Newborn Hearing Screening

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  • Mishina Jun
    Maternal & Perinatal Center, Tokyo Women's Medical University

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  • 聴覚障害児の早期発見から療育プログラムまで　　新生児聴覚スクリーニング

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Abstract

Early identification and intervention are essential for children with congenital or neonatal hearing loss in order to minimize the developmental and academic delays associated with late identification.<BR>The prevalence of moderate to profound permanent bilateral hearing loss is reported in 1-2 among every 1000 births. Half of all children with congenital or neonatal hearing impairment have risk factors, but the other half have no risk factors at all. To identify hearing-impaired infants among these risk-free infants early, universal newborn hearing screening (UNHS) is essential.<BR>Recently neonatal hearing screening is performed using automated ABR, TEOAE or DPOAE. These tests automatically detect the presence or absence of responses within ten minutes without sedation at bedside.<BR>Since November 1998, we have performed a multi-center study of hearing screening using AABR (Natus ALGO-2) for 852 high-risk infants and 18, 157 well babies. Among the well babies, the bilateral refer rate was 0.2% and 9 (0.05%) infants were identified as having bilateral hearing loss. With the high-risk infants, the bilateral refer rate was 3.9% and 18 (2.1%) cases of bilateral hearing loss were confirmed.<BR>A pilot study of neonatal hearing screening sponsored by both the national and prefectural governments started in 2001, and is now going on in 12 prefectures.

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