The accuracy of 42-day hearing screening

Hearing screening is a relatively common examination method. It is an examination of the hearing of newborns. It is mainly performed through otoacoustic emissions and some electrophysiological detection methods of acoustic impedance. It is an examination performed when the child is in natural sleep. Through such an examination, it can be found whether the newborn has hearing loss. The detection rate of this hearing screening is relatively high.

The accuracy of 42-day hearing screening

Hearing screening may have false negatives or false positives. Babies who fail the test must undergo further examination to determine whether hearing loss actually exists and the extent and nature of the hearing loss. The best test results are obtained when your baby is sleeping naturally. If your baby is fussy, crying, or has a stuffy nose, it can affect the test results. Therefore, it is best to test your baby about half an hour after he or she has eaten. If necessary, parents can touch the baby's head and try to calm him down. The night before the diagnostic audiology examination and on the way to the doctor's office, try to keep your baby as sleepy as possible, because your baby needs to sleep quietly during the hearing test. Although the doctor usually uses some sleeping pills before the examination, if your baby sleeps too much before, he may not be able to fall asleep even with the pills, making the waiting time too long or the examination impossible to complete. Once hearing impairment is confirmed, intervention should be made as soon as possible to improve his language skills.

Newborn hearing screening time

1. Initial screening process (primary screening): hearing screening of newborns during hospitalization 3-5 days after birth. 2. The second screening process (rescreening): Infants within 42 days of birth fail the initial screening; or the initial screening is "suspicious"; or even if the initial screening has "passed" but the baby is at high risk of hearing loss, such as children in the intensive care unit, a hearing rescreening is required.

Newborn hearing screening targets

There are two main types of newborn hearing screening subjects: one is all normal newborns; the other is newborns with high risk factors for hearing impairment. High risk factors for hearing impairment 1. Those who have been in the neonatal intensive care unit for 48 hours or more; 2. Premature birth (less than 26 weeks), or birth weight less than 1500 grams; 3. Hyperbilirubinemia;4. Those with symptoms or signs of syndromes related to sensorineural and/or conductive hearing loss; 5. Those with a family history of permanent sensorineural hearing loss in childhood; 6. Craniofacial deformities, including microtia, external auditory canal deformity, cleft palate, etc.; 7. Maternal intrauterine infection, such as cytomegalovirus, herpes, toxoplasmosis, etc. 8. The mother has used ototoxic drugs during pregnancy; 9. History of hypoxia and asphyxia at birth, Apgar score 0-4 points/1min or 0-6 points/5min; 10. Mechanical ventilation for more than 5 days; 11. Bacterial meningitis.