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Millions of people across the world suffer from disabling hearing loss. Appropriate interventions lead to improved speech and language skills, educational advancement, and improved social integration. A major limitation to improving care is identifying those with disabling hearing loss in low-resource countries.
Objectives
This review article summarises information on currently available hearing screening platforms and technology available from published reports and the authors’ personal experiences of hearing loss identification in low-resource areas of the world. The paper reviews the scope and capabilities of portable hearing screening platforms, including the pros and cons of each technology and how they have been utilised in low-resource environments.
Conclusion
Portable hearing screening tools are readily available to assess hearing loss in low-resource areas. Each technology has advantages and limitations that should be considered when identifying the optimal methods to assess needs in each country.
The value of otoacoustic emissions as an objective screening test for normal peripheral auditory function in infants is currently the subject of extensive and promising research. Additionally the measurement of cochlear emissions is potentially useful when children cannot be tested reliably by traditional subjective methods but confirmation of normal hearing is diagnostically important. Three groups of children are described who present such audiological dilemmas: children with non-organic hearing loss, children with severe learning difficulties and more rarely children with an abnormal auditory brainstem response who also have damage to the central nervous system. In all three groups otoacoustic emission testing was found to be diagnostically useful in determining normal peripheral auditory function thereby resolving some of the dilemmas facing paediatric audiology and ENT clinics.
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