Occlusion Effect of the External‐Ear Canal and Its Effect upon Bone Conduction

1964 ◽  
Vol 36 (5) ◽  
pp. 1049-1049 ◽  
Author(s):  
Juergen Tonndorf ◽  
Elliot C. Greenfield ◽  
Roger S. Kaufman
Keyword(s):  
Bone Conduction ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
Occlusion Effect

The Occlusion of the External Ear Canal: Its Effect Upon Bone Conduction in Cats

1966 ◽  
Vol 61 (sup213) ◽  
pp. 80-104 ◽  
Author(s):  
Juergen Tonndorf ◽  
Elliot C. Greenfield ◽  
Roger S. Kaufman
Keyword(s):  
Bone Conduction ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal

Shift of bone conduction threshold on occlusion of the external ear canal

1947 ◽  
Vol 57 (11) ◽  
pp. 690-703 ◽  
Author(s):  
Joseph A. Sullivan ◽  
C. C. Gotlieb ◽  
W. E. Hodges
Keyword(s):  
Bone Conduction ◽  
External Ear ◽  
Ear Canal ◽  
Bone Conduction Threshold ◽  
External Ear Canal

scholarly journals Current Treatments for Congenital Aural Atresia

2020 ◽  
Vol 24 (4) ◽  
pp. 161-166
Author(s):  
Min Young Lee ◽  
Yang-Sun Cho ◽  
Gyu Cheol Han ◽  
Jeong-Hoon Oh
Keyword(s):  
Preoperative Evaluation ◽  
Bone Conduction ◽  
External Ear ◽  
Ear Canal ◽  
Operative Techniques ◽  
Aural Atresia ◽  
Meatal Stenosis ◽  
External Ear Canal ◽  
Congenital Aural Atresia ◽  
Better Than

Congenital aural atresia is an ear malformation evident at birth, involving various degrees of failed external ear canal development. A true external ear canal is desirable, as devices that replace the canal are inconvenient and expensive. Therefore, an optimal surgical technique is required. Here, we review useful preoperative and operative techniques. Surgical correction is often not the preferred treatment; the hearing outcome is no better than the outcomes afforded by bone-conduction devices, and surgery may be associated with recurrence or complications such as meatal stenosis. Preoperative evaluation and appropriate management are important. Several means of preventing meatal stenosis are discussed in this review.

Rhabdomyosarcoma of the External Ear Canal Treated with Brachytherapy

2016 ◽  
Vol 2016 (1) ◽  
Author(s):  
Mahvish Qureshi MD ◽  
◽  
Sana Farooki MD ◽  
Chibuzo O’Suoji MD ◽  
◽  
...  
Keyword(s):  
External Ear ◽  
Ear Canal ◽  
External Ear Canal

Prevalence of external ear disorders in Belgian stray cats

2017 ◽  
Vol 20 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Anouck Bollez ◽  
Hilde de Rooster ◽  
Alessandra Furcas ◽  
Sophie Vandenabeele
Keyword(s):  
Body Condition ◽  
Otitis Externa ◽  
Body Condition Score ◽  
External Ear ◽  
Ear Canal ◽  
Malassezia Species ◽  
External Ear Canal ◽  
Stray Cats ◽  
Condition Score ◽  
Ocular Discharge

Objectives Feline otitis externa is a multifactorial dermatological disorder about which very little is known. The objective of this study was to map the prevalence of external ear canal disorders and the pathogens causing otitis externa in stray cats roaming around the region of Ghent, Belgium. Methods One hundred and thirty stray cats were randomly selected during a local trap–neuter–return programme. All cats were European Shorthairs. This study included clinical, otoscopic and cytological evaluation of both external ears of each cat. Prospective data used as parameters in this study included the sex, age and body condition score of each cat, as well as the presence of nasal and/or ocular discharge, and the results of feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) Snap tests. Results Remarkably, very few (sub)clinical problems of the external ear canal were found in the stray cat population. Malassezia species was by far the most common organism found in the external ear canals of the 130 stray cats. A total of 96/130 (74%) cats were found to have Malassezia species organisms present in one or both ears based on the cytological examination. No correlation was found between the parameters of sex, age, body condition score, the presence of nasal and/or ocular discharge and FIV and FeLV status, and the presence of parasites, bacteria or yeasts. Conclusions and relevance This study provides more information about the normal state of the external ear canal of stray cats. The ears of most stray cats are relatively healthy. The presence of Malassezia species organisms in the external ear canal is not rare among stray cats.

Prevalence of external auditory canal exostoses in Australian surfboard riders

2004 ◽  
Vol 118 (5) ◽  
pp. 348-351 ◽  
Author(s):  
William Hurst ◽  
Michael Bailey ◽  
Benjamin Hurst
Keyword(s):  
External Auditory Canal ◽  
Cold Water ◽  
Control Group ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
Rate Of Growth

This paper assessed 300 surfboard riders, comprising 229 males and 71 females to determine the prevalence and rate of growth of exostoses in this population. A group of cold water swimmers and a control group were also examined. Significant obstruction, defined as two thirds or more occlusion of the ear canal was noted in 90 of the male surfers and 10 female surfers. This degree of occlusion was found in seven of the 32 cold water swimmers. A male surfer who has surfed regularly for 20 years or more has a one in two chance of developing significant obstruction of the external ear canal resulting from exostoses and this is a three in seven chance for females.

Histopathology of the soft parts in 50 patients with malignant external otitis

1989 ◽  
Vol 103 (4) ◽  
pp. 366-368 ◽  
Author(s):  
J. Bernheim ◽  
J. Sade
Keyword(s):  
Skin Lesions ◽  
External Otitis ◽  
Pathological Feature ◽  
External Ear ◽  
Ear Canal ◽  
Malignant External Otitis ◽  
External Ear Canal ◽  
External Canal ◽  
Skin Biopsies ◽  
Skin Coverage

AbstractReports concerning the lesions of the skin coverage of the external ear canal in malignant external otitis (M.E.O.) are very few. To evaluate this problem, we studied the skin lesions of 45 skin biopsies from 40 M.E.O. patients, 23 from regions covering the osseous part of the ear structure, seven from the cartilaginous part of the external canal and 15 from both parts. The epidermis was normal in nine, thickened in 16, with acanthotic thickening and pseudoepitheliomatous hyperplasia in 20. In the dermis the amount of collagen was normal, but it was infiltrated by the inflammatory process. Acute inflammation was observed in 16 biopsies, subacute in 23, chronic in six. A mixture of acute and chronic changes was present in 18 biopsies. No major abnormalities of the vasculature could be detected. The distinguishing pathological feature of M.E.O. concerns the typical topographic distribution of the inflammation in the osseous part of the external ear canal.

Prevalence of mycoplasmas in external ear canal of goats: Influence of the sanitary status of the herd

2007 ◽  
Vol 73 (1-3) ◽  
pp. 296-299 ◽  
Author(s):  
Pascale Mercier ◽  
Marie-Pierre Pellet ◽  
Eric Morignat ◽  
Didier Calavas ◽  
François Poumarat
Keyword(s):  
External Ear ◽  
Ear Canal ◽  
External Ear Canal

scholarly journals A Study on Seven Surfer’s Ears in which External Ear Canal Plasty was Performed

2014 ◽  
Vol 140 (0) ◽  
pp. 42-43
Author(s):  
Takayuki Ota ◽  
Kazuo Matsui ◽  
Koichi Kure ◽  
Wataru Kubota ◽  
Yoshihiko Esu ◽  
...  
Keyword(s):  
External Ear ◽  
Ear Canal ◽  
External Ear Canal
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