617 results on '"Grommet"'
Search Results
2. Middle ear disease requiring myringotomy in the first two years after tracheotomy in the pediatric population
- Author
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Kloosterman, Nicole, Donnell, Nathaniel, Somers, Evan, Chen, Heidi, Kirse, Daniel, and Whigham, Amy S.
- Published
- 2021
- Full Text
- View/download PDF
3. Multifrequency multicomponent tympanometry in children with a history of ventilation tube insertion
- Author
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Kaya, Sule, Keseroglu, Kemal, Tokgoz, Sibel Alicura, Barmak, Elife, Saylam, Güleser, and Korkmaz, Mehmet Hakan
- Published
- 2021
- Full Text
- View/download PDF
4. Predictors of postoperative complications in paediatric patients receiving grommets – A retrospective analysis
- Author
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Wang, Luke Chenkan, Giddings, Charles Edward, and Phyland, Debra
- Published
- 2021
- Full Text
- View/download PDF
5. Otitis media with effusion in children: Pathophysiology, diagnosis, and treatment. A review
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Vanneste, Pauline and Page, Cyril
- Published
- 2019
- Full Text
- View/download PDF
6. Comparison of four ventilation tubes commonly used in the pediatric population: A retrospective cohort study.
- Author
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Morrissette, Margareta, Ben‐Dov, Tom, Santacatterina, Michele, Catháin, Éadaoin Ó., and April, Max M.
- Subjects
- *
OTITIS media with effusion , *TYMPANIC membrane perforation , *ACUTE otitis media , *CHILD patients , *LOGISTIC regression analysis - Abstract
Objective: To assess differences in otorrhea, tympanic membrane perforation, and time to extrusion in children receiving one of four commonly used, short‐term ventilation tubes for the first time. Methods: Retrospective chart review of 2 years of postoperative follow‐up to analyze patient outcomes after insertion of either a Paparella type‐I Activent, Armstrong Beveled, Modified Armstrong, or Armstrong Microgel ventilation tube. Incidence of complications was determined by reviewing provider notes. Adjusted multivariate logistic regression models were used to determine odds ratios of complications among the four tube types. Results: A total of 387 patients were reviewed. The mean age was 2.4 years and 35.9% were female. Armstrong beveled tubes had the highest odds of otorrhea. Paparella type‐I tube had the shortest time to extrusion of about 9 months, while Armstrong Beveled had the longest, at almost 19 months. When evaluating episodes of otorrhea each child experienced on average, per month, Armstrong beveled tubes had the highest monthly rate of otorrhea and Paparella type‐I the least. No significant differences were found regarding tympanic membrane perforation. Conclusions: This retrospective chart review showed that no tube was clinically superior across all complications. The findings from this study may give otolaryngologists an opportunity to consider choosing a specific type of tube according to the clinical situation. The large variations in extrusion times should be considered in terms of patient age, seasonality, and desired duration of tube placement. Level of Evidence: 4. Differences in otorrhea, tube blockage, tympanic membrane perforation, and time to extrusion were evaluated among children receiving one of four commonly used short‐term ventilation tubes: Paparella type‐I Activent, Armstrong Beveled, Modified Armstrong, and Armstrong Microgel. The major difference between tubes was time to extrusion and none was clinically superior in terms of complications. The large differences in extrusion times should be considered in terms of patient age, seasonality and desired duration of tube placement, and may give otolaryngologists an opportunity to consider choosing a specific tube according to the clinical situation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. Follow-up audiometry after bilateral myringotomy and tympanostomy tube insertion
- Author
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Hu, Shirley, Patel, Neha A., and Shinhar, Shai
- Published
- 2015
- Full Text
- View/download PDF
8. The impact of ventilation tubes in otitis media on the risk of cholesteatoma on a national level
- Author
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Djurhuus, Bjarki Ditlev, Christensen, Kaare, Skytthe, Axel, and Faber, Christian Emil
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- 2015
- Full Text
- View/download PDF
9. Date estimation of fabrication and repair of Color garments encouragement banner.
- Author
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Pak, Seonghee, An, Boyeon, and Yun, Changsang
- Subjects
CLOTHING & dress ,LITERATURE reviews ,ENCOURAGEMENT ,BANNERS ,SULFUR compounds - Abstract
The Color Garments Encouragement Banner was designated a Korean Heritage in 2014 to recognize it as the most significant object of the color garments encouragement campaign. However, despite its significance, nothing is known about its manufacture. Therefore, this study attempted to analyze the materials of the banners to estimate when they were manufactured and repaired. The investigation of materials on the banner involved visual examination, literature review, microscopy, SEM–EDS, FT-IR, Py-GC–MS, ICP-MS, and LC–MS. The fabric, patch, and threads comprising the artifact were identified as cotton. FT-IR and Py-GC–MS confirmed that the repair patch was a woven blend of polyester and cotton yarns. EDS analysis indicated that the polyester was treated with titanium delustering. ICP-MS detected high concentrations of chromium that were not used in traditional dyeing techniques. The azo and sulfur compounds were identified by LC–MS analysis. The material layered on the grommet patch was thought to be a mixture of Pb, Ti with CaCO
3 and BaSO4 . Based on the overall results, the production date of the banner was narrowed down to the late 1920s, and the repair date to the mid-1950s. Although the materials used could not be identified owing to the limitations of the applicable analysis. Nonetheless, it is hoped that the analyses conducted in this study can serve as a scientific foundation for dating modern cultural heritage objects with limited handed-down record and historical documentation. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
10. Comparison of four ventilation tubes commonly used in the pediatric population: A retrospective cohort study
- Author
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Margareta Morrissette, Tom Ben‐Dov, Michele Santacatterina, Éadaoin Ó. Catháin, and Max M. April
- Subjects
acute otitis media ,grommet ,otitis media with effusion ,tympanostomy tube complications ,tympanostomy tube otorrhea ,tympanostomy tubes ,Otorhinolaryngology ,RF1-547 ,Surgery ,RD1-811 - Abstract
Abstract Objective To assess differences in otorrhea, tympanic membrane perforation, and time to extrusion in children receiving one of four commonly used, short‐term ventilation tubes for the first time. Methods Retrospective chart review of 2 years of postoperative follow‐up to analyze patient outcomes after insertion of either a Paparella type‐I Activent, Armstrong Beveled, Modified Armstrong, or Armstrong Microgel ventilation tube. Incidence of complications was determined by reviewing provider notes. Adjusted multivariate logistic regression models were used to determine odds ratios of complications among the four tube types. Results A total of 387 patients were reviewed. The mean age was 2.4 years and 35.9% were female. Armstrong beveled tubes had the highest odds of otorrhea. Paparella type‐I tube had the shortest time to extrusion of about 9 months, while Armstrong Beveled had the longest, at almost 19 months. When evaluating episodes of otorrhea each child experienced on average, per month, Armstrong beveled tubes had the highest monthly rate of otorrhea and Paparella type‐I the least. No significant differences were found regarding tympanic membrane perforation. Conclusions This retrospective chart review showed that no tube was clinically superior across all complications. The findings from this study may give otolaryngologists an opportunity to consider choosing a specific type of tube according to the clinical situation. The large variations in extrusion times should be considered in terms of patient age, seasonality, and desired duration of tube placement. Level of Evidence 4.
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- 2024
- Full Text
- View/download PDF
11. Increasing rate of middle ear ventilation tube insertion in children in denmark
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Djurhuus, Bjarki Ditlev, Skytthe, Axel, Christensen, Kaare, and Faber, Christian Emil
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- 2014
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12. The quality and accuracy of internet information on the subject of ear tubes
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McKearney, Thomas C. and McKearney, Richard M.
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- 2013
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13. Never trust secondary references: Examples from the early history of myringotomy and grommets
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Mudry, Albert
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- 2008
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14. Intra-Tympanic Dexamethasone Therapy via Grommet Insertion for Improved Auditory Outcome in Sudden Sensorineural Hearing Loss.
- Author
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Lele, Pushkar and Patel, Rushika
- Subjects
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SENSORINEURAL hearing loss , *DEXAMETHASONE , *TYMPANIC membrane - Abstract
Idiopathic sudden-sensorineural hearing loss (ISSHL) is an emergent otological condition needing prompt treatment for better recovery. In our study we aimed to determine the efficacy of intra-tympanic dexamethasone therapy after inserting a grommet in postero-inferior quadrant of the tympanic membrane for dexamethasone instillation. This is a prospective cohort study of 31 patients of ISSHL, in whom grommet was inserted and dexamethasone drops were instilled for 5 days. Several factors such as time of initiation of therapy, age of patient was considered, and inferences were drawn. Auditory outcomes were divided into low, mid and high frequency and the results were tabulated. Paired t tested was applied for all frequencies for both pre-test and post-test. P-value was (< 0.05) in all the three ranges of frequencies. Also, statistical significance was found between early treatment from onset of disease and auditory outcome. The earlier the therapy was initiated, better were the results. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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15. Assessment of Quality of Life After Ventilation Tube Insertion Using Otitis Media 6-Item (OM-6) Questionnaire.
- Author
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Saraf, Aditiya, Manhas, Monica, and Kalsotra, Parmod
- Subjects
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MIDDLE ear ventilation , *OTITIS media , *OTITIS media with effusion , *VENTILATION , *QUALITY of life , *TUBES - Abstract
Aims and Objectives: To assess the impact of Ventilation tube insertion on the quality of life of children with otitis media with effusion using OM-6 questionnaire. Materials and methods: The present prospective study was conducted in the Department of ENT, SMGS Hospital on 65 children suffering from Otitis Media with Effusion-OME (diagnosed by otoscopy and tympanometry after 3-month follow-up) over a period of 1 year from December 2020 to December 2021. Caregivers of all 65 children were subjected to Otitis Media 6-Item (OM-6) questionnaire at the time of admission (preoperative). All 65 children were subjected to ventilation tube insertion (Shephard Grommet) under general anaesthesia. Post-operatively at 6 weeks of ventilation tube insertion, caregivers were again asked to fill OM-6 questionnaire. Results: The mean pre-operative overall OM6 score was 4.59 ± 1.02 and mean postoperative overall OM6 score was 2.22 ± 0.83, the difference being statistically significant (p < 0.05). Out of the six domains of OM6 questionnaire, the highest mean preoperative-postoperative difference was seen in Caregiver Concern (2.76), followed by Physical suffering (2.55). The least mean preoperative-postoperative difference was seen in Speech impairment (0.88). Conclusion: According to our study, there is statistically significant improvement in quality of life in children with OME, after insertion of ventilation tube. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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16. Aseptic surgical technique and postgrommet otorrhoea
- Author
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Odutoye, Tunde, McGilligan, Anthony, and Robb, Peter J
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- 2003
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17. Laser myringotomy versus ventilation tubes in children with otitis media with effusion
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Koopman, J.P, Reuchlin, A.G, Kummer, E.E, Hoeve, L.J, and Blom, H.M
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- 2003
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18. Conservative management of otitis media in cleft palate
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Shaw, Richard, Richardson, David, and McMahon, Siobhan
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- 2003
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19. Análisis de coste-efectividad del tratamiento de la otitis media serosa infantil
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Plaza, G. and De los santos, G.
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- 2003
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20. Endoscopic Treatment of Otitis Media with Effusion.
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Kanotra, Sonika, Purbi, Shweta, Bashir, Seerat, and Sharma, Preeti
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OTITIS media with effusion , *ENDOSCOPIC surgery , *MINIMALLY invasive procedures , *MYRINGOTOMY - Abstract
Myringotomy with grommet insertion is considered the standard of care for patients with unresolved otitis media with effusion and is traditionally performed under the operating microscope. The introduction of endoscopic ear surgery has provided otologists a tool for minimally invasive ear surgery with a panoramic view. We have described the use of endoscope for myringotomy and grommet insertion. The technique was found to be safe and effective and has the added advantage of being an excellent tool for teaching. The advantages and disadvantages of this technique vis a vis the traditional otomicroscopic technique have been discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
21. Anmerkungen zum Terminus „Drainage".
- Author
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Böttcher, Arne and Meier-Vieracker, Simon
- Abstract
Copyright of HNO is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
22. Myringotomy and Transtympanic Ventilation Tube Positioning
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Villari, Domenico, James, Adrian, Bonali, Marco, Maccarrone, Francesco, Martone, Andrea, Presutti, Livio, Bonali, Marco, editor, Presutti, Livio, editor, and Marchioni, Daniele, editor
- Published
- 2021
- Full Text
- View/download PDF
23. Clinical Profile Of Secretory Otitis Media In Patients Visiting Ent Department Of Sir T. General Hospital, Bhavnagar.
- Author
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Mehta, Jasmin, Jha, Sushilkumar G., Goyal, Paridhi, Chaudhari, Monika, Meena, Manoj Kumar, and Chawda, Udit
- Subjects
- *
OTITIS media with effusion , *OTITIS media , *TYMPANIC membrane , *THERAPEUTICS , *MYRINGOTOMY , *SYMPTOMS - Abstract
Background: Secretory otitis media is chronic inflammation of middle ear cleft characterized by accumulation of nonpurulent fluid behind intact tympanic membrane. This study was done to identify various modes of presentation of secretory otitis media in different age groups and gender and to evaluate its outcome by various modalities of treatment. Material And Methods: This study comprised of 50 cases of bilateral or unilateral secretory otitis media of all the age groups. It is prospective observational study. Secretory otitis media is diagnosed by history, otoscopic examination and audiometric evaluation. Complete history and examination was done according to the proforma. All the patients were given conservative and medical treatment and followed up regularly. Cases refractory to medical treatment required surgical treatment based on clinical presentation and associated symptoms. It was carried out during the period of August 2021 to April 2022, in ENT department of Sir T. general hospital Bhavnagar. Result: In this study, maximum number (28%) of cases belonged to age group of 10-20 years, more commonly seen in males with Male: Female ratio of 1.78:1.Most of the cases (44%) were from lower socioeconomic class. Ear blockage or fullness of the ear (76%) was the most common clinical presentation. On otoscopy, fluid level with air bubbles was seen most commonly (84%). All the cases (100%) were put on medical treatment and regularly followed up. 50% responded well but the remaining 50% refractory cases required other surgical modalities of treatment based on clinical presentation and associated symptoms. Surgical treatment included adenoidectomy and adenotonsillectomy (20%), myringotomy with grommet insertion (4%). Myringotomy was done in 20% of cases. Septoplasty was done in 6% of the patients of secretory otitis media. Conclusion: Secretory otitis media was common in 10-20 years age group. More common in males with lower socioeconomic class. Most common clinical presentation was ear blockage or fullness of ear. On otoscopy, fluid level with air bubbles was the most common sign. Treatment consisted of medical and surgical modalities. All the cases obtained subjective relief and improvement in the symptoms. [ABSTRACT FROM AUTHOR]
- Published
- 2023
24. Metallic grommet in the Eustachian tube
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Ramadass, T., Venkatraman, Rochita, and Abdurahiman, Raees
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- 2015
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25. The Vigo grommet trainer
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Chiesa Estomba, C.M., Meléndez García, J.M., Hamdam Zavarce, M.I., and Betances Reinoso, F.A.
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- 2015
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26. 7 - Construction and installation lifting analysis
- Published
- 2015
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27. Meta‐analysis of time to extrusion of tympanostomy tubes by tympanic membrane quadrant.
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Ungar, Omer J., Baris, Harel, Oron, Yahav, Shilo, Shahaf, Handzel, Ophir, Warshavsky, Anton, Horowitz, Gilad, Abu Eta, Rani, Muhanna, Nidal, and Carmel Neiderman, Narin N.
- Subjects
- *
TYMPANIC membrane , *TUBES - Abstract
Objectives: To investigate the published time to extrusion of tympanostomy tubes inserted in the various quadrants of the tympanic membrane. Methods: Publications were selected by a search with 'PubMed', 'Embase' and 'Web of Science'. A meta‐analysis of time to extrusion as a function of tympanic membrane quadrant intubation was performed. Design, Setting, Participant‐Not relevant Main Outcome Measured: Extrusion rate of tympanostomy tubes inserted in the various quadrants of the tympanic membrane. Results: Eleven studies describing 2232 tympanostomy tubes were enrolled into the quantitative meta‐analysis. The extrusion rate was evaluated at 3‐month intervals up to 24 months post‐intubation, and it did not differ significantly at any of the time points tested for the superior and inferior anterior quadrants. The cumulative extrusion rates were as follows: 11 and 9%, 32 and 23%, 59 and 36%, 80 and 67%, 87 and 70%, 88 and 82%, and 96 and 89% in the superior and anterior quadrants, respectively, at 3, 6, 9, 15, 18, 21 and 24 months post‐intubation, respectively. Conclusion: Time to extrusion of tympanostomy tubes are similar for all 3 tympanic membrane quadrants. The anterior superior quadrant intubation has no superiority in terms of intubation time. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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28. MIDDLE EAR CHOLESTEATOMA OTITIS AFTER GROMMET INSERTION
- Author
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Adina Zamfir-Chiru-Anton, Alexandru Ulici, Valeria Vlăsceanu, Mădălina Georgescu, and Dan Cristian Gheorghe
- Subjects
middle ear cholesteatoma ,otitis ,tympanoplasty ,grommet ,Medicine (General) ,R5-920 ,Surgery ,RD1-811 - Abstract
Objective. Presenting a rare case of middle ear cholesteatoma, possible as a result of grommet insertion. The disease occured a few months after tympanostomy tube spontaneous extrusion. The Shepard tube was used to manage suppurative recurrent otitis media persisting after adenoidectomy. Material, method. Otoscopic examination of the eardrum, mastoidectomy, cartilage graft miringoplasty. Results. The patient needed surgery for removal of cholesteatoma from the middle ear and tympanic membrane reconstruction using tragal cartilage with pericondrium. Conclusions. Cholesteatoma can occur after tympanostomy tube insertion. Its incidence is very low but it should be presented as a possible complication to the patient. Precise technique for grommet insertion could prevent the disease.
- Published
- 2018
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29. Numerical Estimation of Bonding Force of EPDM Grommet Parts with Hollow Shaft Geometry.
- Author
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Shin, Dong-Seok, Jeon, Euy-Sik, and Kim, Young-Shin
- Subjects
GEOMETRY ,TENSILE tests ,EXPERIMENTAL design ,TEST methods ,PROPENE - Abstract
A grommet is a representative component that fixes the position of a cable. It is made from hyper-elastic materials (rubber), such as ethylene propylene diene monomer (EPDM). The grommet and cable are conventionally fixed through bonding; however, this method has numerous disadvantages that can be improved through relevant research. To apply a fixing method using the elastic force of EPDM rubber, this paper presents an empirical equation for approximating the bonding force of EPDM grommet parts with a hollow shaft geometry. First, tensile tests and the inverse method were used to approximate the basic mechanical properties. The physical properties were derived through basic tests; furthermore, bonding force tests and the inverse method were used on a grommet with a hollow shaft structure. In addition, the Box–Behnken design of experiments was used to predict the amount of change in the bonding force according to the geometry variables. Finally, this study was validated by comparing the approximation results derived through the design of experiments with the analysis and bonding force test results. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
30. Ventilációs tubusbehelyezés indikációja osztályunk gyakorlata alapján, a nemzetközi irányelvek összehasonlításával.
- Author
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Fruzsina, Égi, Dávid, Greksa, Péter, Kalinics, Tamás, Járai, Antónia, Kett, István, Magyarosi, and Péter, Móricz
- Abstract
Copyright of Otorhinolaryngologia Hungarica / Fül-Orr-Gégegyógyászat is the property of Hungarian Society of Oto-Rhino-Laryngology, Head & Neck Surgery and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
31. Treatment of a pontine neuroepithelial cyst by placement of a cystocisternal grommet
- Author
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Sammons, Vanessa J., McNamara, Rebecca J., Jacobson, Erica, and Kwok, Bernard
- Published
- 2010
- Full Text
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32. The strategy for management of tympanic membrane retractions
- Author
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Kuo, Chin-Lung
- Published
- 2016
- Full Text
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33. A Randomized Control Trial of Adenotonsillectomy with and without Insertion of Grommet in Treatment of Secretory Otitis Media.
- Author
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SINGH, SANJAY and KULKARNI, VIKAS
- Subjects
- *
ADENOTONSILLECTOMY , *HYPERTROPHY , *OTITIS media with effusion , *EARACHE , *SNORING - Abstract
Adenoid hypertrophy is a typical cause of adenoid breathings, nasal obstruction as well as snoring. We observed that the majority of the cases presented with Decreased hearing followed by Earache, Nasal obstruction, snoring, sore throat etc. Majority of the cases presented with adenoid facies. In our study, we evaluated the study subjects according to their tympanometry findings. Majority of the subjects in the study in both the groups presented with B type of tympanogram (69.83% in group A and 64.58% in group B), followed by Type C (30.17% in group A as well as 35.42% in group B). According to our observations, the majority of the study subjects presented with Retracted TM (70.83% Vs 66.67%), followed by dullness over the tympanic membrane (62.5% Vs 70.83%). Air-fluid level and Pneumatic otoscopic findings were rarely observed. Majority of the study subjects presented with bilateral SOM (67.64% Vs 45.83%), followed by right-sided SOM (25% Vs 33.33%) and left-sided SOM (8.33% Vs 20.83%). [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
34. Vestibular Dysfunction in Children Suffering from Otitis Media with Effusion: Does Grommet Help? An Observational Study Using Computerized Static Posturography.
- Author
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Bista, Ranishma, Datta, Rakesh, Nilakantan, Ajith, Gupta, Abhishek, and Singh, Anubhav
- Subjects
- *
OTITIS media with effusion , *SCIENTIFIC observation - Abstract
Otitis media with effusion (OME) has a detrimental effect on balance, which may not present as a clear symptom in children. This effect can be improved by the insertion of ventilation tubes. This study assesses balance in children suffering from OME pre and post operatively using computerized static posturography. 50 children of 3–6 years, suffering from OME were included in this observational descriptive study. These patients underwent myringotomy and grommet insertion. The balance was evaluated pre and post operatively after 3 months using computerized static posturography with Modified Clinical Test of Sensory Interaction on Balance under four conditions, namely eyes open/closed on firm surface/foam. Posturography mean sway velocity was deranged in these children preoperatively and it showed statistically significant improvement post operatively at 3 months. There is occult vestibular dysfunction in children with OME as assessed by static posturography which improves significantly 3 months after myringotomy and grommet insertion. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
35. Optimization of Accelerator Mixing Ratio for EPDM Rubber Grommet to Improve Mountability Using Mixture Design.
- Author
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Kim, Young Shin, Kim, Yong Tae, and Jeon, Euy Sik
- Subjects
VULCANIZATION ,RUBBER ,MIXTURES ,PROPENE ,DESIGN ,ETHYLENE - Abstract
A grommet, made of ethylene propylene diene methylene (EPDM) rubber, is an integral part used for fixing and protecting the wire inserted from the outside to the inside of vehicles. Rubber compounds exhibit various mechanical properties and vulcanization characteristics depending on the accelerator mixing ratio. These mechanical properties affect the insertion and detachment forces when the grommet is manufactured and fixed to the vehicle body. In this study, we experimentally analyzed the changes in the properties of EPDM rubber depending on the vulcanization accelerator to improve the mounting performance of the grommet, and subsequently derived the optimum accelerator mixing ratio. We implemented a mixture design strategy to derive the optimum mixing ratio for obtaining the desired mechanical properties and vulcanization characteristics. The insertion and separation forces of the existing grommet were compared with those of the grommet fabricated using the derived mixing ratio and we found that the mounting performance was improved compared to the existing grommet. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
36. Numerical Estimation of Bonding Force of EPDM Grommet Parts with Hollow Shaft Geometry
- Author
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Dong-Seok Shin, Euy-Sik Jeon, and Young-Shin Kim
- Subjects
EPDM ,grommet ,inverse method ,bonding force ,approximation ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
A grommet is a representative component that fixes the position of a cable. It is made from hyper-elastic materials (rubber), such as ethylene propylene diene monomer (EPDM). The grommet and cable are conventionally fixed through bonding; however, this method has numerous disadvantages that can be improved through relevant research. To apply a fixing method using the elastic force of EPDM rubber, this paper presents an empirical equation for approximating the bonding force of EPDM grommet parts with a hollow shaft geometry. First, tensile tests and the inverse method were used to approximate the basic mechanical properties. The physical properties were derived through basic tests; furthermore, bonding force tests and the inverse method were used on a grommet with a hollow shaft structure. In addition, the Box–Behnken design of experiments was used to predict the amount of change in the bonding force according to the geometry variables. Finally, this study was validated by comparing the approximation results derived through the design of experiments with the analysis and bonding force test results.
- Published
- 2020
- Full Text
- View/download PDF
37. An Incarcerated Grommet within the Ear Drum.
- Author
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Rajendran, Thilaga, Goh Liang Chye, and Shanmuganathan, Jothi
- Subjects
- *
EUSTACHIAN tube , *MIDDLE ear , *TYMPANIC membrane , *OTITIS media with effusion , *EAR , *MIDDLE ear ventilation , *OTOSCOPY - Abstract
Myringotomy and grommet insertion is a common otorhinolaryngology procedure performed among young children. This procedure is mostly done for children with persistent otitis media with effusion (OME). A 6-year-old boy had undergone a bilateral myringotomy with grommet insertion and adenoidectomy. During follow-up, the left grommet was seen to be incarcerated within the layers of the eardrum. Later, an endoscopic guided removal of the grommet was performed. The possible mechanisms postulated for migration of a grommet into the middle ear are difficulties in inserting the tube, the development of biofilm on the tubes' medial surface and also eustachian tube dysfunction. Though a dislodged grommet into the middle ear is a well-documented complication, there are not many images of a grommet being incarcerated within the layers of the tympanic membrane available in the literature. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
38. Optimization of Shape Design of Grommet through Analysis of Physical Properties of EPDM Materials.
- Author
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Kim, Young Shin, Hwang, Eui Seob, and Jeon, Euy Sik
- Subjects
ETHYLENE-propylene rubber ,EYELETS (Metalwork) ,MOLDING materials - Abstract
Ethylene propylene diene monomer (EPDM) has superior mechanical properties, water resistance, heat resistance, and ozone resistance. It can be applied to various products owing to its low hardness and high slip resistance properties. A grommet is one of the various products made using EPDM rubber. It is a main component of automobiles, in which it protects wires throughout the inside and outside of a vehicle body. The grommet, made of EPDM, has different mounting performance depending on the process parameters and the shape of the grommet. This study conducted optimization to improve the mounting performance of a grommet using EPDM materials. The physical properties of the main molding materials were investigated according to process parameters. A grommet was fabricated according to the process parameters of fabrication. Insertion force and separation force were examined through experiments. Nonlinear material constants were determined through uniaxial and biaxial tensile tests. The nonlinear analysis of the grommet was conducted, and a compound design that incorporated the shape parameters for the minimum load of each part was derived. Then, additional nonlinear analysis was performed. This was followed by a comparative analysis of the actual model through experimental evaluation. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
39. Otitis Media with Effusion (OME) in Urban Pediatric Population in a Tertiary Care Centre: A Clinical Study.
- Author
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Bandyopadhyay, T. and Raman, E. V.
- Subjects
- *
OTITIS media with effusion in children , *DELAYED speech , *OTITIS media in children , *PEDIATRIC otology , *SPEECH disorders , *LANGUAGE delay - Abstract
Otitis media with effusion (OME) is a common condition affecting children. It is one of the most common causes for reduced hearing in pediatric age group leading to various learning disabilities including delayed speech development. The aim of this study was to find out various epidemiological characteristics and risk factors for developing OME and various treatment modalities depending on the clinical features and their outcomes in urban pediatric population. A prospective comparative study was done in 100 children taken 50 as cases and 50 as controls for a period of 2 years. The risk factors, common presenting features and the examination and investigational findings (tympanometry) of the study condition were compared among the cases and controls. Among the 50 cases, 28 children were treated medically and 22 underwent surgical treatment in the form of Myringotomy and Grommet insertion. The patients were followed up-to 6 months in both groups. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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40. Comparison of Outcome of Myringotomy Alone with Myringotomy and Tympanostomy Tube (Grommet) in Otitis Media with Effusion (OME).
- Author
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Khan, Mudassar Ahmad, Alamgir, Ashar, and Musharaf, Muhammad
- Subjects
- *
MYRINGOTOMY , *OTITIS media treatment , *COMPARATIVE studies , *TREATMENT effectiveness , *PARAMETER estimation - Abstract
Background: To compare the outcome of myringotomy alone with myringotomy and tympanostomy tube (grommet) in otitis media with effusion (OME) in terms of improvement in hearing and tympanogram pattern. Methods: In this comparative study 60 patients diagnosed of otitis media with effusion (OME) not responding to medical treatment were included. They were divided in two groups, each of 30 patients. In first group only myringotomy was done. In second group myringotomy with tympanostomy tube insertion was done. The parameters compared were improvement of hearing and improvement in tympanogram pattern. Hearing was assessed by voice test and tuning fork tests (Rinnie's, Webers). Patients were assessed before surgery, after two weeks, after one month and after three months. Results:Out of 60 patients 39 were males and 21 were females. Age range was from 5 to 15 years with mean age 8 years. In first group there was 48% improvement in hearing and tympanogram pattern after two weeks, 55% improvement after one month and 62% improvement after three months. In second group there was 67% improvement after two weeks, 84% after one month and 95% after three months. One patient (3%) developed post op otorrhoea which was treated by conservative management. Conclusion:Myringotomy with tympanostomy tube insertion has a better outcome in terms of hearing improvement in OME patients as compared to myringotomy alone. [ABSTRACT FROM AUTHOR]
- Published
- 2018
41. Should Children With Cleft Palate Receive Early Long-Term Tympanostomy Tubes.
- Author
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Shaffer, Amber D., Ford, Matthew D., Choi, Sukgi S., and Jabbour, Noel
- Subjects
CLEFT palate ,LONGITUDINAL method ,MIDDLE ear ventilation ,RETROSPECTIVE studies ,EARLY medical intervention ,DESCRIPTIVE statistics - Abstract
Objectives: To determine whether children with cleft palate might benefit from early long-term tympanostomy tubes with the hypothesis that receiving multiple tubes is associated with shorter duration of first tubes. Design: Retrospective cohort study. Setting: Tertiary care children’s hospital. Participants: Records from 401 consecutive children with cleft palate ± cleft lip, born April 2005 to April 2010, were reviewed. After exclusion of children with cleft repair at an outside hospital, no follow-up after 5 years of age, intact secondary palate, no tubes, or tube replacement at palatoplasty, 105 children remained. Main Outcome Measure: Number of tubes. Results: Armstrong grommet tubes were placed at a median age of 6.7 months (range 2.3-19.6 months). Tubes were replaced in 55.3% of patients, with 34.0% receiving ≥3 sets. Duration of first tubes was significantly longer for children with 1 set of tubes compared with those with multiple sets (median 26 vs 19 months, P = .004). Otorrhea, but not perforation, was associated with longer duration of first tubes (median 27 vs 20.5 months, P = .028). Cleft type did not impact the proportion of patients with multiple tubes. Median age at last tube placement for children with multiple tubes was 5.0 years (range 1.9-8.7 years). Conclusion: Short duration of first tubes is associated with receiving multiple tubes. Because most patients require repeat tubes and many require tubes until school age, there is a significant need for controlled, prospective trials of early long-term tube placement in this population. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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42. Myringotomy with Grommet and Dexamethasone Instillation as a Treatment for Sudden Sensorineural Hearing Loss (SNHL)
- Author
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Sriram Nathan and Minutha R
- Subjects
Myringotomy ,business.industry ,Sudden sensorineural hearing loss ,Anesthesia ,medicine.medical_treatment ,medicine ,General Medicine ,Grommet ,business ,Dexamethasone ,medicine.drug - Published
- 2021
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43. Targeting host-microbial interactions to develop otitis media therapies
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Ruth B. Thornton and Lea Ann S. Kirkham
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0301 basic medicine ,Microbiology (medical) ,medicine.medical_specialty ,business.industry ,medicine.drug_class ,030106 microbiology ,Antibiotics ,Public Health, Environmental and Occupational Health ,Disease ,Health outcomes ,Applied Microbiology and Biotechnology ,Microbiology ,Middle ear infection ,Clinical trial ,03 medical and health sciences ,030104 developmental biology ,Otitis ,medicine ,Microbiome ,medicine.symptom ,Grommet ,Intensive care medicine ,business - Abstract
Otitis media (OM; middle ear infection) is the most common reason for pre-school children to visit a doctor, be prescribed antimicrobials, or undergo surgery. Recent Cochrane reviews of clinical trials have identified that antibiotics and grommet surgery are only moderately effective in treating OM, with recurrent or persistent infection observed in one-third of children. Research efforts are focusing on developing improved therapies to treat OM and prevent disease recurrence. The recurrent nature of OM is mostly due to the persistence of bacterial pathogens within established biofilm in the middle ear. Promising novel therapies are harnessing host-microbe interactions to disrupt middle ear biofilm and permit antibiotics to work more effectively. New approaches are also being developed to prevent OM, including new vaccines and mining the host respiratory microbiome to develop novel bacterial therapies. This review describes how our improved knowledge of human and microbial interactions is driving development of OM therapies to improve health outcomes for children in Australia and worldwide.
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- 2021
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44. Optimization of Accelerator Mixing Ratio for EPDM Rubber Grommet to Improve Mountability Using Mixture Design
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Young Shin Kim, Yong Tae Kim, and Euy Sik Jeon
- Subjects
EPDM ,accelerator mixing ratio ,mixture design ,grommet ,mountability ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
A grommet, made of ethylene propylene diene methylene (EPDM) rubber, is an integral part used for fixing and protecting the wire inserted from the outside to the inside of vehicles. Rubber compounds exhibit various mechanical properties and vulcanization characteristics depending on the accelerator mixing ratio. These mechanical properties affect the insertion and detachment forces when the grommet is manufactured and fixed to the vehicle body. In this study, we experimentally analyzed the changes in the properties of EPDM rubber depending on the vulcanization accelerator to improve the mounting performance of the grommet, and subsequently derived the optimum accelerator mixing ratio. We implemented a mixture design strategy to derive the optimum mixing ratio for obtaining the desired mechanical properties and vulcanization characteristics. The insertion and separation forces of the existing grommet were compared with those of the grommet fabricated using the derived mixing ratio and we found that the mounting performance was improved compared to the existing grommet.
- Published
- 2019
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45. Design of a Cable Sealing Solution
- Author
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Wiktor, Axel, Dropuljic, Oliver, Wiktor, Axel, and Dropuljic, Oliver
- Abstract
To seal a cable going into the chassis of a camera, a cable gasket is placed between the chassis and the gasket. This type of gasket is called a grommet. For this project, these grommets needed to be able to withstand a modular plug being pulled through and at the same time be as small as possible to fit into a small space. The purpose of this master thesis was to investigate how to make a grommet smaller, than existing solutions, while still being easy to install with an attached modular plug. The grommet is to be used in an outdoor environment and therefore had to fulfill the sealing requirement of IP67. The Ulrich and Eppinger methodology was used as a foundation for the development process and an iterative approach was integrated. Background information was gathered from interviews and similar solutions were benchmarked to get more insight into grommets. Together with needs and requirements, concepts were generated, prototyped, tested and then selected. A material evaluation was also conducted. This resulted in four concepts being prototyped in silicone rubber. The project ended up with two grommets that both used a slit. The result showed that that a grommet with a slit was the most promising concept since this could be made smaller and was the easiest to install. Testing of the prototypes also showed that some concepts with specific hardnesses and certain hole dimensions in the chassis fulfilled the IP67 requirements. This means that the resulting grommet could be implemented in future cameras that would need a sealing solution that is small and easy to install with an attached modular plug., Outdoor environment can be a tough environment for a camera. Rain, wind and dust contribute to hazardous surroundings from which the camera needs to be protected.
- Published
- 2022
46. OTITĂ MEDIE COLESTEATOMATOASĂ DUPĂ AERATOR TRANSTIMPANAL.
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Zamfir-Chiru-Anton, Adina, Ulici, Alexandru, Vlăsceanu, Valeria, Georgescu, Mădălina, and Gheorghe, Dan Cristian
- Abstract
Objective. Presenting a rare case of middle ear cholesteatoma, possible as a result of grommet insertion. The disease occured a few months after tympanostomy tube spontaneous extrusion. The Shepard tube was used to manage suppurative recurrent otitis media persisting after adenoidectomy. Material, method. Otoscopic examination of the eardrum, mastoidectomy, cartilage graft miringoplasty. Results. The patient needed surgery for removal of cholesteatoma from the middle ear and tympanic membrane reconstruction using tragal cartilage with pericondrium. Conclusions. Cholesteatoma can occur after tympanostomy tube insertion. Its incidence is very low but it should be presented as a possible complication to the patient. Precise technique for grommet insertion could prevent the disease. [ABSTRACT FROM AUTHOR]
- Published
- 2018
47. Evaluation of Ventilation Tube Placement and Long-term Audiologic Outcome in Children With Cleft Palate.
- Author
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Kim, Elissa, Kanack, Melissa D., Dang-Vu, Milan D., Carvalho, Daniela, Jones, Marilyn C., and Gosman, Amanda A.
- Subjects
ARTIFICIAL respiration ,CLEFT palate ,HEARING impaired children ,HEALTH outcome assessment ,DECISION making in clinical medicine ,MIDDLE ear ventilation ,DISEASE incidence ,CHILDREN - Abstract
Objective: The purpose of this study was to assess the effect of ventilation tube (VT) placement on long-term hearing outcomes in children with cleft palate. Study Design: Case series with chart review. Setting: Genetic and dysmorphology database at Rady Children’s Hospital–San Diego (RCHSD). Patients: Children with cleft palate diagnosis who underwent surgery at RCHSD between 1995 and 2002. Main Outcome Measure: The primary outcome studied was hearing acuity at 10 years of age. Independent variables studied included gender, age at palate repair and first VT placement, total number of VTs, number of complications, and presence of tympanic membrane perforation. Results: An increased number of tubes was associated with a greater incidence of hearing loss at age 10, even after adjusting for total number of otologic complications. The timing of initial tube placement did not have a significant effect on long-term hearing outcome in this study. Conclusions: While children with worse middle ear disease are more likely to receive more tubes and have long-term conductive hearing loss as a result of ear disease, the results of this study suggest that multiple tube placements may not contribute to improved long-term hearing outcomes. Further research focusing on long-term outcomes is needed to establish patientcentered criteria guiding decision making for ventilation tube placement in children with cleft palate. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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48. Water penetration of grommets: an in vitro study.
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Ibrahim, Yousef, Fram, Paul, Hughes, Gavin, Phillips, Pete, and Owens, David
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- *
SWIMMING , *OTOLARYNGOLOGISTS , *MIDDLE ear diseases , *SURGEONS , *CALIPERS - Abstract
The insertion of grommets has been one of the most common procedures carried out by ENT surgeons for patients with persistent middle ear fluid. There has always been apprehension at the use of grommets by patients undertaking swimming or other water sports due to concerns of grommet penetration by water into the middle ear. Despite this, no common consensus exists amongst otolaryngologists regarding post-operative advice following grommet insertion. Most studies focus on surface swimming and do not consider other activities such as diving that patients may undertake. This study aimed to determine the hydrostatic head required for water to pass through a grommet using different water-based solutions. These were selected to simulate conditions such as swimming and showering or bathing. An improved model of a grommeted middle ear (based on previous work by Ricks et al.) was constructed using two 5-ml plastic syringes, latex (from a surgical glove), two rubber neoprene membranes and a Shah Ventilation Tube (1.14 mm). Different water solutions were added to the system and the hydrostatic head measured using digital calipers. The results revealed that the hydrostatic head required to penetrate a grommet is lowest using soapy water and highest with distilled water. The differences between chlorinated water and 3% saline were not significant. We hope that this study can be used in conjunction with previous work to better prepare the ENT surgeon in giving suitable post-operative advice following grommet insertion. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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49. The Impact of Tympanostomy Tubes on Speech and Language Development in Children with Cleft Palate.
- Author
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Shaffer, Amber D., Ford, Matthew D., Choi, Sukgi S., and Jabbour, Noel
- Abstract
Objective Describe the impact of hearing loss, tympanostomy tube placement before palatoplasty, and number of tubes received on speech outcomes in children with cleft palate. Study Design Case series with chart review. Setting Tertiary care children's hospital. Subjects and Methods Records from 737 children born between April 2005 and April 2015 who underwent palatoplasty at a tertiary children's hospital were reviewed. Exclusion criteria were cleft repair at an outside hospital, intact secondary palate, absence of postpalatoplasty speech evaluation, sensorineural or mixed hearing loss, no tubes, first tubes after palatoplasty, or first clinic after 12 months of age. Data from 152 patients with isolated cleft palate and 166 patients with cleft lip and palate were analyzed using Wilcoxon rank-sum, χ2, and Fisher exact test and logistic regression. Results Most patients (242, 76.1%) received tubes before palatoplasty. Hearing loss after tubes, but not before, was associated with speech/language delays at 24 months ( P = .005) and language delays ( P = .048) and speech sound production disorders (SSPDs, P = .040) at 5 years. Receiving tubes before palatoplasty was associated with failed newborn hearing screen ( P = .001) and younger age at first posttubes type B tympanogram with normal canal volume ( P = .015). Hearing loss after tubes ( P = .021), language delays ( P = .025), SSPDs ( P = .003), and velopharyngeal insufficiency ( P = .032) at 5 years and speech surgery ( P = .022) were associated with more tubes. Conclusion Continued middle ear disease, reflected by hearing loss and multiple tubes, may impair speech and language development. Inserting tubes before palatoplasty did not mitigate these impairments better than later tube placement. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
50. Comparative Assessment of Grommets with Topical Intranasal Steroid in Cases of Otitis Media with Effusion.
- Author
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Chavan, Sushil Suresh and Nagpure, Prakash S.
- Subjects
- *
OTITIS media with effusion , *EYELETS (Metalwork) , *STEROIDS , *TREATMENT effectiveness , *MYRINGOTOMY , *LOCAL anesthetics , *THERAPEUTICS - Abstract
Aim: This study of 56 patients is to assess the effectiveness of grommet insertion compared with non-surgical treatment steroids (topical intranasal) in otitis media effusion (OME) cases and study complications related to the grommet and topical intranasal steroid. Material: A total subjects of various age groups attending out patient department of ENT, Kasturba Hospital, MGIMS Sevagram, Hospital, Wardha from june 2013 to august 2015 who meet the inclusion criteria and give their written consent in local language will be included in the study. Method: Comparison of medical and surgical management were done. Medical management include topical intranasal steroids by Mometasone fuorate. The recommended dose for treatment of the nasal symptoms is 1 spray (50 microgram of mometasone furoate in each spray). Recommended duration of spray is 2 to 4 weeks and the stated achievement of effect of spray is approximately 1 to 2 weeks. Surgical management include myringotomy with grommet insertion. Generally, myringotomy is performed in conjunction with the insertion of a polyethylene tube called as grommet. Infants and small children are best managed by performing this procedure under a general anesthetic. In older children and adults, local anesthetic can be used as a single block in posterior canal wall so as it block Arnold's nerve. Results: From this present study cases of children 10 (47.62%) patients shows improvement and 17 (48.57%) adult patient shows improvement having minimal difference. Similarly failure of treatment in children is 1 (4.76%) complications in 2 (9.52%) and in adult patients 0 (0%) complication in 2 (5.71%) it was not showing significant differences. p value was not significant and showing that the differences in value was not having any level of significance in same group. It is concluded that topical nasal steroids are not so effective as surgical drainage of exudative material (myringotomy). Conclusion: Use of steroid causes nasal irritation and temporary relief only and in some patient causes only retention of fluid. Sometimes grommet retained in tympanic membrane and not extruded out needed manual removel. Beside that Overall results are in the favour of myringotomy with grommet insertion as a better modality. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
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