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Biomedical subjects

T Renglet

Publications and source records attributed to T Renglet.

6 recordsLinked to original sources

[Cochlear implants].

A cochlear implant is a technologically advanced medical device that simulates sound in the cochlea by electrically stimulating the hearing nerve. Cochlear implants are designed to help severely or totally deaf individuals who gain little or no benefit from hearing aids. Hearing aids and assistive listening devices amplify sounds. The sounds produced by even the most sophisticated hearing aids may not offer much benefit to people with a severe-to-profound or profound hearing loss in both ears. A cochlear implant is an electronic device that provides the function of the damaged or absent hair cells by providing electrical stimulation to the remaining nerve fibers. The implant provides useful hearing and improved communication abilities to the implant user.

Adult↗

[Procedure of fitting in early rehabilitation].

The early fitting of a hearing aid is an essential extension of early diagnosis, and also the first step in restoration of function. It must form part of a global approach to the child and requires the closest cooperation between the parents and the various members of the team, most especially between the speech therapist and the audiologist prescribing the aid. The electro-acoustic properties of aids should be chosen with extreme care and great precision so as to take in the two essential requirements effectiveness and harmlessness. To achieve this, it is essential to have a thorough understanding of the residual hearing, and hence the importance of behavioural audiometry.

Audiometry↗

[Prosthetic alternatives].

It is most important to provide for the deaf child the hearing aid best adapted to the residual hearing, and as early as possible. Which ever system of amplification is chosen, auditory training will be necessary, and will be more exhaustive the greater the hearing loss. When the child derives no benefit from a conventional hearing aid, an alternative electric aid or cochlear implant will be offered. Although our role is to inform the parents, the decision to carry out a cochlear implant must be theirs.

Child, Preschool↗

[Effect of a hearing aid on progressive hearing loss].

A group of 72 children with hearing aids followed in 4 different clinical settings presented progressive increase in sensorineural hearing loss. The mean hearing loss over time, the duration of hearing aid use and the gain were studied to test the hypothesis that continued progression in hearing loss was due to overly powerful amplification. No correlation was found between the progressive increased gain levels were associated with less progression in hearing loss than at lower gain levels. Therefore, the use of hearing aids was not directly and significantly related to the increase in hearing loss in the population studied. However according to the above criteria a few cases (4%) of progressive hearing loss did seem to be associated with hearing aid use.

Acoustic Stimulation↗

[Rehabilitation programs for patients with cochlear implants as a function of acquired experience in logopedics for deaf children].

Rehabilitation of patients after cochlear implant surgery should be planified along the same basic principles as those that have been envolved for the adaptation of patients to a classical hearing aid or acoustic prosthesis. When this is adapted to a patient with a sensorineural hearing loss, the quality of hearing differs from that of normal hearing because the pathological inner ear introduces distorsions. The patient therefore has to be trained to equate the new auditory sensations with those he had previously, which is basically the same situation as with a cochlear implant. Some profoundly or totally deaf patients are fitted with vibro-tactile aids and they also have to be trained to make use of these new sensations in a meaningful way for an aid to speech understanding. For the above reasons the term "cochlear prosthesis" is considered particularly adequate. It also has the advantage of playing down the surgical aspect of this new technique, often overemphasized by the media and creating exaggerated emotional involvement of the patients. If the above facts are recognized, one should entrust the rehabilitation of patients fitted with cochlear prostheses to logopeds (speech therapists) well trained in the habilitation and prosthetic adaptation of profoundly deaf children. Only they have the expertise necessary to devise and apply a program founded upon experience. This will help avoid the pitfalls into which several surgically directed cochlear implant teams are currently falling. One of these is to design a training program in function of the tests meant to measure the patients' new capacities.(ABSTRACT TRUNCATED AT 250 WORDS)

Child↗

Auditory neuropathy with preserved cochlear microphonics and secondary loss of otoacoustic emissions.

Auditory neuropathy is defined as absent or severely distorted auditory brainstem responses with preserved otoacoustic emissions and cochlear microphonics. This entity can be found in various circumstances including pre-lingual children. An almost universal characteristic reported from adult patients is the ineffectiveness of traditional hearing aids. Adequate management of pre-lingual cases therefore remains an open problem. This paper describes two pre-lingual children whose follow-up data demonstrated a selective loss of the otoacoustic emissions, whereas the cochlear microphonics remained preserved. In one of the patients, hearing aid fitting as soon as she lost her otoacoustic emissions proved successful. These findings have important implications for the operational definition of the condition, since one must be prepared to encounter cases with absent otoacoustic emissions. The present data also demonstrate that conventional amplification can benefit pre-lingual auditory neuropathy cases, at least once they have lost their otoacoustic emissions.

Adult↗