Paediatric auditory brainstem response and pure-tone audiometry: threshold comparisons. A study of 142 difficult-to-test children.
Auditory brainstem response (ABR) thresholds have been determined in 142 anaesthetized 'difficult-to-test' children. The stimuli employed were 2-kHz tone bursts. Pneumatic otomicroscopy was carried out prior to the ABR assessment in all cases, and diagnostic myringotomy was performed when there was the slightest suspicion of abnormality. Long-term follow-up pure-tone audiograms were obtained in 56 patients. A comparison was made between ABR and pure-tone thresholds in the 2-4 kHz range both in healthy middle ears and in ears having middle ear effusion (MEE) at the time of ABR measurement. A correction factor for prediction of behavioural threshold from the ABR threshold both in healthy and in MEE ears is proposed.
Fjermedal
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O
Department of Otorhinolaryngology, University of Tromsø, Norway.
Laukli
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E
D000293:Adolescent; D001299:Audiometry; D001300:Audiometry, Evoked Response; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D001933:Brain Stem / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D005072:Evoked Potentials, Auditory; D006801:Humans; D007223:Infant; D010034:Otitis Media with Effusion / Q000175:diagnosis*; D012016:Reference Values