A new adhesive bone conduction hearing system as a treatment option for transient hearing loss after middle ear surgery

We recorded auditory-evoked magnetic responses with a whole-scalp 122-channel neuromagnetometer from seven adult patients with unilateral conductive hearing loss before and after middle ear surgery. The stimuli were 50-msec 1-kHz tone bursts, delivered to the healthy, nonoperated ear at interstimulus intervals of 1, 2, and 4 seconds. The mean preoperative pure-tone average in the affected ear was 57 dB hearing level; the mean postoperative pure-tone average was 17 dB. The 100-msec auditory-evoked response originating in the auditory cortex peaked, on average, 7 msecs earlier after than before surgery over the hemisphere contralateral to the stimulated ear and 2 msecs earlier over the ipsilateral hemisphere. The contralateral response strengths increased by 5% after surgery; ipsilateral strengths increased by 11%. The variation of the response latency and amplitude in the patients who underwent surgery was similar to that of seven control subjects. The postoperative source locations did not differ noticeably from preoperative ones. These findings suggest that temporary unilateral conductive hearing loss in adult patients modifies the function of the auditory neural pathway. (Otolaryngol Head Neck Surg 1998;119:125-30.)

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ADHEAR in Conductive Hearing Loss: a case study

European Journal of Public Health ◽

10.1093/eurpub/ckaa040.021 ◽

2020 ◽

Vol 30 (Supplement_2) ◽

Author(s):

T Marques ◽

A Carvalho ◽

A Miguéis

Keyword(s):

Hearing Loss ◽

Hearing Aids ◽

Conductive Hearing Loss ◽

Bone Conduction ◽

Single Subject ◽

Non Invasive ◽

Middle Ear Cholesteatoma ◽

Bone Conduction Hearing ◽

Conductive Hearing ◽

Hearing System

Abstract Introduction Bone conduction hearing systems can be applied through non-invasive devices, using soft bands that exert pressure on the skin, or they can be surgically implanted (Bone Anchored Hearing Aid - BAHA). However, these bone conduction devices are frequently not well accepted due to the pressure on the head. Therefore, a new non-surgical hearing system was developed not to exert pressure on the skin, the ADHEAR. The bone anchorage in ADHEAR is performed through an adhesive adapter and is indicated for patients with conductive hearing loss and normal inner ear function. Objectives Evaluate the audiological performance with the adhesive bone conduction hearing device (ADHEAR) in a patient with conductive hearing loss. Methodology The study was designed as a prospective single-subject repeated-measure study with the subject serving as his own control. A 29 year old female patient who had a primary surgery due to middle ear cholesteatoma, was adapted with unilateral non-invasive adhesive bone conduction system for the treatment of conductive hearing loss. Air and bone conduction thresholds, word recognition scores (WRS) and speech recognition thresholds (SRT) in quiet and noise were assessed to verify the inclusion criteria of the study. Aided and unaided pure tone audiometry at 0.5, 1, 2 and 4 kHz in free field and speech audiometry in quiet and noise were performed at baseline and after 4 weeks with the ADHEAR. Results The functional gain with the ADHEAR averaged over 0.5, 1, 2, and 4 kHz after 4 weeks of usage of the adhesive hearing system, improved from 55 dB HL to 31dB HL. Speech perception in quiet and noise improved significantly in the aided situation, with SRT in quiet improving from 60 to 35 dB HL, when compared to the unaided condition. Similar results were found in noise. The patient evaluated the ADHEAR system as being useful, and without complaints of skin pressure. There was no adverse skin reaction. Conclusion Hearing performance was significantly better with ADHEAR under all test conditions. Therefore, this transcutaneous hearing system seems to be an excellent alternative for patients who need a hearing solution for conductive hearing loss but for clinical reasons cannot undergo surgery or conventional hearing aids. Furthermore, it preserves skin over the mastoid and reduces the risk of infection. Otherwise it has benefits verified by absence of head pressure and improvement of patient’s quality of life.

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Sensorineural Hearing Loss Caused by Middle Ear Surgery.

Nippon Jibiinkoka Gakkai Kaiho ◽

10.3950/jibiinkoka.100.740 ◽

1997 ◽

Vol 100 (7) ◽

pp. 740-746 ◽

Cited By ~ 1

Author(s):

Masafumi Sakagami ◽

Hiroshi Ogasawara ◽

Michiko Node ◽

Toru Seo ◽

Yasuo Mishiro

Keyword(s):

Hearing Loss ◽

Sensorineural Hearing Loss ◽

Middle Ear ◽

Sensorineural Hearing ◽

Middle Ear Surgery ◽

Ear Surgery

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A new adhesive bone conduction hearing system – ADHEAR – effectively treats conductive hearing loss in children

10.1055/s-0039-1686465 ◽

2019 ◽

Author(s):

K Neumann ◽

JP Thomas ◽

C Völter ◽

S Dazert

Keyword(s):

Hearing Loss ◽

Conductive Hearing Loss ◽

Bone Conduction ◽

Bone Conduction Hearing ◽

Conductive Hearing ◽

Hearing System

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Factors that have an influence on bone conduction thresholds changes after otosurgery in the patients operated on due to the perforation of the tympanic membrane with the preserved ossicular chain

Otolaryngologia Polska ◽

10.5604/01.3001.0010.2245 ◽

2017 ◽

Vol 71 (4) ◽

pp. 26-33

Author(s):

Maciej Wiatr ◽

Agnieszka Wiatr ◽

Sebastian Kocoń ◽

Jacek Składzień

Keyword(s):

Tympanic Membrane ◽

Middle Ear ◽

Negative Impact ◽

Positive Impact ◽

Round Window ◽

Bone Conduction ◽

Ossicular Chain ◽

Middle Ear Surgery ◽

Ear Surgery ◽

Study Objective

Introduction: The aim of the middle ear surgery is to eliminate abnormalities from the mucous, ensure the due airing of the postoperative cavity and reconstruct the sound-conducting system in the middle ear. Numerous reports can be found in literature on the changes to bone conduction as a consequence of middle ear surgery. Study objective: The aim of the work is to define the factors that affect bone conduction in the patients operated on due to the perforation of the tympanic membrane with the preserved and normal mobile ossicular chain. Material and method: A prospective analysis of patients operated on due to diseases of the middle ear in 2009–2012 was carried out. The cases of patients operated on for the first time due to chronic otitis media were taken into consideration. The analysis encompassed the patients who had undergone myringoplasty. The patients were divided into several groups taking into account the abnormalities of the mucous observed during otosurgery. Results: A significant improvement of bone conduction was observed in the patients with dry perforation, without other lesions in the middle ear. The appropriate pharmacological treatment before otosurgery in patients with permanent discharge from the ear resulted in significant bone conduction improvement. The elimination of granulation lesions turned out to be a positive factor for the future improvement of the function of the inner ear. Conclusions: The lack of abnormalities on the mucous of the middle ear (e.g. granulation,) and discharge has a positive impact on improvement of bone conduction after myringoplasty. Adhesions in the tympanic cavity, especially in the niche of the round window, have a negative impact on improvement of bone conduction in patients after myringoplasty.

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Can use of a cold light source in endoscopic middle ear surgery cause sensorineural hearing loss?

Indian Journal of Otology ◽

10.4103/0971-7749.187982 ◽

2016 ◽

Vol 22 (3) ◽

pp. 213 ◽

Cited By ~ 1

Author(s):

Suat Terzi ◽

Engin Dursun ◽

Abdulkadir Özgür ◽

ZerrinÖzergin Coskun ◽

ÖzlemÇelebi Erdivanli ◽

...

Keyword(s):

Hearing Loss ◽

Sensorineural Hearing Loss ◽

Light Source ◽

Middle Ear ◽

Sensorineural Hearing ◽

Middle Ear Surgery ◽

Ear Surgery

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Cholesteatoma Medial to an Intact Tympanic Membrane in 34 Young Children

PEDIATRICS ◽

10.1542/peds.74.2.236 ◽

1984 ◽

Vol 74 (2) ◽

pp. 236-240

Author(s):

Richard H. Schwartz ◽

Kenneth M. Grundfast ◽

Bruce Feldman ◽

Richard E. Linde ◽

Karen L. Hermansen

Keyword(s):

Hearing Loss ◽

Young Children ◽

Tympanic Membrane ◽

Otitis Media ◽

Middle Ear ◽

Early Stage ◽

Middle Ear Surgery ◽

Ear Surgery ◽

Simple Excision ◽

Otoscopic Examination

Thirty-five cholesteatomas medial to intact eardrums were treated in 34 children between 1976 and 1982. Six (18%) children had never had a documented episode of otitis media. Seventeen (50%) children, in whom the lesion was diagnosed at an early stage, underwent simple excision of the cholesteatoma without the need for extensive middle ear surgery. Findings from postoperative audiograms were normal for all such children. Cholesteatoma has recurred in eight (23%) children to date. Most recurrences were diagnosed 15 months or less after surgery. Routine careful otoscopic examination is essential in order to discover cholesteatoma at an early stage and to avoid hearing loss and the need for extensive otomastoid surgery. In order to perform an accurate examination of the eardrum, a halogen-illuminated otoscope and pneumo-otoscopy should be used by the pediatrician routinely. Particular attention should be paid to the posterior-superior quadrant of the tympanic membrance where a cholesteatoma is usually located.

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