According to international standards and recommendations, infants should have a preliminary hearing screening within a few days after birth. This is usually done by measuring the baby's response to sound, such as observing whether they turn their heads or blink their eyes to find the source of sound.
However, early initial screening may fail to detect some potential hearing problems. Therefore, it is recommended to conduct a more comprehensive hearing screening within 3 months after the baby is born. Screening at this stage usually includes playing specific sound stimuli with headphones and observing the baby's reaction, such as turning his head to the sound source or staring at the sound source.
If the initial screening results are abnormal or there are other risk factors, such as hearing problems of family members, doctors may suggest further hearing assessment, such as auditory evoked potential test (ABR) or otobrainstem response test (BERA). These tests can provide more detailed hearing information to determine whether there is hearing impairment.
In short, the hearing screening of babies should be carried out within a few days after birth, and then a more comprehensive screening should be carried out within three months. If you have any concerns or questions, it is recommended to consult your pediatrician or audiologist, who will be able to provide you with more specific advice and guidance.