[Correlation of auditory brainstem evoked potentials and pure tone audiometric thresholds].
This work is on relation existing between the objective threshold of auditory brainstem responses in adults and those existing in the different frequencies of audiometry pure-tone, in order to make the audiometry from the objective threshold of the ABR, from the subjective threshold to the click, and the type of hearing loss in question. Such results can be transferred to children, and starting from the ABR in children we could guess their probable audiometric profiles. On that purpose we have studied the auditory brainstem responses and the pure-tone audiometry in 168 ears suffering from hearing-loss, both conductive and sensory neurals with and without recruitment, with different degrees of hearing losses and audiometric profiles. The results have confirmed the relation existing between the threshold of evoked brainstem responses and those of high frequencies, 2,000, 4,000 and 8,000 herzs. We have also proved that the threshold ABR has a predicting value on the audiometry of patients, and that the difference between the objective threshold ABR and the subjective one represents the inclination degree of the pure tone audiometry, which considerably reduces the great variability presented by the prediction of thresholds of low tones starting from ABR.
Martínez Ibarguen
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Cátedra de Otorrinolaringología de la UPV, Hospital de Basurto, Bilbao.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D002648:Child; D016057:Evoked Potentials, Auditory, Brain Stem; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests
Correlación umbral potenciales evocados auditivos troncoencefálicos (ABR), umbrales audiometría tonal liminar.