The Results of ABR in a Child with Noonan Syndrome: Necessity of Renewing 
the Evaluation Protocols of Syndromes

Jalaei, Bahram; Normani Zakaria, Mohamad

doi:10.30699/fdisj.01.1.68

Volume 1, Issue 1 (Winter 2018) Func Disabil J 2018, 1(1): 68-73 | Back to browse issues page

‎ 10.30699/fdisj.01.1.68

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Jalaei B, Normani Zakaria M. The Results of ABR in a Child with Noonan Syndrome: Necessity of Renewing the Evaluation Protocols of Syndromes. Func Disabil J 2018; 1 (1) :68-73
URL: http://fdj.iums.ac.ir/article-1-31-en.html

The Results of ABR in a Child with Noonan Syndrome: Necessity of Renewing the Evaluation Protocols of Syndromes

Bahram Jalaei ^*

¹, Mohamad Normani Zakaria²

1- Audiology Group, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
2- Audiology Program, School of Health Sciences, University of Sains, Kelantan, Malaysia

Abstract: (2506 Views)

55 years after discovering NS, there was not even one publication regarding the use of auditory electrophysiological tests for analyzing the central auditory nervous system in NS patients. This is an attempt to attract attention of scientists and clinicians in using AEPs for evaluating the function of CANS in NS. Readers can find a report about the results of audiological tests and auditory brainstem response (ABR) findings in a 5-year old Malay boy with NS. It should be noted that he could only produce a few meaningful words. The results of audiological tests showed bilateral mild conductive hearing loss at low frequencies. ABR recordings showed good waveform morphology but the results were atypical. That is, absolute latency of wave V was normal but interpeak latencies of waves I-V, I-II, II-III were prolonged. Conversely, interpeak latency of waves III-V was abnormally shorter.
Abnormal ABR results are possibly due to an abnormal anatomical condition or abnormal function of brainstem and might cause speech delay.

Keywords: Auditory brainstem response (ABR), Hearing loss, Speech delay, Noonan Syndrome

Full-Text [PDF 397 kb] (1835 Downloads)

Type of Study: Case Report | Subject: Audiology
Received: 2017/03/28 | Accepted: 2017/06/5 | Published: 2017/10/29

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