The Prevalence and Causes of Auditory Neuropathy/Dys-synchrony (AN/AD) in Children with Hearing Impairment
Nasrin Gohari, Seyede Farank Emami, Sedigheh Sadat Mirbagheri, Akram Valizadeh, Nastaran Abdollahi, Mahta Borzuei, Nasrin Gohari, Seyede Farank Emami, Sedigheh Sadat Mirbagheri, Akram Valizadeh, Nastaran Abdollahi, Mahta Borzuei
Abstract
There are a wide variety of hearing impairments that part of it is auditory neuropathy/dys-synchrony (AN/AD). So, the object of this study was determination the prevalence and causes of AN/AD in children with hearing impairment. This study was a descriptive cross-sectional survey. The sample size consisted of 105 hearing impairment children. All them were under hearing screening tests (tympanometry), distortion and transient evoked otoacoustic emissions (DPOAEs + TEOAE) and automated auditory brainstem response (AABR). If they were suspected to AN/AD, for complete diagnostic measurements were referred to our hospital. Four cases (8 ears) with AN/AD were diagnosed, which had an average age 37 months (SD = 8.67). So, the prevalence of AN/AD was 3.8 % among hearing impaired children. The findings of this study showed that there are the relationships between AN/AD and fluctuating hearing loss, acoustic reflex, high bilirubin, blood exchange after birth, neonatal intensive (NICU) care unit (P < 0.05). The simultaneous use of both ABR and OAE tests in the birth screening provide much more useful information than when each of these tests is used alone.
Keywords: Auditory brainstem responses; Auditory neuropathy; Distortion product otoacoustic emissions; Transient evoked otoacoustic emissions.
Conflict of interest statement
Compliance with ethical standardsAuthors declare that they have no conflict of interest.
Source: PubMed