Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2009
[The diagnosis of auditory neuropathy in young children].
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Mo Lingyan, Yan Fei, Liu Hui, Chen Jing, Zhang Fan
Аннотация
OBJECTIVE: To present the clinical data of a group of children with audiological profile of auditory neuropathy.
METHOD: Forty-eight infants and young children who had severely abnormal click ABRs along with present CMs and/or DPOAEs were included in this retrospective study. Click ABRs, CMs, DPOAEs, tympanograms, behavioral thresholds and inner ear MRI were analysed.
RESULT: Fourty children present with bilateral audiological profile of AN, 8 were unilateral. Most of the ears (68.2%) were of absent click ABRs at the maximum presentation level of 100 dB nHL. However, some of them had repeatable Wave V at very high presentation levels. All ears showed present CMs while only 41.7% showed preserved DPOAEs. Four children were diagnosed as CND by further investigation of inner ear MRI.
CONCLUSION: It is recommended that CM testing be carried out routinely in children with severely abnormal click ABRs so as not to miss out AN; Behavioral hearing can not be predicted by auditory evoked responses; if audiological profile of AN is detected, further MRI exploration of well-developed cochlear nerve is necessary.
METHOD: Forty-eight infants and young children who had severely abnormal click ABRs along with present CMs and/or DPOAEs were included in this retrospective study. Click ABRs, CMs, DPOAEs, tympanograms, behavioral thresholds and inner ear MRI were analysed.
RESULT: Fourty children present with bilateral audiological profile of AN, 8 were unilateral. Most of the ears (68.2%) were of absent click ABRs at the maximum presentation level of 100 dB nHL. However, some of them had repeatable Wave V at very high presentation levels. All ears showed present CMs while only 41.7% showed preserved DPOAEs. Four children were diagnosed as CND by further investigation of inner ear MRI.
CONCLUSION: It is recommended that CM testing be carried out routinely in children with severely abnormal click ABRs so as not to miss out AN; Behavioral hearing can not be predicted by auditory evoked responses; if audiological profile of AN is detected, further MRI exploration of well-developed cochlear nerve is necessary.