Abstract
Objective To investigate and analyze the rate and reasons of false positive by newborn hearing screening. Methods Transient evoked otoacoustic emission(TEOAE) and automated auditory brainstem response(AABR) were used to examine the hearing of 4 125 live birth newborns of our hospital's maternity department from Mar. 2003 to Dec.2005. TEOAE was used for preliminary hearing screening in 2 days-3 days after birth, and both TEOAE and AABR were used for the secondary hearing screening at 42 days after birth. Diagnostic hearing tests were used to assess the hearing of those who failed the secondary hearing screening in 3 months after birth. They were followed up for more than 1 year. Results All the 4 125 newborns were had the preliminary hearing screening. 3 886 of them were passed, the ratio was 94.21%. 239 infants failed preliminary hearing screening when they underwent the secondary screening at 42 days after birth. 219 of them were passed, 16 of cases who failed secondary screening were diagnosed with hearing loss, the morbidity of 4 125 newborns was 0.13%. The false positive rate was 5.4% and 0.1% of the preliminary screening and the whole process, respectively. Conclusion Although the false positive rate is very low, the number of false positives can not be ignored. It is important to sum up the reasons of the false positive of hearing screening and reduce its rate as possible as we can. Key words: newborn hearing screening; transient evoked otoacoustic emission(TEOAE); automated auditory brainstem response(AABR); false positive
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