scholarly journals Middle Ear Infection Postimplantation: Response of the round Window Membrane to Streptococcus Pyogenes

1987 ◽  
Vol 96 (1_suppl) ◽  
pp. 53-54 ◽  
Author(s):  
N. E. Cranswick ◽  
B. K-H. Franz ◽  
G. M. Clark ◽  
R. K. Shepherd ◽  
D. M. Bloom
Keyword(s):  
Inflammatory Response ◽  
Inner Ear ◽  
Streptococcus Pyogenes ◽  
Middle Ear ◽  
Round Window ◽  
Round Window Membrane ◽  
Ear Infection ◽  
Mechanical Disruption ◽  
Middle Ear Infection ◽  
Pass Through

The seal of the implanted round window membrane to resist Streptococcus pyogenes invasion from the middle ear was investigated in 12 cats. Results showed that the implanted round window membrane is able to form a barrier for S pyogenes starting 1 week postimplantation. Under normal conditions S pyogenes did not pass through the round window membrane, nor through the gap that existed between the membrane and the prosthesis. Mechanical disruption of the round window seal, however, and severe inflammatory response to S pyogenes caused the infection to extend into the inner ear.

scholarly journals Luc Abscess: A Rare Complication of a Common Pediatric Ear Infection

2021 ◽  
Vol 27 (1) ◽  
pp. 20-24
Author(s):  
Nurfadhilah Aisyah Murad ◽  
Zalilah Musa ◽  
Kharudin Abdullah ◽  
Irfan Mohamad
Keyword(s):  
Inflammatory Response ◽  
Bacterial Infection ◽  
Otitis Media ◽  
Middle Ear ◽  
Rare Complication ◽  
Bone Involvement ◽  
Ear Infection ◽  
Temporal Muscle ◽  
Middle Ear Infection ◽  
The Difference

Middle ear infection occurs when fluid accumulate in middle ear as a result of inflammatory response to viral or bacterial infection. Infections may spread from the middle ear, resulting in a subperiosteal collection beneath the temporal muscle. Luc abscess is a rare complication of otitis media. The difference of this complication with other extracranial abscesses relating to otitis media is, it may not be associated with mastoid bone involvement. Therefore, it is defined as benign complication of otitis media. Here, we report a case of 10-month-old baby boy diagnosed with Luc abscess with mastoid involvement.

Cochlear Implantation: Strategies to Protect the Implanted Cochlea from Middle Ear Infection

1986 ◽  
Vol 95 (1) ◽  
pp. 66-70 ◽  
Author(s):  
Robert K. Jackler ◽  
Gerard M. O'Donoghue ◽  
Robert A. Schindler
Keyword(s):  
No Value ◽  
Middle Ear ◽  
Round Window ◽  
Scala Tympani ◽  
Ear Infection ◽  
Middle Ear Infection ◽  
Sealing Material ◽  
High Incidence ◽  
Group A ◽  
Bioactive Ceramic

A cochlear implant for use in children must take into account the high incidence of middle ear infection in this age group. A scala tympani electrode that traverses the middle ear and round window will likely act as a conduit by which infection can spread to the inner ear and potentially to the CNS. In this study an attempt was made to reestablish a separation of the cochlea from the middle ear by developing a seal around the implant at the level of the round window. A series of cats were implanted with simulated cochlear prostheses consisting of either a plain Silastic cylinder, a Silastic cylinder wrapped with autogenous fascia, or a Silastic cylinder with a cuff of bioactive ceramic. Middle ear infection was induced, followed by histologic examination. Bioactive ceramic appears to have some merit as a round window sealing material, while fascia was shown to be of no value. Intracochlear infection, when it did occur, was limited to the basal regions of the cochlea.

scholarly journals Salvage Eustachian Tube Cartilage Chip Insertion After Multiple Transnasal Shim Operations in Intractable Patulous Eustachian Tube

2021 ◽  
pp. 014556132199500
Author(s):  
Wei-Ting Lee ◽  
Heng-Jui Hsu
Keyword(s):  
Surgical Technique ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Repeat Surgery ◽  
Ear Infection ◽  
Middle Ear Infection ◽  
Tube Lumen ◽  
Management Method ◽  
Patulous Eustachian Tube

This article presents 2 cases of extremely intractable patulous Eustachian tube following multiple transnasal shim insertion. These cases highlight the disadvantages of repeat transnasal shim operations, including enlargement of the Eustachian tube lumen, frequent dislocation, repeat surgery, recurrent middle ear infection, and shim misswallowing. The patients in these cases were successfully treated with Eustachian tube cartilage chip insertion through a postauricular approach. We describe the surgical technique and advantages of this promising management method.

Middle Ear Infection (Otitis Media)

1990 ◽  
Vol 9 (12) ◽  
pp. 936
Author(s):  
S. Michael Marcy ◽  
Michael E. Pichichero ◽  
Richard H. Schwartz
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Ear Infection ◽  
Middle Ear Infection

Role of the Round Window Membrane in Middle Ear Immune Responses

1988 ◽  
Vol 105 (sup457) ◽  
pp. 139-143 ◽  
Author(s):  
E. M. Keithley ◽  
A. F. Ryan ◽  
J. P. Harris
Keyword(s):  
Immune Responses ◽  
Middle Ear ◽  
Round Window ◽  
Round Window Membrane

scholarly journals Cutaneous and Labyrinthine Tolerance of Bioactive Glass S53P4 in Mastoid and Epitympanic Obliteration Surgery: Prospective Clinical Study

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Daniele Bernardeschi ◽  
Yann Nguyen ◽  
Francesca Yoshie Russo ◽  
Isabelle Mosnier ◽  
Evelyne Ferrary ◽  
...  
Keyword(s):  
Bioactive Glass ◽  
Inner Ear ◽  
Round Window ◽  
Bone Conduction ◽  
Hearing Threshold ◽  
Round Window Membrane ◽  
Prospective Clinical Study ◽  
Local Skin ◽  
Local Skin Reaction ◽  
Bone Conduction Hearing

Objective. To evaluate the cutaneous and the inner ear tolerance of bioactive glass S53P4 when used in the mastoid and epitympanic obliteration for chronic otitis surgery.Material and Methods. Forty-one cases have been included in this prospective study. Cutaneous tolerance was clinically evaluated 1 week, 1 month, and 3 months after surgery with a physical examination of the retroauricular and external auditory canal (EAC) skin and the presence of otalgia; the inner ear tolerance was assessed by bone-conduction hearing threshold 1 day after surgery and by the presence of vertigo or imbalance.Results. All surgeries but 1 were uneventful: all patients maintained the preoperative bone-conduction hearing threshold except for one case in which the round window membrane was opened during the dissection of the cholesteatoma in the hypotympanum and this led to a dead ear. No dizziness or vertigo was reported. Three months after surgery, healing was achieved in all cases with a healthy painless skin. No cases of revision surgery for removal of the granules occurred in this study.Conclusion. The bioactive glass S53P4 is a well-tolerated biomaterial for primary or revision chronic otitis surgery, as shown by the local skin reaction which lasted less than 3 months and by the absence of labyrinthine complications.

Inner Ear Pathology and Otitis Media

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 249-253 ◽  
Author(s):  
Michael M. Paparella ◽  
Marcos V. Goycoolea ◽  
William L. Meyerhoff
Keyword(s):  
Inner Ear ◽  
Otitis Media ◽  
Round Window ◽  
Round Window Membrane

Insidious inner ear complications of otitis media have been and are being studied in our laboratory. The purpose of this paper is to review these studies, coordinate, capsulize and highlight the results with emphasis on the transport role of the round window membrane.

Frequency of hearing impairment in children between the age of 2 to 10 years with middle ear infection

2021 ◽  
pp. 1-10
Author(s):  
Sultan Badar Munir ◽  
Imran Saeed ◽  
Sikander Ghayas Khan ◽  
Syed Shakeel Ur Rehman ◽  
Rabia Ghayas ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Middle Ear ◽  
Sampling Technique ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Ear Infection ◽  
Middle Ear Infection ◽  
Ear Infections ◽  
Convenience Sampling

Abstract This study was conducted to find out frequency of hearing impairment in middle ear infection. The study design was a cross- sectional survey, conducted from August 2018 to January 2019 in the ENT Department of Children's Hospital Lahore. The data was collected through convenience sampling technique among 52 patients of middle ear infection. The measurements for level of hearing impairment were taken. The data was analyzed using statistical package for social sciences, SPSS 20.0 Out of total 52, There were found 15 (28.8%) had once a month ear infection and 37 (71.2%) had off and 35 (67.3%) patients had mild hearing, 13 (25%) had moderate, 2(3.8%) severe and 2 (3.8%) had normal hearing loss. It was concluded that most of the participants having middle ear infections had hearing loss. Keywords: Hearing Impairment, Middle Ear Infection, Continuous...

Sign in / Sign up

Export Citation Format

Share Document