The human auditory-linguistic system is a complex system that requires the participation of **** from the outer ear, the middle ear, the inner ear, the auditory nerve, the auditory center, the speech center, and any damage to any one of these links can result in hearing damage, which in turn affects the speech function, and thus has an impact on the social interaction and the quality of life. Hearing aids can compensate for hearing damage to a certain extent. Broadly speaking, hearing aids should be worn as early as possible when the hearing loss in both ears reaches a certain level.
1, the hearing aid is actually a super small loudspeaker, to cause hearing loss of disease has no therapeutic effect. In the selection of hearing aids must go through the otolaryngologist formal examination and treatment, after treatment of irreversible hearing loss of most of the people can be equipped with hearing aids, regardless of the type of hearing loss is sensorineural deafness, mixed deafness, or conductive deafness. However, certain diseases, such as auditory neuropathy, progressive hearing loss of the auditory neuroma, some of the brain center disease caused by hearing abnormalities, etc., the use of hearing aids will be very poor or ineffective.
2, according to the WHO standard hearing loss degree is divided into: mild 26-40 dB; moderate: 41-60 dB; severe: 61-80 dB; extremely severe: more than 80 dB. Simply put, once the hearing loss affects the ability of speech communication (such as answering the phone, face-to-face communication in noisy environments and other difficulties), hearing aids should be fitted as soon as possible. For special people, such as occupational requirements, often participate in important negotiations, major social activities, etc., mild hearing loss can be optional hearing aids. At the same time, it should be understood that, for severe sensorineural deafness, hearing aids can not be fully compensated for, must rely on lip reading, expression, association and other ways to help, and for very severe sensorineural deafness hearing aids can only provide partial help, this time, cochlear implantation is more effective, such as cochlear implants can also be equipped with hearing aids, but at this time, the main purpose is to maintain an acoustic environment, avoid or delay the hearing and speech in the hearing. However, the purpose is to maintain a sound environment to avoid or delay the deterioration of the auditory and speech centers. For those who are totally deaf, there is basically no help.
3. According to a survey conducted by the International Organization for Standardization (ISO), the likelihood of deafness after 30 years of working in an environment with a noise level of 85 decibels and 90 decibels is 8% and 18%, respectively. Therefore, hearing aids that indiscriminately amplify noise and speech can be detrimental to hearing under certain circumstances. Therefore, a good hearing aid should be able to: automatically adapt to the environment, effectively reduce noise, targeted to improve the recognition of speech frequencies, to protect the residual hearing; natural reproduction of sound, optimize the patient's perception of their own voice, to improve the naturalness of the sound, authenticity and comfort; automatic elimination of the feedback sound (whistling); hearing aid parameters can be adjusted according to the wearer's hearing changes; the function of hearing aids with the upgrade of the optional software. hearing aid selection software upgrade and enhancement.
4, hearing aids are not a simple commodity, can not be purchased and used arbitrarily, must undergo a rigorous fitting before wearing. The staff must be professionally trained, and the process of fitting also requires hearing tests, hearing aid audition, and evaluation of the effect of the link. If the fitting is not done properly, the consequences can be very serious. Hearing aid selection is not a "one-shot deal", the initial selection is completed, the dispenser will make regular visits (7 days, 30 days, 180 days, etc.), and there is wear unsatisfactory place can be booked at any time to debug again.
Hearing aid commissioning program includes: hearing aid gain adjustment, output adjustment and adjustment of various functions. For the first time for patients with hearing aids, hearing experts or fitters will be more conservative in the initial adjustment of the loudness and various functions of the choice, the patient to wear the first 1-2 months is the adaptation period, with the patient's own adaptation to the progress of the different need for different adjustments, generally 1-2 times fine-tuning, for the hearing of the complexity of the situation of the patient will need to be more debugging until the adjustment of the appropriate so far 5, wear hearing aids After a period of time, if you feel that the effect has decreased or even become ineffective, you need to differentiate between different situations. If it is wearing the initial period, you need to contact and communicate with your hearing experts or fitters to determine whether it is the normal adaptation process or wear matters not mastered caused by. Because the hearing aid wear early hearing experts or fitter of the hearing aid gain adjustment will be more conservative, the patient to adapt to a period of time is required to adjust a variety of debugging program. However, if accompanied by other conditions, such as a sudden decline and exclude hearing aid problems, or tinnitus, vertigo, headache, etc., should seek the help of otolaryngologists in a timely manner, except for the aggravation of pre-existing diseases or new diseases.
6. Hearing aids are recommended to be used for life, but the daily wearing time varies from person to person. For people with mild hearing loss, they can choose to wear them when they need them, and for those with moderate loss or more, they can wear them frequently in their daily lives. For pre-language deaf children, in addition to sleep, bathing, rainy day outdoor work and other circumstances is to wear, in order to ensure that the hearing compensation and speech learning.