or absence of effusion, invisible depth of RP without effusion. invisible depth of RP with effusion, ongoing RP after VT insertion, and finally suspicion of cholesteatoma in a deep RP with ME effusion. A decision algorithm regarding the management of TM retraction and retraction pockets is provided.
2
Content available Glomus tympanicum – clinical characteristics and surgical management
100%
Łukawska-Popieluch I. , Bartoszewicz R. , Morawski K. , Niemczyk K.
Polski Przegląd Otorynolaryngologiczny
|
2018
|
tom 7(1)
8-15
EN
Objective: The aim was to determine the clinical characteristics and analysis of surgical treatment of patients with glomus tympanicum hospitalized in the Department of Otorhinolaryngology. Material and methods: Between 2000 and 2015, 27 patients were hospitalized. Age ranged 28-79 years old. The study analyzed data from the clinical examination and the type of surgical technique. Results: The most common symptoms were tinnitus and hearing loss. Resection of the tumor was performed by anterior tympanotomy in 3 (11,1 %), CWU mastoidectomy in 21 (77,8 %), CWD mastoidectomy in 1 (3,7 %), lateral petrosectomy in 2 (7,4 %) patients. Conclusion: Glomus tympanicum have a quite characteristic clinical picture with dominant symptoms of tinnitus, hearing loss and reddening of the tympanic membrane in otoscopic examination. This type of tumors require surgical treatment. Surgical access depends on the size of the tumor in the tympanic cavity. Most of these tumors can be removed using antromastoidectomy, with posterior tympanotomy and hypotympanotomy.
3
Content available Assessment and management of retraction pockets
100%
Alper C. M. , Olszewska E.
Polish Journal of Otolaryngology
|
2017
|
tom 71
|
nr 1
1-21
EN
This manuscript intends to review types, pathogenesis, associated risk factors, and potential methods of prevention and treatment of the retraction pockets in adults and children. The importance of retraction pockets (RP) lies in loss of original histological and anatomical structure which is associated with development of ossicular chain erosion, cholesteatoma formation and potentially life threatening complications of cholesteatoma. The trans-mucosal exchange each gas in the middle ear (ME) is towards equalizing its partial pressures with the partial pressure in the environment. MEs that have abnormalities in the volume and ventilation pathways in the epitympanic may be more susceptible to retraction pockets. Sustained pressure differences and/or inflammation leads to destruction of collagen fibers in the lamina propria. Inflammatory mediators and cytokines lead to release of collagenases result in viscoelastic properties of the lamina propria. The process of changes in the tympanic membrane structure may evolve to the cholesteatoma formation. There are many different staging systems that clinicians prioritize in their decision making in the management of RP. The authors discuss the management possibilities in different clinical situations: RP without and with ongoing or intermittent evidence of Eustachian Tube Dysfunction (ETD), presence of adenoid hypertrophy or re-growth of adenoids, presence or absence of effusion, invisible depth of RP without effusion. invisible depth of RP with effusion, ongoing RP after VT insertion, and finally suspicion of cholesteatoma in a deep RP with ME effusion. A decision algorithm regarding the management of TM retraction and retraction pockets is provided.
4
Content available remote Middle Ear Reconstructions : A Mechanical View
100%
Eiber A. , Freitag H. G.
Machine Dynamics Problems
|
2000
|
tom Vol. 24, No. 1
63-77
EN
For the development of optimal passive and active middle ear implants a precise mathematical description of hearing process is necessary. Mechanical models are suitable for a proper description of the sound transfer through the middle ear. They offer a clear insight into the complex dynamical behavior and allow a physical interpretation of the phenomena. The procedures and the powerful tools developed for machine dynamics can be successfully applied to the problems in hearing. In a first step the problems are analyzed from the mechanical point of view. Based on three-dimensional mechanical models the normal and impaired hearing is described. Depending on the particular investigation different models have to be generated to give a precise answer. Two realizations of active hearing aids are considered as examples. It is shown, how the frequency-dependent transfer functions are influenced by changing the driving principle and some desing parameters like additional mass attached to the ossicles, position and orientation of the actuator and coupling conditions.
5
Content available Congenital cholesteatomas
88%
Narożny W. , Kuczkowski J. , Stankiewicz C.
Polski Przegląd Otorynolaryngologiczny
|
2015
|
tom 4(2)
78-83
EN
Congenital cholesteatoma is a rare ear disorder. The most common presentation is a pearly and white mass, visible with an intact tympanic membrane in individuals with no previous history of ear discharge, ear surgery or perforation of tympanic membrane. Based on a careful overview of literature, authors of this article present: the most probable theories of the cause of development of congenital cholesteatoma, diagnostic criteria of congenital cholesteatoma, its most common clinical symptoms, preoperative studies, methods of surgical treatments and goals of postoperative proceedings. Furthermore, authors present a comparison of histological, molecular and clinical features of congenital and acquired cholesteatomas.
6
Content available Drainage or paracentesis
75%
Zielnik-Jurkiewicz B.
Polski Przegląd Otorynolaryngologiczny
|
2017
|
tom 6(2)
1-7
EN
Tympanostomy tube insertion and tympanic membrane incision are two the most frequently performed surgical procedures in otolaryngology, especially in children. The tympanic membrane incision - paracentesis, or myringotomy – is an incision of the tympanic membrane for diagnostic purposes or to allow drainage of pathological secretion from the tympanic cavity. Tympanostomy tube insertion involves incision made in the tympanic membrane and insertion of a ventilation tube (various types and for various periods of time) to improve hearing and aeration of the tympanic cavity. Procedures are performed through the ear canal (transcanal approach), under local or general anesthesia. Complications may occur in some cases of paracentesis and tympanostomy tube insertion.
7
Content available The impact of regular diving on the condition of the middle ear
75%
Stieler O. , Loba W. , Gawęcki W. , Urbaniak-Olejnik M. , Majewska A. , Warchoł W. , Hojan-Jezierska D.
International Journal of Occupational Medicine and Environmental Health
|
2021
|
tom 34
|
nr 6
779-788
EN
ObjectivesIt is generally held that exposure to both high-pressure and long-lasting contact with water makes diving a potentially hazardous sports activity as far as the ears are concerned. There is a number of research investigating the condition of the middle ear in a short period following diving; however, the knowledge regarding the long-term effects of regularly repeated diving remains limited.Material and methodsThe aim of this study is to evaluate the function of the middle ear after a diving season in a group of 31 adults diving regularly (1–17 years) by means of the following methods: 1) interview, 2) otoscopy, 3) pure tone audiometry, 4) classic tympanometry, and 5) wideband tympanometry.ResultsPeriodic problems with pressure equalization in the middle ear were observed in 12 individuals (38.7%). In all the analyzed cases, the authors found a normal condition of the external auditory canal and the tympanic membrane in otoscopy, normal hearing in pure tone audiometry, curve type A, and normal gradient in both classic and wideband tympanometry. Conclusions: Safe diving (according to safety precautions) does not have any long-term negative effects on the condition of the middle ear. However, these observations should be verified in a larger group of divers.
8
Content available remote Reconstruction of the 3D geometry of the ossicular chain based on micro-CT imaging
75%
Kwacz M. , Wysocki J. , Krakowian P.
Biocybernetics and Biomedical Engineering
|
2012
|
tom Vol. 32, no. 1
27-40
EN
Modelling of the sound transmission process from the external ear canal through the middle ear structures to the cochlea is often performed using the finite element method. This requires knowledge of the geometry of the object being modelled. The paper shows the results of reconstruction of the 3D geometry of the ossicular chain. The micro-CT images of a cadaver's temporal bone were used to carry out the reconstruction process. The obtained geometry may be used not only for modelling of the middle ear mechanics before and after ossicular replacement but also for production of anatomical middle ear prostheses, calculation of inertial properties of the ossicular bones or educating radiologist and otolaryngologist.
9
Content available remote Przegląd materiałów stosowanych w protetyce ucha środkowego
75%
Ziąbka M.
Materiały Ceramiczne
|
2018
|
tom T. 70, nr 1
65--85
PL
Konieczność zastąpienia lub rekonstrukcji chorych kosteczek słuchowych doprowadziła do rozwoju technik chirurgicznych umożliwiających implantowanie innowacyjnych protez. Nowe możliwości konstrukcyjno-materiałowe pozwoliły na projektowanie i otrzymywanie protez nie tylko w różnych rozmiarach i kształtach, ale także zróżnicowanych pod względem zastosowanych materiałów. W dzisiejszych czasach powszechnie wiadomo, że odpowiednio zaprojektowany materiał może wywoływać różną odpowiedź pooperacyjną. Modyfikacja składu chemicznego stwarza możliwości zmiany parametrów mechanicznych i funkcji protez. W przypadku znacznego uszkodzenia naturalnego połączenia łańcucha kosteczek słuchowych wskazana jest implantacja protez wykonanych z materiałów alloplastycznych, np. metali, ceramiki, tworzyw sztucznych lub kompozytów. Jednakże wszystkie materiały przeznaczone dla protetyki ucha środkowego powinny spełniać szereg wymagań. W niniejszym artykule opisano materiały stosowane w chirurgii ucha środkowego.
EN
The need to replace or reconstruct ossicles has led to the development of surgical techniques enabling innovative prosthesis implantation. New structural and material possibilities have influenced the design and preparation of prostheses, making it vary in size, shape and the applied material. Nowadays, it is common knowledge that a properly designed material may cause a different, more advantageous postoperative answer. Modifying the chemical composition makes changes to the parameters and functions of mechanical prostheses. In the case of enormous damage to the natural ossicular chain, it is advisable to administer the prostheses made of alloplastic materials, e.g. metal, ceramics, artificial plastics or composites. However, all the materials applied as implants must meet strict requirements. This review describes materials used in middle ear surgery.
10
Proliferation activity and apoptosis in granulation tissue and cholesteatoma in middle ear reoperations
63%
Durko M. , Kaczmarczyk D.
Folia Morphologica
|
2004
|
tom 63
|
nr 1
EN
The aim of the study was to find out the potential prognostic value of proliferation activity and apoptosis in cholesteatoma and granulation tissue removed during middle ear reoperation in recurrent middle ear inflammation. Granulation tissues and recurrent cholesteatoma were analysed after being surgically removed from the middle ear in a group of 25 patients qualified for middle ear reoperation procedure. Paraffin sections were stained with haematoxylin and eosin according to Mallory’s method. Immunohistochemical reaction Anti-PCNA was performed. Apoptosis was evaluated using the TUNEL method. The percentage of PCNA-positive cells was 42–95% in the matrix of the cholesteatoma and 29–81% in the perimatrix. In the granulation tissue it was 35–75%. The percentage of apoptotic cells was 12–73% in the matrix of the cholesteatoma, 5–72% in the perimatrix and 1–65 % in the granulation tissue. The prognostic value of the parameters studied in the recurrent middle ear inflammatory process is questionable, probably due to the small number of cases under examination.
11
Anatomical conditions of strengthening of the acoustic wave in the middle ear in selected species of mammals
51%
Charuta A. , Wysocki J. , Wieczorek U.
Electronic Journal of Polish Agricultural Universities. Series Biology
|
2011
|
tom 14
|
nr 2
12
Content available Kinematyka słyszenia - ucho środkowe
51%
Marszalik D. , Iwaniec M.
Aktualne Problemy Biomechaniki
|
2010
|
tom z. 4
137--142
PL
Artykuł ten jest poświęcony analizie kinematycznej błony bębenkowej oraz mechanizmu kosteczek słuchowych, który jest odpowiedzialny za przenoszenie drgań z ucha zewnętrznego do ucha wewnętrznego. Błonę bębenkową przedstawiono jako układ ciągły, a do analizy jej drgań wykorzystano metodę elementów skończonych. Układ kosteczek słuchowych przedstawiono jako dyskretny model trój członowego mechanizmu płaskiego. Wyznaczono prędkości oraz przyspieszenia istotnych punktów mechanizmu. Zbadano wpływ długości kosteczek słuchowych na działanie mechanizmu.
EN
This article describes kinematic analysis of tympanic membrane and the ossicles mechanism, which is responsible for transferring vibrations from outer ear to inner ear. The tympanic membrane was presented as a continuous system and analyzed by means of FE method. The ossciles were described by discrete three elements planar model. Velocities and accelerations of key points of the mechanism were calculated. Furthermore, the influence of ossicles length on functioning of the mechanism was tested.
13
Gdy masz powyżej uszu chorób uszu, czyli jak poprawić możliwości diagnostyki otologicznej
44%
Dowdy S. M.
Weterynaria po Dyplomie
|
2020
|
tom 21
|
nr 6
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