Children’s hearing aid fitting needs to pay attention to which
In the child’s diagnosis of childpower, we know that it is difficult to judge the extent and nature of deafness in any single test. The difficulty in hearing diagnosis in children is that it is difficult to test accurate subjective hearing. Currently, this problem exists in many hearing centers or hospitals, and the degree of hearing loss is judged by objective hearing test results. Many parents will also bring all kinds of objective inspection reports to ask: the results of the examinations are not responding, is my child not hearing? The results of the objective examination cannot fully represent the child’s true hearing situation. It is necessary to pay attention to the unit of the test result and judge the result of the behavioral audiometry to obtain a more accurate threshold.
The hearing threshold means that the test signal can just be heard.50%The signal strength of the time, because children have limited ability to listen to whispers during children’s behavioral listening, the threshold of behavioral audiometry is generally higher than the actual hearing, especially the results of the first behavioral audiometry. Should be combined2-3The secondary behavioral listening result is judged by a threshold.
An accurate hearing threshold has been achieved, and the choice and commissioning of hearing aids is also very important. In terms of the choice of hearing aids, some parents think that as long as they can hear the sound, there are many kinds of sounds in nature. The language spectrum of human normal speech is very wide, and it is very difficult to hear all the sounds. It is recommended to choose a hearing aid with a wide bandwidth to help compensate and hear more frequencies. Children are in the developmental stage, and their ear canal is constantly developing and changing. The difference in length and width will affect their resonance frequency. Therefore, regular hearing test and hearing aid debugging are very important.
Children’s “small ears” factor. Because the child’s ear canal is small, because the volume of the ear canal is small, the same size of sound will produce a greater true ear response than the adult. If the adult fitting process is followed, the child’s hearing aid will be over-amplified, twice. Injury to hearing. The solution to this problem is to obtain accurate individual true ear coupling cavity difference (RECD), taken into account during the fitting processRECDThe impact of this, in order to maximize the successful selection of children’s hearing aids.
Since it is difficult for a child to feel a subjective feeling about the effect of a hearing aid after wearing a hearing aid, the evaluation of the effect of the hearing aid is also an important step in determining the fitting effect and guiding the fitting of the fitting.
Will the child speak after the hearing aid is worn? Many parents think that children wear hearing aids and their hearing is improved. Why do they need language training? Simply put, it is easy to hear the sound without listening to the language. It is easy for the child to hear the sound. Even if the child has less residual hearing, the sound can be heard once the hearing aid is amplified, but it can be understood. Sound requires a process. Being able to hear the sound is the key and foundation for understanding the language. On the basis of listening clearly, it is necessary to go through language training and learning in order to truly understand the language. And as children age, the ability to learn language is gradually degraded. Many studies have shown that children who wear hearing aids in the early days have better understanding of language and expression skills than children who are late.
Follow-up after matching: The first two years of wearing the child’s hearing aid, at least once every three months, the return visit process, such as the initial fitting, needs to assess the current hearing, the working state of the hearing aid, the hearing aid effect and speech rehabilitation Progress, etc. Parents should also keep in touch with the child’s fitter, record the wearing of the child’s hearing aid, hearing compensation and the progress of language rehabilitation, etc., to play a guiding role for the fitting of the fitter.
In short, children’s hearing rehabilitation requires a long-term and arduous task to be completed by children, parents, fitters, and language teachers.
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