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Relation Between Glycated Hemoglobin Level and Hearing Loss in Type 2 Diabetic Patients
Mayada ElSherif1, Aya Fathey El Sayed Mahfouz1, Noha Mohamed Gaber Amin2
1Department of Otorhinolaryngology, Audiovestibular Medicine Unit, Alexandria University Faculty of Medicine, Alexandria, Egypt.
The Journal of International Advanced Otology
|December 11, 2024
Summary
Poor glycemic control in type 2 diabetes patients is linked to higher hearing thresholds. This study found that elevated glycated hemoglobin (HbA1c) levels correlate with impaired hearing, especially at higher frequencies.
Area of Science:
- Audiology
- Endocrinology
- Metabolic Diseases
Background:
- Type 2 diabetes management relies on monitoring glycemic control via glycated hemoglobin (HbA1c).
- Hearing impairment is a potential complication of diabetes.
- The relationship between HbA1c levels and hearing thresholds requires further investigation.
Purpose of the Study:
- To investigate the correlation between serum glycated hemoglobin (HbA1c) levels and hearing thresholds in patients with type 2 diabetes.
- To compare hearing thresholds between diabetic patients and healthy individuals.
Main Methods:
- A case-control study involving 82 participants (42 with type 2 diabetes, 40 healthy controls).
- Audiometric evaluations (pure tone and speech) were performed on all participants.
- Diabetes assessments included fasting blood glucose and serum HbA1c levels.
Main Results:
- Diabetic patients exhibited significantly higher hearing thresholds compared to the control group.
- Hearing thresholds showed an upward trend towards higher frequencies in both groups.
- No significant difference in hearing thresholds was found based on diabetes duration or fasting blood glucose levels, except at 16,000 Hz.
Conclusions:
- Poor glycemic control, indicated by HbA1c levels ≥ 7%, is significantly associated with elevated hearing thresholds in type 2 diabetes patients.
- Elevated HbA1c levels may contribute to hearing loss in diabetic individuals.
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