Accuracy Analysis of Embletta X100 for the Diagnosis of Obstructive Sleep Apnea and the Assessment of Sleep Structure

• Published in: Journal of rhinology Vol. 25; no. 1; pp. 32 - 37
• Main Authors: Kim, Hyun Jun, Cho, Jae Hoon, Kang, So Young, Choi, Byoung-Joo
• Format: Journal Article
• Language: English
• Published: 대한비과학회 01-05-2018
• Subjects: 이비인후과학
• ISSN: 1229-1498; 2384-4361
• DOI: 10.18787/jr.2018.25.1.32

Background and Objectives: To measure the accuracy of Embletta X100, a level 2 portable sleep monitoring device, for diagnosis of obstructive sleep apnea and assessment of sleep structure.
Materials and Method: We enrolled 200 consecutive patients who had been referred due to habitual snoring or witnessed apnea during sleep and had undergone standard polysomnography (PSG). We created a simulated situation similar to that of the Embletta X100 using only data from PSG and scored the sleep stage and the apnea-hypopnea index (AHI). Thereafter, the results of PSG and simulated Embletta X100 were compared.
Results: Sensitivity, specificity, and positive and negative predictive values of simulated Embletta X100 based on PSG were nearly 100% at three different cutoff values of AHI (5, 15, and 30). Intraclass correlation (ICC) of simulated Embletta X100 based on PSG was also excellent (≥0.9) for most of the sleep-related parameters and respiratory index. However, ICC of sleep stage percent was variable according to sleep stage (>0.9 for N1 and N2, 0.664 for N3, and 0.864 for R).
Conclusion: Although sleep staging is not very precise, Embletta X100 matches well with PSG overall. KCI Citation Count: 0