Talk:Hearing test
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Cite this page: Hill, M.A. (2026, October 5) Embryology Hearing test. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Talk:Hearing_test |
2011
Incidence and Pattern of Hearing Impairment in Children with ≤ 800 Gram Birth Weight in British Columbia, Canada
Acta Paediatr. 2011 Aug 8. doi: 10.1111/j.1651-2227.2011.02437.x. [Epub ahead of print]
Synnes AR, Anson S, Baum J, Usher L. Source Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada Child and Family Research Institute, Vancouver, BC, Canada Neonatal Follow-Up Program, Children's & Women's Health Centre of British Columbia, Vancouver, BC, Canada Audiology and Speech Sciences, University of British Columbia, Vancouver, BC, Canada.
Abstract
Aim: Evaluate changes over time in the characteristics of permanent hearing impairment (HI) in extremely low birth weight (ELBW < 800 grams) children. Methods: Data from sequential visits up to 5 years of age assessing hearing and other neurodevelopmental outcomes was extracted from a cohort of ELBW subjects born 1983-2006 at a single Canadian site. Trends in HI incidence, severity, and association with other impairments were analyzed in three 8 year epochs. Results: Fifty of 586 ELBW children had a HI. HI rates increased from 5% in epoch 1 to 7% in epoch 2 to 13% in epoch 3 (p= 0.01). Mild HI decreased from 78% in epoch 1 to 35% in epoch 3 (p =0.03). Median age at diagnosis decreased from 13 to 8 months. Comorbidities were more common in HI children than non HI children: cerebral palsy (40% vs 14%, p <0.0001)), cognitive (38% vs 12%, p <0.0001) and visual impairments (16% vs 6%, p=0.009). Conclusion: The incidence and severity of hearing impairment in a cohort of extremely low birth weight children increased significantly from 5% to 13% (p= 0.01) over a 24 year period. Comorbidities were common. Potentially modifiable causes are explored.
Acta Paediatrica © 2011 Foundation Acta Paediatrica.
PMID:= 21824192
The use of transient evoked otoacoustic emissions as a hearing screen following grommet insertion
J Laryngol Otol. 2011 Jul;125(7):692-5. Epub 2011 Apr 27.
Dale OT, McCann LJ, Thio D, Wells SC, Drysdale AJ. Source ENT Department, Musgrove Park Hospital, Taunton, UK. otdale@doctors.net.uk
Abstract OBJECTIVE: This study aimed to evaluate the sensitivity of transient evoked otoacoustic emission testing as a screening tool for hearing loss in children, after grommet insertion.
METHOD: A prospective study was conducted of 48 children (91 ears) aged three to 16 years who had undergone grommet insertion for glue ear. At post-operative review, pure tone audiometry was performed followed by transient evoked otoacoustic emission testing. Outcomes for both tests, in each ear, were compared.
RESULTS: The pure tone audiometry threshold was ≤ 20 dB in 85 ears (93.4 per cent), 25 dB in two ears (2.2 per cent) and ≥ 30 dB in four ears (4.4 per cent). Transient evoked otoacoustic emissions were detected in 69 ears (75.8 per cent). The sensitivity of transient evoked otoacoustic emission testing for detecting hearing loss was 100 per cent for ≥ 30 dB loss but only 66.7 per cent for ≥ 25 dB loss.
CONCLUSION: Transient evoked otoacoustic emission testing offers a sensitive means of detecting hearing loss of ≥ 30 dB following grommet insertion in children. However, the use of such testing as a screening tool may miss some cases of mild hearing loss.
PMID 21524331
