There are several ways to screen newborns for hearing

At present, there are basically two authoritative methods, one is otoacoustic emission technology, and the other is auditory brainstem-evoked localization technology.

Newborn hearing screening includes otoacoustic emission (OAE) and automatic auditory brainstem response (AABR).

During the otoacoustic emission (OAE) test, the health care provider will put a small soft-tipped earphone into the outside of your baby's ear, the earbuds will click along the ear, and when the inside of the ear receives the sound, it usually emits an echo, and then the instrument will pick up the echo and show "pass". Otoacoustic emission (OAE) technology has the characteristics of simplicity, sensitivity and objectivity, and has been routinely used in neonatal hearing screening, but otoacoustic emission (OAE) can only reflect the functional status of the cochlea, not the postcochlear lesions.

Automatic Auditory Brainstem Response (AABR) is a detection method based on the auditory brainstem response test technology, through a new algorithm and special test headphones, which has the advantages of rapid, reliable and non-invasive. During the examination, three small sensors will be placed on the baby's head, and then the headphones will be placed on the baby's ears, ** a series of clicks, and a computer can measure the baby's response to sounds. Because middle ear exudation and external auditory canal debris have less impact on AABR, AABR can objectively reflect the functional status of the cochlea and can also reflect the postcochlear lesions.

The newborn hearing screening phase includes a primary hearing screening and a second screening.

1.Primary screening. 1) Initial screening during hospitalization, newborns with dusty tomatoes receive general hearing screening during hospitalization after birth; The primary screening included two groups, one was normal newborns who were roommate-in-room, and hearing screening was performed 2 7 days after birth; The second is the neonatal intensive care unit.

of pathological neonates are screened for hearing before they are discharged from the hospital in stable condition.

2) Initial screening during the non-hospitalization period, newborns receive general hearing screening during the non-hospitalization period after birth, which refers to newborns who are not screened during home delivery, hospitalization or other medical service units to breastfeed at home after delivery, and go to the outpatient clinic for hearing screening during the neonatal period (within 1 month after birth).

2.Re-sifting. Those who "failed" in the initial screening, or "suspicious" in the preliminary screening, will undergo hearing re-screening within 42 days; In addition, even if it is a preliminary screening.

Newborns and infants with high-risk factors for hearing impairment should inform their parents to have their children receive regular audiological monitoring so that late onset or progressive hearing impairment can be detected in a timely manner.

The procedure includes: cleaning the external auditory canal; The child is in a quiet state; In strict accordance with the technical operation requirements, the screening otoacoustic emission instrument or automatic auditory brainstem reactor is used to carry out this test.

Hearing screening for newborns is currently done 48-72 hours after the birth of the bright liquid, and the Changmo is also known as OAE examination. It is detected by the active movement and spontaneous power generation of the outer hair cells of the cochlea in the inner ear. If the child has normal hearing, audio energy can be recorded at the opening of the external auditory canal, which is the passage of the hearing screening stimulant.

If the hearing screening fails, a hearing re-examination is required at 42 days of age when other external factors are excluded, and the test items are the same as those of the initial screening OAE; and AABR testing, which is an automated auditory brainstem evoked potential test.