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KHẢO SÁT ĐẶC ĐIỂM ĐA KÝ GIẤC NGỦ Ở BỆNH NHÂN NAM BÉO PHÌ MẮC HỘI CHỨNG NGỪNG THỞ KHI NGỦ DO TẮC NGHẼN
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Abstract
Objective: This study aims to describe polysomnography findings in male patients with obstructive sleep apnea (OSA) and a body mass index (BMI) of 25 or higher, and to analyze the relationship between BMI and OSA severity.
Subjects and Methods: A cross-sectional descriptive study was conducted on 51 male patients diagnosed with OSA and BMI ≥ 25, who underwent polysomnography at the National Geriatric Hospital from January 2023 to September 2024. Data collected included clinical features such as age, BMI, apnea-hypopnea index (AHI), and lowest blood oxygen saturation (SpO₂). Statistical analysis was performed to explore the association between BMI and OSA severity.
Results: The average age of the 51 patients was 42.75 ± 13.8 years, with a mean BMI of 27.28 ± 2.6 kg/m². Based on AHI, 29.4% of patients had mild OSA, 15.7% had moderate OSA, and 54.9% had severe OSA. Regarding the lowest SpO₂ levels, 19.6% of patients had SpO₂ between 86-90%, 15.7% had SpO₂ between 80-85%, and 64.7% had SpO₂ < 80%. Linear regression analysis showed a weak positive correlation between BMI and OSA severity (r = 0.28) with a p-value of 0.046, indicating statistical significance. However, the correlation between BMI and lowest SpO₂ was not statistically significant (r = -0.24, p = 0.09).
Conclusion: The study results suggest a weak positive correlation between BMI and OSA severity. We recommend polysomnography for male patients with BMI ≥ 25, especially those presenting with clinical symptoms of sleep apnea.
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Keywords
Obstructive sleep apnea, polysomnography, BMI, apnea-hypopnea index, sleep apnea syndrome
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