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mercredi 19 février 2014

Kinds Of Hearing Evaluation Tests For Younger Generation

By Serena Price


When carrying out a hearing evaluation on your child, the doctor actually performs a full physical examination and dig deep into the medical history of the child. This is not the only way of examining the hearing ability of your child, there are other tests. While some of these tests are applicable to all ages, others are meant for a specific age of a child as well as his ability to understand. Here is a breakdown of various tests done on children with different ages.

On a newly born, two types of examinations can be carried out. These examinations can be done either alone or both at the same time. ABR stands for Auditory brainstem response is the initial test. Wires that are glued to the baby scalp are used on this examination. When the baby is awake they may destruct the physician and prevent the test from being carried out well so the test is conducted when the baby is asleep. On the babies ear a set of earphones are placed and they make a clicking sound. The test seeks to find out the level of brain function ability in relation to the applied clicking sounds. The great news is that the child is not subjected to any form of pain.

The other examination is known as evoked otoacoustic emissions (EOAE). This test unlike the other one utilizes plugs that are small and flexible into your babies ear. The function of the plugs is to send sounds in the ear. The otoacoustic feedback of the sound made in the ear is recorded by a microphone within the inserted plug. The similarity with the other test is that it is done when the baby is asleep and is also pain free.

Similar test is carried out on an infants but they are examined using an additional test, which is known as behavioral audiometry. The behavior of child is put under keen observation, to see how they react after certain sounds that are made. The ear professional may decide to carry out more test if need arises.

Moving to toddler stage, two kinds of tests are used here too. To start with, there is visual reinforcement audiometry or VRA. This test involves a child being trained to look at a source of sound and their response is observed. If they respond as expected, then they are rewarded with visual objects like a moving toy flash light. This test is meant for children in the age bracket between 6 months to 2 years.

The second test used on toddler is known as play audiometry. This involves the use of electrical machine to relay sound at different pitches and volumes into the child ears. This test can be done in form of a game based on the child age group. In this test, a child is asked to operate a moving toy in reaction to the sound they hears. The bad thing with this test is the cooperation of the child which in most cases is not guaranteed.

For ages three and four the examination conducted on them is known as tympaomentry test also known as impendance audiometry. The test examines how the middle part of the year is functioning. It does not show hearing loss on the child but it detects changes in pressure. The child is expected to stay still without talking, moving, or crying.

Pure Tone audiometry is a test used for hearing evaluation in children. An electric machine is used in this method to generate sounds with varied pitches and volumes. This sound is directed to the child ears through earphone and asked to react with his hand ear in response to what he hears.




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