Are Thyroid Function Tests Necessary in Patients with Obstructive Sleep Apnea?
Mustafa Serkan Karakaş*, Refik Emre Altekin**, Ahmet Oğuz Baktır***, Arzu Er**, Sinan Cemgil Ãzbek****, Atakan Yanıkoğlu**, Barış Akdemir**, Aykut Ãilli*****.
Aim: Obstructive sleep apnea syndrome (OSAS) is common in society, and hypothyroidism is a disease that can be seen along with rates ranging from 1.2 to 11%. Symptomatology spectrum of OSAS is very wide. These symptoms suggest OSAS but these symptoms are not definitive diagnostic feature. Patients with OSAS have symptoms such as throughout the day drowsiness, obesity, snoring, apathy and lethargy, that can be seen in all of them are faced with hypothyroidism. Regarded among the etiological causes in endocrine disorders, reduction of thyroid hormones can be easily detected. Measurement of serum levels of thyroid hormone is inexpensive and it is guidance for treatment planning. We investigate thyroid hormone levels in patients who were diagnosed as OSAS with polysomnography (PSG) and determine the prevalence of hypothyroidism in patients with OSAS.
Material and Method: Ninety-three patients with complaints of snoring who were diagnosed as OSAS with PSG were examined in the study between March 2009-November 2010. Thyroid function tests were performed in these patients.
Results: According to the severity, 30 patients were in mild, 32 patients were in moderate and 31 patients were in severe OSAS group. Hypothyroidism was detected in 5 of those 93 OSAS patients (5,37%). Two of these patients had clinical hypothyroidism and three of these patients had subclinical hypothyroidism.
Conclusion: In our study, the prevalence of hypothyroidism and OSAS was found compatible with the literature. Reduction in symptoms and apnea hypopnea index with thyroid hormone therapy in OSAS patients with hypothyroidism is considering and hypothyroidism screening tests should be made with the suspicion of OSAS.
Key Words:Â Obstructive Sleep Apnea Syndrome; Hypothyroidism; Diagnosis.