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Auditory and Vestibular Functioning in Individuals with Type-2 Diabetes Mellitus: A Systematic Review
Prawin Kumar1, Niraj Kumar Singh1, Kumari Apeksha2
1Department of Audiology, All India Institute of Speech and Hearing, Mysuru, Karnataka, India.
International Archives of Otorhinolaryngology
|May 23, 2022
Summary
Type-2 diabetes mellitus significantly impacts auditory function, potentially causing peripheral auditory system impairments. While vestibular system effects are less clear, overall findings suggest distinct auditory and vestibular end-organ issues in diabetic individuals.
Area of Science:
- Otorhinolaryngology
- Endocrinology
- Neurology
Background:
- Diabetes mellitus is a metabolic disorder characterized by hyperglycemia.
- Individuals with diabetes are at increased risk for hearing loss, tinnitus, and dizziness due to vascular complications.
- The specific impact of type-2 diabetes mellitus on auditory and vestibular functions requires further investigation.
Purpose of the Study:
- To systematically review existing literature on auditory and vestibular functions in individuals with type-2 diabetes mellitus.
- To synthesize findings regarding the effects of type-2 diabetes on the auditory and vestibular systems.
Main Methods:
- A comprehensive literature search was performed across PubMed, MedlinePlus, Ingenta Connect, and Google Scholar databases.
- Articles published up to June 2019 were screened, with 33 selected for systematic review.
- Studies were categorized based on whether they evaluated auditory (26 studies) or vestibular (7 studies) functions.
Main Results:
- Most studies evaluating auditory function indicated a significant negative impact of type-2 diabetes mellitus on the peripheral auditory system.
- Studies examining vestibular function generally found no significant effect of diabetes mellitus on the peripheral vestibular end-organ.
- A total of 15,980 articles were initially retrieved, with 33 meeting the inclusion criteria.
Conclusions:
- Systematic review suggests type-2 diabetes mellitus is associated with peripheral and/or central auditory impairments.
- Evidence indicates potential, though less consistently reported, impairments in peripheral vestibular end-organs.
- Further research is warranted to fully elucidate the complex relationship between type-2 diabetes and vestibular function.
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