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Avoidable late diagnosis of significant sensorineural hearing loss: implications for practice
A E O'Hare1, D Green, J Grigor
1Community Child Health, Edinburgh.
Insights
Early infant hearing screening shows limitations. Introducing high-risk neonatal screening could significantly improve early detection of hearing loss in children, surpassing current health visitor screen improvements.
Area of Science:
- Pediatric Audiology
- Public Health Screening
- Neonatal Care
Background:
- Infant hearing screening is crucial for early detection of hearing loss.
- Current health visitor distraction screening has limitations in identifying all cases.
- Late diagnosis of hearing loss can impact child development.
Purpose of the Study:
- To evaluate the effectiveness of infant distraction screening.
- To determine the reasons for late diagnosis of hearing loss.
- To compare the potential impact of neonatal screening versus improved infant screening.
Main Methods:
- Retrospective review of audiology service records for a five-year birth cohort.
- Analysis of screening sensitivities, specificities, and predictive values.
- Assessment of late diagnosis cases in a multidisciplinary clinic.
Main Results:
- Infant distraction screening has limitations in detecting significant sensorineural and conductive hearing loss.
- High-risk neonatal screening could potentially identify 67.5% of cases by an appropriate age.
- Improving the health visitor screen could increase identification by 45% for severe losses.
Conclusions:
- High-risk neonatal screening offers greater potential for early hearing loss detection than enhancing current infant screening methods.
- Systemic improvements in screening protocols are needed to reduce late diagnoses.
- Early identification of hearing loss is critical for timely intervention and management.
Abstract:
The records for all children from a five-year birth cohort in the geographically defined area of Lothian who were referred by their health visitor to a centralized second tier audiology service after they failed their 7-9 month infant distraction hearing screen were reviewed. The sensitivities, specificities, positive predictive values and yield of this screen for the detection of significant sensorineural hearing loss > or =40 dBA requiring aiding and for a conductive loss persisting beyond one month over 30 dBA were determined. In addition, the records were studied for the same five-year birth cohort for children presenting to the centralized multidisciplinary third tier clinic with a significant sensorineural hearing loss requiring aiding, and the reasons for late diagnosis were determined. If high risk neonatal screening had been available for this population then potentially 67.5% (27 out of 40) of cases could have been identified by an appropriate age. Elimination of health visitor distraction screen false negatives for cases with loses over 60 dBA would potentially increase the case identification by the appropriate age to 45% (1 8 out of 40). Thus, there is greater scope for improving our present results with the introduction of high risk neonatal screening than by improvements in the health visitor screen.