How to choose a hearing aid
How to choose the right child hearing aid?
How to choose the right child hearing aid? Professional fitting is essential! In the daily reception of hearing aid stores, we found that many parents have a phenomenon or misunderstanding for buying hearing aids for their children: parents only think that expensive models or good models are bought by others! Here are a few tips to teach you how to choose the right child hearing aid.
1. Read the hearing report
The child's hearing test report is just a few things: acoustic impedance, auditory brainstem potential ABR, multi-frequency steady-state ASSR, (tibia) CT imaging (displaying the middle, inner ear and inner auditory). Hospitals generally only do these objective tests. In general, these results must be converted into units of pure tone hearing: listening level analysis, they can only predict residual hearing, and there is an error in the actual hearing loss (pure listening behavior). For children who are still unable to complete pure tone audiometry, parents should eliminate the need for visual enhancement and other behavioral audiometry and multi-frequency steady state to choose to buy hearing aids! Before choosing a hearing aid, try to cooperate with the fitter to conduct a subjective behavior test, and combine the behavior test results with ASSR, brainstem ABR and other reports to fully understand the child's hearing loss and hearing quality.
2, power first and performance
Children's hearing loss is generally more serious, and the hearing is difficult to measure very accurately. If you choose a child's hearing aid, you should reserve enough gain. If the child's low frequency hearing loss has a frequency defect, or the overall low frequency hearing loss reaches 100dB, and the low frequency of the behavioral listening and listening control is greater than 90, please consider the digital machine of 675 battery. For children with high frequency greater than 110, if the low frequency is also very poor, then parents need to be prepared for the electronic cochlea. Before the artificial cochlear implant for the child, if the age is acceptable (the younger is generally less than 18 months) It is best to use a super power hearing aid for at least half a year for your child. Wearing a hearing aid with such a large hearing loss may not achieve good results, but if the child can understand the simple words after wearing the hearing aid, the risk of poor effect after implantation of the cochlear implant is greatly reduced. When choosing a hearing aid for a very severe child, you should fully consider the low-frequency compensation effect and the gain of the hearing aid. You must hear it before you hear it!
3, the choice of brand
Parents who are interested may notice that children who have good effects in hearing the brand's hearing aids also have children who are not very effective. In fact, the primary determining factor for children's wearing hearing aids is the child's hearing and what causes it. Hearing loss, the hearing aid just amplifies the sound so that the child can hear the original speech (before the hearing aid is not heard), which is what every brand can do, otherwise it can not be called a hearing aid, that is to say From the single aspect of the effect, as long as the power of the hearing aid is appropriate, there is almost no difference between the hearing aids of each brand.
However, there are some differences between different brands in terms of design details, noise control concept, product stability, water resistance, children's ear hooks, etc. These differences can hardly affect the effect, but will be comfortable and post-service. Relevant to the degree of complexity, such as a product stability and poor waterproof performance, increased maintenance rate in the later period, will delay the child's language training time.
In addition, various manufacturers have introduced hearing aids for children. The difference between pediatric hearing aids and adult hearing aids is that different ear hooks are designed for the child's auricle structure, the battery is equipped with a locking device, and the light is prompted to work, etc., in the nature of sound amplification and adults. There is no essential difference between hearing aids. Therefore, the market significance of this behavior is far greater than the substantive difference.
In summary, parents should not give up their original hearing aids when they choose a hearing aid brand because they see that a certain child wears a certain hearing aid (many manufacturers' marketing activities are performances or demonstrations with good children). It is extremely irrational to chase the wind even if it is not used for a long time.
4, behind the ear hearing aid or in-ear hearing aid
The ear-back hearing aid is also an in-ear hearing aid. The ear-back type has a large appearance and is easy to be found on the ear. However, because the resonance sound tube is long, good sound quality can be obtained, and the power is large, and the child can change the ear mold. Time does not affect the child's use. The custom machine is small and beautiful, but the relative power is smaller. If it is a small child, it will not be used for too long. Because the child's ear canal needs to change the outer casing, the hearing aid can not be used during the replacement of the outer casing, so the parents and the fitting The teacher has some difficulties in choosing. Generally speaking, if the child is too young, less than 5 years old, it is too frequent to choose a custom machine to change the case too much, and it is not suitable to choose. If the family is not too concerned about the appearance, it is recommended to choose. Ear machine, using ear molds. If you want to use a custom machine, your child's age should be a little bigger, and the ear canal changes are not as fast as you can consider.
5, the details determine the effect
Children's hearing aids must be selected with some details in the fitting, and the details often determine the effect of the fitting. Ear model is the most important point in many details. For example, children with low frequency can be said to be lucky. After choosing the right product, you must choose the appropriate open ear mold to fully protect your child's low frequency hearing and expand the child as much as possible. The low-frequency listening field allows the child to hear more real sounds in order to achieve both comfort and safety. Parents in smaller cities, if they don't have these technical support, should try to urge the fitter to make hard ear molds for the low-frequency children and open the air holes. When a child with high frequency hearing loss chooses an ear mold, there is still a detail to consider. It is best to choose a reinforced ear mold sound tube to prevent the attenuation of the high frequency compensation effect. Only by fully considering the details will the perfect compensation effect of the hearing aid be used to help the child get out of the first step in life.
6, hearing aid evaluation
If the child's hearing aid is selected without the hearing aid effect evaluation, the child's hearing compensation situation: whether it is heard clearly, how much can be heard clearly, whether it is comfortable to listen, whether it will damage the residual hearing, etc., so that the hearing aid is sold. Don't buy it! Otherwise, parents will fall into: the hearing aid effect is not ideal - change the machine - the language training effect is not ideal - cochlea - the cost of money, time and energy is difficult to count, the real fallacy is the child's recovery of gold period.