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Identifying congenital hearing impairment: preliminary results from a comparative study using objective and
A Ciorba1, S Hatzopoulos, J Petruccelli
1ENT and Audiology Department, University of Ferrara, Italy.
Summary
This study compared hearing assessment methods in young children. Auditory Steady State Responses (ASSR) showed better correlation with Auditory Brainstem Responses (ABR) for frequency-specific hearing loss detection than Conditioned Orientation Reflex (COR) responses.
Area of Science:
- Audiology
- Pediatric Medicine
- Neuroscience
Background:
- Early identification of hearing loss in young children is crucial for development.
- Objective and subjective hearing assessment protocols vary in accuracy and applicability.
- Frequency-specific hearing impairment assessment is vital for targeted intervention.
Purpose of the Study:
- To compare objective and subjective protocols for assessing hearing loss in young children.
- To evaluate frequency-specific hearing impairment using Auditory Steady State Responses (ASSR), Auditory Brainstem Responses (ABR), transient otoacoustic emissions, and Conditioned Orientation Reflex (COR) responses.
Main Methods:
- Thirty-five hearing-impaired children (14 months to 4 years) participated.
- Hearing threshold levels and peripheral auditory function were assessed using ABR, ASSR, otoacoustic emissions, and COR.
- Correlation analyses were performed between the different assessment methods.
Main Results:
- Significant correlations were found between COR and ASSR at most tested frequencies.
- COR tended to underestimate hearing thresholds compared to ASSR.
- ASSR demonstrated a stronger correlation with ABR than COR.
Conclusions:
- While COR follows the pattern of ABR and ASSR, it may underestimate hearing thresholds.
- ASSR shows a better relationship with ABR, suggesting its utility for frequency-specific hearing information.
- ASSR may be advantageous for obtaining precise, frequency-specific hearing data in young children.
