scholarly journals Contralateral Occlusion Test (COT): the effect of external ear canal occlusion with aging

CoDAS ◽  
2019 ◽  
Vol 31 (3) ◽  
Author(s):  
Luís Roque Reis ◽  
Luís Castelhano ◽  
Filipe Correia ◽  
Pedro Escada
Keyword(s):  
Hearing Loss ◽  
Tuning Fork ◽  
Age Groups ◽  
Sound Field ◽  
External Ear ◽  
Ear Canal ◽  
Occlusion Test ◽  
External Ear Canal ◽  
Hearing Thresholds ◽  
And Gender

ABSTRACT Purpose This study aimed to evaluate the effects of complete external ear canal occlusion on hearing thresholds with aging. The goal was to decide which tuning fork is more appropriate to use for the contralateral occlusion test (COT), in individuals of different ages. Methods Forty-two normal hearing subjects between 21 and 67 years were divided into three age groups (20-30 years, 40-50 years, and 60-70 years). Participants underwent sound field audiometry tests with warble tones, with and without ear canal occlusion. Each ear was tested with the standard frequencies (250, 500, 1000, and 2000 Hz). The contralateral ear was suppressed by masking. Results Hearing thresholds showed an increase as the frequency increased from 20.85 dB (250 Hz, 20-30 years group) to 48 dB (2000 Hz, 60-70 years group). The threshold differences between occlusion and no occlusion conditions were statistically significant and increased ranging from 11.1 dB (250 Hz, 20-30 years group) to 32 dB (2000 Hz, 20-30 years group). We found statistically significant differences for the three age groups and for all evaluations except to 500 Hz difference and average difference. The mean hearing loss produced by occlusion at 500 Hz was approximately 19 dB. We found no statistically significant differences between right and left ears and gender for all measurements. Conclusion We conclude that the use of the 512 Hz tuning fork is the most suitable for COT, and its use may allow clinicians to distinguish mild from moderate unilateral conductive hearing loss.

scholarly journals Cochlear Implantation in Patients with Keratitis-Ichthyosis-Deafness Syndrome: A Report of Two Cases

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Birgul Gumus ◽  
Armagan Incesulu ◽  
Mehmet Ozgur Pinarbasli
Keyword(s):  
Hearing Loss ◽  
Hearing Aids ◽  
Cochlear Implantation ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
Brainstem Response ◽  
Visual Disturbances

Background.Keratitis-ichthyosis-deafness (KID) syndrome is a syndrome which presents with hearing loss and visual and keratinization disorders. In such patients, hearing aids cannot be effectively used in the rehabilitation of hearing loss because of the frequent blockage of the external ear canal with epithelial debris and due to dry and tense skin of the external ear canal. Moreover, severe or profound hearing loss also limits the benefits gained from the conventional hearing aids. On the other hand, cochlear implantation is a method that has been used in limited cases in the literature.Case Report.This study presents the results of cochlear implantation applied in our clinic to two children who had been diagnosed with KID. Audiological assessments before and after the cochlear implant operation were performed using pure-tone audiometry, immittance audiometry, and auditory brainstem response (ABR), and the postoperative follow-up was conducted using pure-tone audiometry.Conclusion.Skin problems, visual disturbances, and other additional problems complicate the short-term and long-term rehabilitation after implantation in individuals with KID syndrome. Close monitoring should be exercised due to possible skin complications that may develop during the postoperative period. The families and rehabilitation teams should be warned about the possible visual disturbances and skin complications.

Outcome of 22 cases of perforated tympanic membrane caused by otomycosis

2001 ◽  
Vol 115 (11) ◽  
pp. 879-880 ◽  
Author(s):  
William B. Hurst
Keyword(s):  
Hearing Loss ◽  
Tympanic Membrane ◽  
Otitis Externa ◽  
Residual Hearing ◽  
External Ear ◽  
Ear Canal ◽  
Trichloracetic Acid ◽  
External Ear Canal ◽  
Discrete Area ◽  
Perforated Tympanic Membrane

Twenty-two cases of perforated tympanic membrane due to fungal otitis externa were observed over a five-year period.The diagnosis of fungal otitis externa was made on clinical grounds due to the obvious presence of fungal bloom in the external ear canal. Some perforations were noted at the first treatment after the fungal debris had been removed from the external ear canal using a microscope. Other perforations were observed to develop over a few days. Initially, a discrete area of the tympanic membrane appeared white and opaque. As time progressed the white area disintegrated, forming a perforation. Once the otitis externa had resolved most perforations healed spontaneously. Two that were observed to develop during treatment required a myringoplasty. Another one closed significantly but a tiny persistent perforation required cauterization with trichloracetic acid to encourage it to close over completely. The only residual hearing loss was in a case with almost total disintegration of the tympanic membrane requiring a myringoplasty.Treatment of fungal otitis externa for the patients in this series was aural toilet using suction under a microscope and insertion of a gauze wick saturated in a combination of hydrocortisone, clotrimazole, framycetin and gramicidin.

scholarly journals Metastasis of Colonic Adenocarcinoma to the External Ear Canal: An Unusual Case with a Complex Pattern of Disease Progression

2005 ◽  
Vol 84 (1) ◽  
pp. 36-38 ◽  
Author(s):  
Henry J. Carson ◽  
Jeffrey S. Krivit ◽  
Stanley G. Eilers
Keyword(s):  
Hearing Loss ◽  
White Male ◽  
Previous History ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal ◽  
History Of ◽  
Adenocarcinoma Of The Colon ◽  
Imminent Death ◽  
The Right

We report on a patient who developed far-ranging metastases of adenocarcinoma of the colon that followed a gradual cephalad progression, including the right external ear canal, and led to hearing loss. The patient was a 63-year-old white male with stage III adenocarcinoma of the colon. After 2 years with metastases elsewhere, he developed hearing loss on the right side. Physical examination of the head and neck showed a mass in the external ear canal, and biopsy confirmed adenocarcinoma. After removal, the patient's hearing improved. This case is interesting not only because of the unusual metastasis to the external ear canal, but also because of the patient's previous history of metastasis over the course of more than 2 years. The significance of such wide-ranging metastases is that metastasis of adenocarcinoma to the ear did not signal imminent death, and relief of the hearing loss it caused was possible.

scholarly journals The Role of Occlusion of the External Ear Canal in Hearing Loss

2019 ◽  
Vol 57 (3) ◽  
pp. 122-126
Author(s):  
Dakshaini A. Narayanan ◽  
◽  
Rajagopalan Raman ◽  
Aun Wee Chong ◽  
◽  
...  
Keyword(s):  
Hearing Loss ◽  
External Ear ◽  
Ear Canal ◽  
External Ear Canal

scholarly journals Malignant Mucosal Melanoma of the Eustachian Tube With Extension Into the Ipsilateral External Ear Canal: A Case Report and Review of the Literature

2020 ◽  
pp. 014556132090481
Author(s):  
Lifeng Li ◽  
Nyall R. London ◽  
Xiaohong Chen
Keyword(s):  
Hearing Loss ◽  
Differential Diagnosis ◽  
Eustachian Tube ◽  
Middle Ear ◽  
Mucosal Melanoma ◽  
External Ear ◽  
Review Of The Literature ◽  
Ear Canal ◽  
External Ear Canal ◽  
External Canal

Mucosal melanoma arising in the middle ear or eustachian tube is uncommon. We present a patient with hearing loss and otalgia found to have mucosal melanoma which occurred in the eustachian tube with extension into the middle ear cavity and external ear canal. Otologic clinics was consulted and biopsy of the mass located at the external canal was performed to ascertain the pathological diagnosis. The patient refused immunotherapy and surgery instead of undergoing radiotherapy and died from hepatic metastasis 8 months later. The mucosal melanoma originated from the eustachian tube with extension into the external ear canal is exceedingly rare, and the differential diagnosis should be considered for tumors in external ear canal.

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
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