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Aetiological diagnosis in hearing-impaired children--clinical value and application of a modern examination programme
Insights
Identifying the causes of childhood hearing loss requires extensive interdisciplinary medical collaboration. Establishing specialized assessment centers can improve diagnostic accuracy and aid in developing preventative strategies for hearing impairment.
Area of Science:
- Pediatrics
- Audiology
- Genetics
Background:
- Childhood hearing loss affects development and requires accurate etiological diagnosis.
- Previous diagnostic programs have limitations in identifying the causes of hearing impairment.
Purpose of the Study:
- To investigate the clinical value of a comprehensive examination program for identifying the etiology of permanent childhood hearing loss.
- To assess the effectiveness of audiological and non-audiological tests in diagnosing hearing impairment of unknown origin.
Main Methods:
- A cohort of 32 children (born 1970-1980) with permanent hearing loss (≥35 dB HL) and unknown etiology underwent audiological and non-audiological assessments.
- Data were analyzed to determine the etiological/nosological classification rate.
- Results were compared with a previous epidemiological investigation.
Main Results:
- The examination program achieved an etiological classification in 63% (20/32) of children.
- The etiology remained unknown in 37% (12/32) of cases.
- Combined with previous data, an 89% etiological classification rate was achieved (105/117).
Conclusions:
- Accurate etiological diagnosis of childhood hearing impairment necessitates extensive interdisciplinary collaboration.
- Practical challenges in collaboration can be addressed by establishing specialized assessment centers.
- These centers can improve diagnostic precision, facilitate information exchange, and inform preventative strategies to reduce hearing impairment prevalence.
Abstract:
The clinical value and applicability of an examination programme aimed at identification and diagnosis of hearing loss was investigated. A total of 32 children born during the period 1970-1980 with a permanent hearing loss greater than or equal to 35 dB HL was subjected to both audiological and non-audiological test procedures, included in the examination programme. The criterion for selection of the children was hearing impairment of unknown aetiology. Based on the examination procedures, an aetiological/nosological classification could be obtained in 63% (20/32) of the children, while the aetiology remained unknown in 37% (12/32). When incorporating these data in the data of a previous epidemiological investigation an aetiological classification could be established in 89% (105/117). The present investigation demonstrates that extensive interdisciplinary cooperation with physicians outside the field of audiology is necessary for the aetiological diagnosis of hearing impairment in childhood. However, extensive interdisciplinary cooperation meets with severe practical problems. These may be overcome by the establishment of assessment centres at which trained physicians can examine and discuss the individual hearing-impaired child, and in addition exchange information from their own disciplines. Thus, more precise and valid data on the aetiological factors of hearing impairment may be obtained and in addition preventative methods taken into account. In this way a reduced prevalence of hearing impairment in childhood may be achieved.