Hearing Impairment Definition
Hearing impairment is total or partial inability to hear sound.It is also called hearing loss. It may be mild, moderate, severe, and profound. Some patients with the mild hearing impairment may have problems understanding speech, especially if there is a lot of noise around, while those with moderate deafness may need a hearing aid. Hearing loss may be occur in one or both ears.
Some severely deaf people rely on lip-reading to communicate with others. Some People who are profoundly deaf can hear nothing at all and can find themselves totally reliant on lip-reading or sign language.
Hearing impairment is total or partial inability to hear sound.It is also called hearing loss. It may be mild, moderate, severe, and profound. Some patients with the mild hearing impairment may have problems understanding speech, especially if there is a lot of noise around, while those with moderate deafness may need a hearing aid. Hearing loss may be occur in one or both ears.
Some severely deaf people rely on lip-reading to communicate with others. Some People who are profoundly deaf can hear nothing at all and can find themselves totally reliant on lip-reading or sign language.
Causes
Genetics
Ageing
Medication
Birth complications
Trauma and injury
Other diseases that can affect hearing loss
Ageing
Medication
Birth complications
Trauma and injury
Other diseases that can affect hearing loss
Types
There are some different types of hearing loss.
Conductive hearing loss
In this type of hearing loss the vibrations are not passing through from the outer ear to the inner ear, specifically the cochlea.
this type of hearing impairment can often be treated with surgical intervention or pharmaceuticals to partially or, in some cases, fully restore hearing acuity to within normal range. However, cases of permanent or chronic conductive hearing loss may require other treatment modalities such as hearing aid devices to improve detection of sound and speech perception.
Sensorineural Hearing Loss
Hearing damage is caused by inner ear dysfunction, cochlea, auditory nerve, or brain damage.This type of hearing loss is usually caused by damaged hair cells in the cochlea. As humans grow older, hair cells lose some of their function and become impaired.
Long-term noise, especially high-frequency sound, can cause hair cell damage. Damaged hair cells cannot be replaced. Currently, research is using elements to develop new hair cells.
Congenital malformation, inner ear infection or head injury can lead to sensory total deafness.
Mixed Hearing Loss
It is a combination of conductive and sensory hearing loss. Chronic ear infections can cause damage to both the ear and the ear. Sometimes, surgical intervention can restore hearing, but it is not always effective.
Levels and Stages of Deafness
Mild
Mild deafness or hearing impairment: A person can only detect sounds between 25 and 29 decibels (dB). They may have difficulty understanding the words that other people are saying, especially if there is too much background noise.
Moderate
Moderate deafness or moderate hearing loss: A person can only detect sounds between 40 and 69 dB. It is difficult to negotiate using hearing aids alone without using hearing aids.
Severe
Severe Deafness: The person only hears sounds greater than 70 to 89 dB. A severely deaf person should use lip-read or sign language to communicate, even if he or she has hearing aids.
Profound
Deep Deafness: Anyone who does not hear noise less than 90 dB can have profound deafness. Some people who are profoundly deaf hear nothing at the decibel level. Communication is done using sign language, lip reading or reading and writing.
Post a Comment
Post a Comment