Belun Ring Validation Study for Assessment of Obstructive Sleep Apnea
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ClinicalTrials.gov Identifier: NCT03997916 |
Recruitment Status :
Completed
First Posted : June 25, 2019
Results First Posted : January 19, 2023
Last Update Posted : January 19, 2023
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Condition or disease | Intervention/treatment | Phase |
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Obstructive Sleep Apnea | Device: Belun Ring Diagnostic Test: PSG | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 113 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Device Feasibility |
Official Title: | A Validation Investigation of the Accuracy of the Belun Ring, an Innovative Single-channel Four-signal Pulse Oximetry, in Patients Referred to Sleep Lab for Assessment of Obstructive Sleep Apnea |
Actual Study Start Date : | May 6, 2019 |
Actual Primary Completion Date : | June 30, 2019 |
Actual Study Completion Date : | July 30, 2019 |

Arm | Intervention/treatment |
---|---|
Participant
All patients scheduled for attended overnight in-lab polysomnography (PSG), also known as sleep study, in our 2 sleep labs will undergo PSG testing. On the same night of the PSG testing, these same patients will also wear the Belun Ring device. After the study, we will compare results of the Belun Ring device vis-à-vis with the results of the PSG on the same patient. There will be no separate arm to test a different device.
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Device: Belun Ring
All patients scheduled for attended overnight in-lab polysomnography (PSG) in our 2 sleep labs will undergo PSG testing. On the same night of the PSG testing, these same patients will also wear the Belun Ring device. After the study, we will compare results of the Belun Ring device vis-à-vis with the results of the PSG on the same patient. Diagnostic Test: PSG All patients scheduled for attended overnight in-lab polysomnography (PSG) in our 2 sleep labs will undergo PSG testing. On the same night of the PSG testing, these same patients will also wear the Belun Ring device. After the study, we will compare results of the Belun Ring device vis-à-vis with the results of the PSG on the same patient. |
- Performance (Mean With 95% CI) of bAHI at PSG--AHI Cutoffs of 5, 15 and 30 (Accuracy) [ Time Frame: Same night when both testing were done on the same subject ]Comparing the accuracy, sensitivity, specificity of Belun Ring Device versus gold standard Polysomnography for Obstructive Sleep Apnea
- Sensitivity [ Time Frame: Same night when both testing were done on the same subject ]Comparing the accuracy, sensitivity, specificity of Belun Ring Device versus gold standard Polysomnography for Obstructive Sleep Apnea
- Specificity [ Time Frame: Same night when both testing were done on the same subject ]Comparing the accuracy, sensitivity, specificity of Belun Ring Device versus gold standard Polysomnography for Obstructive Sleep Apnea

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Ages Eligible for Study: | 18 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- All adult patients age 18-80 years old scheduled for overnight in-lab sleep study
- Provision of signed and dated written informed consent form
Exclusion Criteria:
- Recent hospitalization in the past 30 days
- Patients on home oxygen, non-invasive ventilator, diaphragmatic pacing, or any form of nerve stimulator
- Patients with pacemaker, defibrillator, left ventricular assist device (LVAD), or status post cardiac transplantation
- Patients with baseline heart rate under 50 bpm or over 100 bpm during last clinic visit or prior to study at the sleep lab
- Patients with unstable cardiopulmonary status judged to be unsafe for sleep study by the sleep technician and/or the on-call sleep physician in the sleep lab on the night of the study
- Patients who are unable to complete the required study
- Patients involved in another investigational study
- Pregnant women

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03997916
United States, Ohio | |
Residence Inn Marriott | |
Beachwood, Ohio, United States, 44122 | |
University Hospitals Cleveland Medical Center | |
Cleveland, Ohio, United States, 44106 |
Principal Investigator: | Eric Yeh, MD | University Hospitals Cleveland Medical Center | |
Study Director: | Ambrose Chiang, MD | University Hospitals Cleveland Medical Center | |
Study Director: | Kingman Strohl, MD | University Hospitals Cleveland Medical Center |
Documents provided by Eric Yeh, MD, University Hospitals Cleveland Medical Center:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Eric Yeh, MD, Fellow in Sleep Medicine, University Hospitals Cleveland Medical Center |
ClinicalTrials.gov Identifier: | NCT03997916 |
Other Study ID Numbers: |
STUDY20181042 |
First Posted: | June 25, 2019 Key Record Dates |
Results First Posted: | January 19, 2023 |
Last Update Posted: | January 19, 2023 |
Last Verified: | April 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Belun Ring pulse oximeter obstructive sleep apnea |
Apnea Sleep Apnea Syndromes Sleep Apnea, Obstructive Respiration Disorders Respiratory Tract Diseases |
Signs and Symptoms, Respiratory Sleep Disorders, Intrinsic Dyssomnias Sleep Wake Disorders Nervous System Diseases |