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ORIGINAL ARTICLE
Year : 2014  |  Volume : 20  |  Issue : 4  |  Page : 199-202

Evaluation of auditory brain-stem evoked response in middle: Aged type 2 diabetes mellitus with normal hearing subjects


Department of ENT, Audiology and Speech Language Pathology Unit, Pt. J. N. M. Medical College, Ayush Health Science University, Raipur, Chhattisgarh, India

Correspondence Address:
Debadatta Mahallik
Department of ENT, Audiology and Speech Language Pathology Unit, Pt. J. N. M. Medical College, Ayush Health Science University, Raipur 492 001, Chhattisgarh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-7749.146939

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Background: Diabetes mellitus (DM) is commonly metabolic disorders of carbohydrate in which blood glucose levels are abnormally high due to relative or absolute insulin deficiency. In addition, it is characterized by abnormal metabolism of fat, protein resulting from insulin deficit or insulin action, or both. There are two broad categories of DM are designated as type 1 and type 2. Type 2 diabetes is due to predominantly insulin resistance with relative insulin deficiency noninsulin-dependent DM. Type 2 diabetes is much more common than insulin-dependent DM. Objectives: The aim of this study was to assess, if there is any abnormality in neural conduction in auditory brain-stem pathway in type 2 DM patients having normal hearing sensitivity when compared to age-matched healthy populations. Materials and Methods: This study included middle - aged 25 subjects having normal hearing with diabetes type 2 mellitus. All were submitted to the full audiological history taking, otological examination, basic audiological evaluation and auditory brain-stem response audiometry which was recorded in both ears, followed by calculation of the absolute latencies of wave I, III and V, as well as interpeak latencies I-III, III-V, I-V. Results: Type 2 DM patients showed significant prolonged absolute latencies of I, III (P = 0.001) and interpeak latencies I-III, III-V and I-V in left ear (P = 0.001) and absolute latencies of I, V (P = 0.001), interpeak latencies III-V was statistically significant in right ear. Conclusions: The prolonged absolute latencies and interpeak latencies suggests abnormal neural firing synchronization or in the transmission in the auditory pathways in normal hearing type 2 diabetes mellitus patients.


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