External and middle ear effects on infant hearing screening test results.
Otolaryngol Head Neck Surg
; 122(4): 477-81, 2000 Apr.
Article
em En
| MEDLINE
| ID: mdl-10740164
ABSTRACT
This study investigated the relationship between external and middle ear factors and hearing screening results by automated auditory brain stem response (ABR) and transient-evoked otoacoustic emissions (EOAEs). The ears of 200 healthy newborns aged 5 to 48 hours underwent screening by ABR and EOAE, followed by otoscopic examination. The pass rates for ABR and EOAE were 91% and 58.5%, respectively. On otoscopic examination, 28% (112/400) ears had occluding vernix obscuring the view of the tympanic membrane. Cleaning of vernix was successfully performed in all but 2 ears that had occluding vernix. Cleaning of vernix significantly increased the pass rates of all 400 ears for ABR and EOAE to 96% and 69%. Decreased tympanic membrane mobility was found in 22.7% (90/396) of ears that were evaluated otoscopically. Decreased tympanic membrane mobility had a significant effect on EOAE screening; only 33.4% of ears passed EOAE testing. Decreased tympanic membrane mobility did not significantly affect pass rates for ABR screening; 95% of these ears passed the automated ABR screen. Implications for newborn hearing screening are discussed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Otite Média com Derrame
/
Cerume
/
Potenciais Evocados Auditivos do Tronco Encefálico
/
Triagem Neonatal
/
Emissões Otoacústicas Espontâneas
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Humans
/
Newborn
Idioma:
En
Revista:
Otolaryngol Head Neck Surg
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Estados Unidos