Newborn Hearing Screening And Auditory Neuropathy In Infants

Objective:? To analyze the related factors in new born failed in hearing screening and audiological characteristics in infants with auditory neuropathyMethods: From May 2009 to Febrary 2010, 952 infants(1882 ears) with detailed birth records and hearing screening records were reviewed in the study. They were born in Guangzhou and surrounding areas, but failed in the first and second hearing screening or with the different results between the first and second screening, few have passed hearing screening , but to 4 or 5 months of age, the parents found that children with poor response to sound. They were tested by auditory brainstem(ABR),distortion product otoacoustic emissions(DPOAE), tympanometry and stapedius reflex within the 6-month-old infants.Rseult: The pass proportion of hearing screening in group without high risk factors is higher than group with high risk factors (P <0.05 or P <0.01). hearing loss in no high risk group is less than the high-risk group (P <0.05); There is significant differences ABR response threshold between the group that premature birth, low birth weight, neonatal asphyxia, palace the virus infection, mechanical ventilation≥5 days,≥2 high-risk factors and the group without high risk (P <0.05 or P <0.01); Multivariate logistic regression analysis found that premature birth, very low birth weight, family history of deafness, facial deformity, mechanical ventilation≥5 days are risk factors for hearing loss. Eleven cases were diagnosed as auditory neuropathy because of the Conclusion: Newborn hearing screening is a long and arduous task, We should enhance screening efforts in infant with high risk factors, and actively prevent and treat neonatal perinatal risk factors and reduce the incidence of hearing loss. Hearing characteristics of auditory neuropathy in infants is serious inconsistency between normal otoacoustic emissions and the auditory brainstem response threshold, and no stapes reflex .This can be used in early diagnosis of auditory neuropathy in infants and young children.