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Brainstem auditory-evoked potential examinations in diabetic patients
F Tóth1, T T Várkonyi, J G Kiss
1Department of Otolaryngology, Albert Szent-Györgyi Medical University, Szeged, Hungary. feri@orl.szote.u-szeged.hu
Scandinavian Audiology. Supplementum
|April 25, 2001
Summary
Long-standing type-1 diabetes mellitus (DM) can impair auditory brainstem function, as shown by altered brainstem auditory-evoked potential (BAEP) results in patients. This dysfunction correlates with cardiovascular autonomic neuropathy, suggesting a link to central auditory pathway issues.
Area of Science:
- Neuroscience
- Endocrinology
- Audiology
Background:
- Type-1 diabetes mellitus (DM) is a chronic condition affecting multiple organ systems.
- Diabetic neuropathy, including autonomic neuropathy, is a common complication.
- Auditory pathway integrity can be affected by systemic diseases.
Purpose of the Study:
- To compare brainstem auditory-evoked potential (BAEP) results in patients with long-standing type-1 DM to healthy controls.
- To investigate the correlation between auditory brainstem function alterations and cardiovascular autonomic neuropathy in type-1 DM.
- To explore the potential link between diabetic neuropathy and central auditory pathway dysfunction.
Main Methods:
- Brainstem auditory-evoked potential (BAEP) examinations were conducted on 15 patients with long-standing type-1 DM and a control group.
- Cardiovascular reflex tests were used to assess the presence and severity of autonomic neuropathy.
- Analysis included BAEP wave latencies, inter-peak latencies, and amplitudes, correlated with autonomic function scores.
Main Results:
- Significant differences in BAEP latencies (waves I, II, III, V) and inter-peak latencies (I-III, I-V) were found between diabetic patients and controls.
- Wave amplitudes (I, III, V) were significantly lower in the type-1 DM group compared to healthy individuals.
- A positive correlation was observed between the overall autonomic score and increased BAEP latencies (waves III, V) and inter-peak latencies (I-III, I-V).
Conclusions:
- Long-standing type-1 diabetes mellitus is associated with measurable alterations in central auditory pathway function.
- Diabetic neuropathy, particularly cardiovascular autonomic neuropathy, is correlated with these auditory pathway dysfunctions.
- These findings support the hypothesis that diabetic neuropathy may contribute to central auditory pathway impairments in patients with long-standing type-1 DM.