Single monotic auditory steady-state response in children with severe to profound sensorineural hearing loss
| Autor: | Mohamed Moneer, Nagwa Hazzaa, Elham El Saiid, Dalia Mohamed Hassan |
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| Rok vydání: | 2014 |
| Předmět: |
High rate
medicine.medical_specialty Profound sensorineural hearing loss Absolute threshold of hearing business.industry Audiology medicine.disease Predictive value Audiological evaluation Auditory brainstem response otorhinolaryngologic diseases medicine Sensorineural hearing loss Evoked potential business |
| Zdroj: | The Egyptian Journal of Otolaryngology. 30:249-254 |
| ISSN: | 2090-8539 1012-5574 |
| DOI: | 10.4103/1012-5574.138486 |
| Popis: | The aim of the study was to find out the predictive value of single monotic auditory steady-state response (ASSR) in hearing threshold estimation in children with severe to profound sensorineural hearing loss (SNHL). Forty-eight children (96 ears) with severe to profound SNHL were included. They were subjected to age-based audiological evaluation. Single monotic ASSR was obtained and analyzed for all children using test signals of 250, 500, 1000, 2000, and 4000 Hz, modulated in either ears at high rates of 67, 74, 81, 88, and 95 Hz, respectively, using GSI Audera evoked potential system. The number and percentage of ASSR detected were highest at 1000, 500, and 2000 Hz, respectively in all children. The ASSR thresholds obtained were statistically correlated with the behavioral audiometric thresholds at the corresponding frequencies. A considerable number of ears with no sound field thresholds or click auditory brainstem response responses showed ASSR. Single monotic ASSR, with high modulation frequencies, has shown to be a reasonable method for estimating hearing sensitivity in the mid-conventional audiometric frequencies in children with severe to profound SNHL. |
| Databáze: | OpenAIRE |
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