What is newborn hearing screening

Which test should OAE (otoacoustic emission) and ABR (brainstem evoked potential) be selected?

Both methods have their own advantages and disadvantages, which depend on the arrangement of the whole screening plan and the experience of the tester. The operation of otoacoustic emission is simpler and the cost is relatively lower, but the false-positive rate (i.e. the newborn hearing is normal but otoacoustic emission is not extracted) is higher than brainstem evoked potential. The principles of the two methods are different. If further hearing test and assessment are needed, it is better to use them together and complement each other.

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Common reasons for failure of primary screening

Failure to pass the primary screening does not mean permanent hearing loss or total deafness. There are many factors that lead to failure to pass the screening:

1. Amniotic fluid remains in the ear canal of the newborn, hindering the introduction of stimulus sound into the ear, resulting in no response in the inner ear.

2. Middle ear effusion (common children’s middle ear infection) can also block the sound transmission and lead to the failure of screening.

3. There is environmental noise or the newborn is moving during the examination. The recorded brainstem evoked potential and otoacoustic emission signals are very weak, and the newborn’s slight movements or crying can hinder the detector tube from receiving the signals. Therefore, it is very important to keep the newborn quiet during the examination. Usually, they can eat before the examination. Although these two methods are painless examinations, they are an additional stimulus for the newborn, so they are still There will be short-term upset.

So the interval between the first and second screening should be at least one week, so that the external ear of the newborn has time to “dry”.

If the newborn fails the screening in the hospital, what should be done next?

The vast majority of hospitals will recommend the first screening of failed newborns to a more professional hearing test center for systematic examination and diagnosis. Sometimes, some simple problems such as amniotic fluid blockage can be solved before the second screening. The second screening is very important. You can judge whether the < a href = "http://www.sqhearing.com/tlkp/1105.html" target = "_blank" > newborn < / a > can hear the voice, so you can’t do it carelessly.

If the second screening still fails, it is necessary to do diagnostic hearing test, which can be done at the place of the second screening, or go to other testing centers.

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