alexa Auditory impairment in patients with type 2 diabetes mellitus.

Journal of Phonetics & Audiology

Author(s): Daz de LenMorales LV, JureguiRenaud K, GaraySevilla ME, HernndezPrado J, MalacaraHernndez JM

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Abstract BACKGROUND: We assessed the auditory function of 94 patients with type 2 diabetes mellitus and 94 age- and sex-matched healthy subjects. METHODS: To study the influence of the clinical characteristics of the disease on the auditory function, after a clinical interview with ophthalmological assessment, subjects were evaluated using pure-tone audiometry, speech audiometry, auditory brainstem responses, the Michigan Diabetic Neuropathy Score and albuminuria. The mean age when diabetes was diagnosed was 42.8 +/- 6.5 years (mean +/- SD) and the time elapsed since diabetes diagnosis was 7.2 +/- 5.4 years. RESULTS: Forty-eight patients (62\%) had HbA1c >8\%; diabetic retinopathy was evident in 14 patients (14\%) and microalbuminuria was identified in 12 patients. Compared to healthy subjects, diabetic patients showed an increase of the perception threshold at 8000 Hz (p <0.01), higher hearing levels to discriminate at least 90\% of 10 monosyllables (p <0.01), and longer latencies of wave V, interwave I-V and interwave III-V (p <0.01). Significant correlation was found between the hearing threshold at 8 KHz and patient age, and the former and the time elapsed since the diabetes was diagnosed (p <0.001). CONCLUSIONS: Patients with type 2 diabetes mellitus can have subclinical hearing loss and impaired auditory brainstem response, independent of peripheral neuropathy, retinopathy or nephropathy. This article was published in Arch Med Res and referenced in Journal of Phonetics & Audiology

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