Brainstem auditory evoked potential abnormalities in type 2 diabetes mellitus.

Area of Science:

• Neuroscience
• Endocrinology
• Audiology

Background:

• Diabetes mellitus is a complex syndrome affecting multiple organ systems, including the central nervous system.
• Neurological complications are common in diabetes, impacting various pathways.
• The central auditory pathway's vulnerability in diabetes requires further investigation.

Purpose of the Study:

• To investigate changes in brainstem auditory evoked potentials (BAEPs) in individuals with type 2 diabetes mellitus.
• To assess the early involvement of the central auditory pathway in diabetic males.
• To determine if BAEPs can accurately detect auditory pathway alterations in diabetes.

Main Methods:

• A cross-sectional study involving 126 males with type 2 diabetes (aged 35-50) and 106 age-matched healthy controls.
• Recording of brainstem auditory evoked potentials, analyzing wave latencies (I-V) and interpeak latencies (I-III, III-V, I-V).
• Statistical analysis using Student's unpaired t-test to compare diabetic and control groups.

Main Results:

• Significant bilateral delays in the latency of waves III, V, and interpeak latencies III-V and I-V were observed in diabetic males.
• A significant delay in wave IV latency was noted only in the right ear of diabetic subjects.
• No significant differences were found for wave IV latency in the left ear, or for waves I, II, and interpeak latency I-III bilaterally.

Conclusions:

• Diabetes patients exhibit early involvement of the central auditory pathway.
• Auditory evoked potential studies can detect these auditory pathway changes with fair accuracy.
• These findings highlight the utility of BAEPs in monitoring diabetic neuropathy.