Auditory screening in high-risk pre-term and full-term neonates using transient evoked otoacoustic emissions and brainstem auditory evoked potentials.
The present report concerns a 3 year, 8 month hearing screening in 1531 high-risk neonates by means of two successive transient evoked otoacoustic emission (TEOAE) recordings followed, in cases of suspected hearing loss, by brainstem auditory evoked potential (BAEP) recording and otolaryngology (ORL) consultation. After TEOAE 1 and 2 and BAEP testing, 1361 infants (88.9%) were declared normal, and 170 (11.1%) suspected of hearing loss. Of these 170, 58 showed bilateral and 26 unilateral impairment. Definite hearing loss on ORL consultation was diagnosed in 14 infants (0.9% of the screened population as a whole); 22 are still being followed, while 86 (5.6%) failed to consult for diagnosis. The mean age on diagnosis of definite hearing loss was 9.9 +/- 4.9 (range 4-20) months. Several auditory function risk factors proved more frequent in deaf than in normal children. Our results show that early hearing loss screening in at-risk neonates needs to be pursued.
Morlet
T
T
Service d'Exploration Fonctionnelle Neurosensorielle, Centre Hospitalier Lyon-Sud, Pierre-Bénite, France.
Ferber-Viart
C
C
Putet
G
G
Sevin
F
F
Duclaux
R
R
D001309:Auditory Threshold / Q000502:physiology; D003937:Diagnosis, Differential; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology; D005260:Female; D007839:Functional Laterality; D006311:Hearing Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000517:prevention & control; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D008403:Mass Screening / Q000379:methods*; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology; D012016:Reference Values; D012307:Risk Factors; D012680:Sensitivity and Specificity