Hyperthyroidism in a patient referred for an assessment of obstructive sleep apnea syndrome

Autor: Katsuhisa Banno, Kuniyuki Okamura, Meir H. Kryger
Rok vydání: 2006
Předmět:
Zdroj: Sleep Medicine. 7:195-196
ISSN: 1389-9457
DOI: 10.1016/j.sleep.2005.09.001
Popis: A 55-year-old man (body mass index: 35.6 kg/m) was reassessed for obstructive sleep apnea syndrome (OSAS) because he had begun experiencing daytime sleepiness again (Epworth sleepiness scaleZ13). Previously diagnosed with severe OSAS with an apnea-hypopnea index (AHI) of 103.1/h, he was treated with bilevel positive airway pressure (BiPAP); however, he had stopped using BiPAP because he had lost approximately 100 lbs in the previous two years. His medical history was not contributory except for the weight loss and the development of night sweats. Atrial fibrillation had been present for almost one year. The sleep study confirmed OSAS (moderate severity) with an AHI of 21.4/h. The technician noted that the patient was sweating so prefusely that the EEG electrodes and the ear sensor for the oximeter had to be reapplied several times during the night. The polysomnographic record also showed ‘slow’ and somewhat atypical sweat artifacts (Fig. 1), which was consistent with his complaint of developing night sweats and atrial fibrillation. Weight loss, night sweats, and recent onset of atrial fibrillation were suggestive of hyperthyroidism. Blood tests confirmed hyperthyroidism: thyroid-stimulating hormone (TSH): !0.015 mU/L (Normal value: 0.4–4.2), free T3: 17.1 pmol/L (3.7– 6.9), and free T4: 43.4 pmol/ L (9.7–25.7). The patient was ultimately diagnosed with hyperthyroidism and OSAS.
Databáze: OpenAIRE
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