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Tympanometric changes and eustachian tube function in patients with hypothyroidism.
Israfil Orhan1, Fatih Palit, Salih Aydin
1From the Departments of *Ear Nose and Throat and †Internal Medicine, Istanbul Medipol University, Istanbul; and ‡Training and Research Hospital Department of ENT, Elazig, Turkey.
The Journal of Craniofacial Surgery
|May 7, 2014
Summary
Hypothyroidism is linked to eustachian tube dysfunction (ETF) and altered tympanometric measurements. Treatment improved ETF in hypothyroid patients, suggesting a reversible effect on middle ear function.
Area of Science:
- Otolaryngology
- Endocrinology
Background:
- Hypothyroidism is a common endocrine disorder.
- Eustachian tube dysfunction (ETF) can affect middle ear pressure and hearing.
Purpose of the Study:
- To investigate tympanometric changes and eustachian tube function (ETF) in patients with hypothyroidism.
- To assess the impact of hypothyroidism treatment on ETF and tympanometry.
Main Methods:
- Compared ETF and tympanometry in 40 hypothyroid patients and 40 euthyroid controls.
- Assessed ETF using automatic tests and tympanometric measurements.
- Repeated assessments after hypothyroidism treatment with levothyroxine sodium.
Main Results:
- Hypothyroid patients showed statistically significant ET dysfunction compared to controls (P < 0.01).
- ETF improved in hypothyroid patients after treatment, with functional rates increasing from 61.3% to 78.8%.
- Statistically significant improvements in pressure and compliance measurements were observed post-treatment (P < 0.05).
Conclusions:
- Hypothyroidism can alter tympanometric measurements and cause eustachian tube dysfunction.
- Treatment for hypothyroidism may positively impact eustachian tube function.
- Further research is needed to fully understand the relationship between hypothyroidism and tympanometry.
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