Question
How long after birth do newborns start to have hearing? If a newborn’s hearing re-screening at 45 days old does not pass, does it mean there is a hearing loss?
Answer
Newborn hearing screening is typically conducted within 48 hours after birth, using objective, rapid, and non-invasive electrophysiological techniques such as otoacoustic emissions, automated auditory brainstem response, and acoustic impedance. Infants who do not pass the initial screening will receive a hearing re-screening within 42 days. If the re-screening still does not pass, a diagnostic hearing test should be conducted around three months of age. If confirmed as hearing impairment, timely consultation with experts for appropriate medical and supportive interventions is essential. For cases where the hearing re-screening does not pass, parents should remain patient and follow the doctor’s guidance for subsequent examinations and treatments.