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ERIC Number: EJ1107568
Record Type: Journal
Publication Date: 2016-Jun
Pages: 7
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-1092-4388
Prevalence and Nature of Hearing Loss in 22q11.2 Deletion Syndrome
Van Eynde, Charlotte; Swillen, Ann; Lambeens, Elien; Verhaert, Nicolas; Desloovere, Christian; Luts, Heleen; Vander Poorten, Vincent; Devriendt, Koenraad; Hens, Greet
Journal of Speech, Language, and Hearing Research, v59 n3 p583-589 Jun 2016
Purpose: The purpose of this study was to clarify the prevalence, type, severity, and age-dependency of hearing loss in 22q11.2 deletion syndrome. Method: Extensive audiological measurements were conducted in 40 persons with proven 22q11.2 deletion (aged 6-36 years). Besides air and bone conduction thresholds in the frequency range between 0.125 and 8.000 kHz, high-frequency thresholds up to 16.000 kHz were determined and tympanometry, acoustic reflex (AR) measurement, and distortion product otoacoustic emission (DPOAE) testing were performed. Results: Hearing loss was identified in 59% of the tested ears and was mainly conductive in nature. In addition, a high-frequency sensorineural hearing loss with down-sloping curve was found in the majority of patients. Aberrant tympanometric results were recorded in 39% of the ears. In 85% of ears with a Type A or C tympanometric peak, ARs were absent. A DPOAE response in at least 6 frequencies was present in only 23% of the ears with a hearing threshold =30 dB HL. In patients above 14 years of age, there was a significantly lower percentage of measurable DPOAEs. Conclusion: Hearing loss in 22q11.2 deletion syndrome is highly prevalent and both conductive and high-frequency sensorineural in nature. The age-dependent absence of DPOAEs in 22q11.2 deletion syndrome suggests cochlear damage underlying the high-frequency hearing loss.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A