The ability to hear is the ability to perceive sound waves. Frequency of air fluctuations determines the height of the sound. It is believed that a person has a good hearing if he perceives the frequencies of 20 hertz. The threshold of hearingness is determined depending on the age of a person, its training and physiological state.
Content
Noise of various intensity. Especially high load exposed
Hearing organs of urban residents. Industrial, transport noise and
Household noises create a huge load on the hearing apparatus of a person.
Repeating sound loads whose value exceeds 70
Decibelov, lead to significant, and even complete hearing loss. If
The intensity of sound reaches 140 decibels, a person can feel pain.
Statistics says that each
year the number of urban residents who suffer from hearing loss or deafness,
grows by 15-25%. Moreover, the beginning of the disease is usually not
notice.
What could be the reason for the reduction of hearing up to a complete deafness?
- Suffered injuries (cranknogo-brain, mechanical Ear injuries);
- Infectious diseases (otitis, vascular disorders);
- Reception of drugs having a negative side effect, which suffer from the auditory apparatus;
- Long impact High intensity noise;
- Violation of elementary hygiene rules, as a result of which sulfur traffic jams accumulate in the ears.
What are the signs of the start of the worsening of the hearing?
First of all, the person stops
Hear high frequencies. Initially, this is a whistle, whisper, thin sounds
phone, doorbell, bird singing.
Next stage of the disease
It is characterized by the fact that there are difficulties in communication: a person is bad
Recognizes interlocutor speech. He is hardly given telephone conversations,
hiking in public places also do not give pleasure. Such
a person all increases the volume of the TV and radio, and when talking with
loved ones turns to them with one ear.
If you have noticed or your own signs of worsening hearing, immediately contact the otolaryngologist.
For diagnosis, most often not
Requires serious research. The threshold of hearing is determined by the doctor
At the time when the patient repeats the words and sounds pronounced by him
then loudly, then quiet. In the most difficult cases, the patient is prescribed
Check on audiometer.
According to the results of the diagnosis, either rehabilitation treatment is assigned,
either hearing-leating. It must be said that only in 10% of cases
Hearing loss can be restored by medical pathways, in other cases
The correction of auditory devices is shown.
Hearing devices are several types:
- Pocket. Easy to manage, but cumbersome and having a small selection of settings.
- Consishes.
Most often are used. Compact and ergonomic. Majority
Models can be connected to a TV or music center.
- Oil.
Insert directly in the ear. They are manufactured by individual
order because it should be as accurate as possible in form to
Own sink. And, as you know, the shape of the auricle – also
Unique, like fingerprints.
Currently the most effective
are programmable digital devices that provide
Maximum hearing of informative sounds and weakening strength
Sound Noise.
If there are no irreversible hearing changes,
then the hearing aids can contribute to its restoration. Pick up
They should only specialist, churchologist. Any amateurness
can harm your health.
