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  • Title: Newborn hearing screening methodology impacts the timing of diagnosis for auditory neuropathy spectrum disorder.
    Author: Bennett C, Yoon P, Lee MY, Wolfe M, Anne S, Carvalho DS.
    Journal: Am J Otolaryngol; 2023; 44(4):103920. PubMed ID: 37207575.
    Abstract:
    INTRODUCTION: Auditory Neuropathy Spectrum Disorder (ANSD) accounts for 10 % to 15 % of pediatric hearing loss. In most cases, otoacoustic emissions (OAE) are present as the outer hair cell function is normal, and the auditory brainstem response (ABR) is abnormal. Newborn hearing screen (NBHS) is completed using OAE or ABR depending on the institution. Because OAEs are often present in ANSD, NBHS done solely with OAE can miss and delay diagnosis of patients with ANSD. OBJECTIVES: To assess whether NBHS methodology impacts the age of diagnosis of ANSD. METHODS: This is a retrospective study of patients, 0-18 years of age, diagnosed with ANSD at two tertiary pediatric hospitals from 1/01/2010 to 12/31/2018 after referral from NBHS performed in the community. Data recorded included patient demographics, method of NBHS, NICU stay, and age at ANSD diagnosis. RESULTS: 264 patients were diagnosed with ANSD. Of those, 123 (46.6 %) were female, and 141 (53.4 %) were male. Ninety-seven (36.8 %) were admitted to NICU and the mean stay was 6.98 weeks (STD = 10.7; CI = 4.8-9.1). The majority (244, 92.4 %) of patients had NBHS with ABR, and 20 (7.5 %) had NBHS with OAE. Patients screened with ABR were diagnosed with ANSD earlier than those who screened with OAE, with a mean age of 14.1 versus 27.3 weeks (p = 0.0397, CI = 15.2-39.3). Among those screened with ABR, median age at diagnosis was 4 months for NICU infants and 2.5 months for infants with no history of NICU stay over 5 days. In comparison, median diagnosis age was 8 months for non-NICU infants screened with OAEs. CONCLUSION: Patients with ANSD who had NBHS with ABR were diagnosed earlier than those with OAE. Our data suggest that universal screening with ABR may facilitate earlier diagnosis of ANSD and earlier evaluation for aural rehabilitation, especially in high-risk cohorts such as NICU patients. Further research is needed into factors that contribute to earlier diagnosis among patients screened with ABR.
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