Comparative study of the SleepImage ring device and polysomnography for diagnosing obstructive sleep apnea

Mi Lu; Lisa Brenzinger; Lisa Rosenblum; Matthew Salanitro; Ingo Fietze; Martin Glos; Giuseppe Fico; Thomas Penzel

doi:10.1007/s13534-023-00304-9

Comparative study of the SleepImage ring device and polysomnography for diagnosing obstructive sleep apnea

Biomed Eng Lett. 2023 Jul 17;13(3):343-352. doi: 10.1007/s13534-023-00304-9. eCollection 2023 Aug.

Authors

Mi Lu^{1

2}, Lisa Brenzinger¹, Lisa Rosenblum¹, Matthew Salanitro¹, Ingo Fietze¹, Martin Glos¹, Giuseppe Fico³, Thomas Penzel¹

Affiliations

¹ Interdisciplinary Center of Sleep Medicine, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.
² Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
³ Department of Biomedical Engineering, Polytechnic University of Madrid, Madrid, Spain.

PMID: 37519866
PMCID: PMC10382437 (available on 2024-07-17)
DOI: 10.1007/s13534-023-00304-9

Abstract

Purpose We aim to evaluate the diagnostic performance of the SleepImage Ring device in identifying obstructive sleep apnea (OSA) across different severity in comparison to standard polysomnography (PSG). Methods Thirty-nine patients (mean age, 56.8 ± 15.0 years; 29 [74.3%] males) were measured with the SleepImage Ring and PSG study simultaneously in order to evaluate the diagnostic performance of the SleepImage device for diagnosing OSA. Variables such as sensitivity, specificity, positive and negative likelihood ratio, positive and negative predictive value, and accuracy were calculated with PSG-AHI thresholds of 5, 15, and 30 events/h. Receiver operating characteristic curves were also built according to the above PSG-AHI thresholds. In addition, we analyzed the correlation and agreement between the apnea-hypopnea index (AHI) obtained from the two measurement devices. Results There was a strong correlation (r = 0.89, P < 0.001 and high agreement in AHI between the SleepImage Ring and standard PSG. Also, the SleepImage Ring showed reliable diagnostic capability, with areas under the receiver operating characteristic curve of 1.00 (95% CI, 0.91, 1.00), 0.90 (95% CI, 0.77, 0.97), and 0.98 (95% CI, 0.88, 1.000) for corresponding PSG-AHI of 5, 15 and 30 events/h, respectively. Conclusion The SleepImage Ring could be a clinically reliable and cheaper alternative to the gold standard PSG when aiming to diagnose OSA in adults.

Supplementary information: The online version contains supplementary material available at 10.1007/s13534-023-00304-9.

Keywords: Apnea-hypopnea index; Cardiopulmonary coupling; Obstructive sleep apnea; Polysomnography.

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