Under normal circumstances, our hearing can distinguish hundreds of thousands of nuances of sound. Once obstacles appear, we cannot hear the sound that normal people can hear, cannot exchange information with relatives and friends, cannot hear the conversation when watching TV, and more importantly. The point of not hearing sound will make us lose the sense of surrounding sounds, become dull and sluggish.For deaf patients with residual hearing who wish to improve their speech and communication skills, they may consider the option after medication or surgery is ineffective, and their condition is stable. Hearing aid .
Hearing aid is a device that helps to listen to sound, through which the sound can be amplified to different degrees.When patients cannot effectively improve their hearing through drugs, surgery and other methods, and accept the doctor’s suggestion to improve communication through hearing aids, they should pay attention to the correct choice of hearing instruments that suit them.
How to match a hearing aid? Choosing a hearing aid is a professional and complicated process, roughly going through the following 6 steps:
The first step is to check the external auditory meatus.See if there is ear canal eczema, ear leakage or ear canal deformity, etc.; clean the cerumen, observe the condition of the tympanic membrane, and get a preliminary understanding of the cause of hearing loss.
The second step is to do audiological examination.For most patients, pure tone audiometry is sufficient; for children with low coordination, auditory evoked potentials, multi-frequency steady-state evoked potentials, 40 Hz related potentials, acoustic reflex and otoacoustic emission tests should be performed .Subjective testing also requires behavioral audiometry. Only after a comprehensive understanding of the hearing threshold and auditory dynamic range of high frequency, intermediate frequency and low frequency through a variety of methods, a more accurate fitting can be achieved. Hearing aid .
The third step is to select hearing aids.According to the patient’s age, occupation and life needs, help patients choose different hearing aids.For example, patients who are older or very young and have severe hearing loss can consider wearing a BTE machine, because the machine is larger in appearance, easy to operate, and has a large output power; younger patients should use a concealed customized machine, which requires more sound quality. High, it needs to be equipped with machines with complex functions and high prices.
The fourth step is the adjustment of hearing aids.Including the order design of the customized machine, the design and manufacture of the ear mold, and the adjustment of the frequency response of the hearing aid.
The fifth step is the evaluation of hearing aid effects.The effect evaluation methods that can be done immediately after wearing the hearing aid include real ear analysis, hearing threshold of sound field environment and speech resolution test.
The sixth step is to develop a follow-up plan.It is important to point out that after wearing a hearing aid, you must have regular follow-up visits. It is necessary to know that the hearing aid is a functional rehabilitation device. While hearing aids, hearing usually changes, and the adjustment of hearing aids also requires constant changes.Only through careful selection and close follow-up can the function of hearing aids be fully utilized.
4. There must be an adaptation period for hearing aids for the first time.The elderly wear hearing aids have an adaptation period, about three to five months.During the adaptation period, the volume of the hearing aid should be turned down as much as possible. At the beginning, the wearing time should not be too long, just a few minutes each time, and then gradually increase.