Journal of Shandong University (Health Sciences) ›› 2026, Vol. 64 ›› Issue (9): 17-25.doi: 10.6040/j.issn.1671-7554.0.2025.1237

• Clinical Medicine • Previous Articles    

Diagnostic value of millimeter-wave radar monitoring for paediatric obstructive sleep apnoea syndrome

SHI Xiaoli, GUO Ruixiang, ZHAO Yan, BIAN Tianshuai, WANG Xiaohua, MU Hong   

  1. Department of Otorhinolaryngology Ⅰ, Childrens Hospital Affiliated to Shandong University, Jinan 250022, Shandong, China
  • Published:2026-09-09

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Abstract: Objective To evaluate the application value of a sleep respiratory non-contact portable monitoring device(Qinglei PMD)based on millimeter-wave radar technology in the diagnosis of paediatric obstructive sleep apnoea(OSA). Methods A total of 101 children aged 4-15 years suspected of OSA from July 2023 to July 2024 were enrolled in the study. All participants underwent aseries of evaluations,including simultaneous overnight polysomnography(PSG, regardedas the gold standard)and Qinglei PMD monitoring. The differences and correlations of indicators including the obstructive apnoea-hypopnea index(OAHI)and the lowest pulse oxygen saturation(LSpO2)between the two devices were analyzed. Subgroup consistency analysis was performed on the basis of age, gender, and comorbidities. The diagnostic efficacy of Qinglei PMD was assessed using the receiver operating characteristic curve(ROC). The optimal diagnostic cut-off value was determined via the Youden index, and the sensitivity and specificity of Qinglei PMD for diagnosing paediatric OSA were calculated accordingly. Results No significant statistical difference was observed in OAHI between Qinglei PMD and PSG(P>0.05), with a strong positive correlation(rs=0.89, P<0.01)and an intraclass correlation coefficient(ICC)of 0.85(P<0.01). The Bland-Altman agreement analysis demonstrated that 95.05% of the data points fell within the limits of agreement, and consistency in all subgroups reached good or excellent levels. Statistical disparities were identified in AHI, LSpO2, and mean oxygen saturation between Qinglei PMD and PSG(all P<0.01). However, these disparities did not attain clinically significant thresholds. ROC analysis revealed that the area under the curve(AUC)of Qinglei PMD for diagnosing paediatric OSA was 0.91. Utilizing the optimal cut-off value-of OAHI≥2.15 events/hour, the sensitivity was determined to be 76.90%, while the specificity was found to be 100.00%. Conclusion Qinglei PMD demonstrates a high degree of consistency with PSG in the diagnosis of paediatric OSA, with reliable measurement of the core indicator OAHI. The device exhibits both high specificity(100%)and non-contact monitoring advantages, which have the potential to enhance patient compliance and are well-suited for initial screening in primary healthcare settings. Consequently, it possesses significant clinical promotion value.

Key words: Paediatric obstructive sleep apnoea, Portable sleep monitoring, Polysomnography, Diagnostic performance

CLC Number: 

  • R762
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