Development of a hearing test protocol for profoundly involved multi-handicapped children

Area of Science:

• Audiology
• Pediatric audiology
• Special education

Background:

• Assessing hearing in profoundly multi-handicapped children presents unique challenges.
• Standard audiological tests may not be suitable for this population.
• Accurate hearing assessment is vital for development and intervention.

Purpose of the Study:

• To develop and evaluate a hearing testing protocol for profoundly multi-handicapped children.
• To determine the efficacy of different audiological tests in this population.
• To establish a reliable method for identifying hearing impairments.

Main Methods:

• Administered behavioral observation audiometry, visual reinforcement audiometry, auditory brain stem response (ABR), and noise-tone-difference tests.
• Studied 156 multi-handicapped children.
• Utilized factor analysis to explore test associations with medical/physical conditions.

Main Results:

• 83% of children with normal middle ear function showed normal or mild hearing loss.
• Auditory brain stem response (ABR) was the most effective single test (65% pass rate).
• A series-positive test battery protocol is supported for ruling out moderate-profound sensorineural hearing loss.

Conclusions:

• A sequential, multi-test battery approach is recommended for accurate hearing assessment in multi-handicapped children.
• Individual test performance varies and is influenced by co-occurring conditions.
• The developed protocol aids in identifying hearing loss, crucial for intervention planning.