NCT04612114

Brief Summary

The investigators will conduct this study to validate Belun Ring for sleep assessment. The investigators will compare Belun Ring data collection and overnight in-lab polysomnography (PSG) measures of SDB and sleep architecture in adults with OSA symptoms. The investigators propose to recruit a total of 40 participants with symptoms of obstructive sleep apnea. The investigators will i) validate the overall accuracy, sensitivity and specificity of Belun Ring to assess SDB and sleep architecture, using PSG analysis as a gold standard.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
40

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Jul 2020

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 21, 2020

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

October 22, 2020

Completed
11 days until next milestone

First Posted

Study publicly available on registry

November 2, 2020

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 30, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 30, 2022

Completed
Last Updated

June 22, 2022

Status Verified

June 1, 2022

Enrollment Period

1.8 years

First QC Date

October 22, 2020

Last Update Submit

June 20, 2022

Conditions

Keywords

obstructive sleep apneapulse oximeterpolysomnography

Outcome Measures

Primary Outcomes (1)

  • Validation with gold-standard polysomnography (PSG) recording

    Concordance rate of respiratory disturbance index (RDI) from Belun Ring and apnea-hypopnea Index (AHI) from PSG

    through study completion, an average of 1 year

Study Arms (1)

Possible OSA

Patients with OSA symptoms (snoring, excessive daytime sleepiness or witnessed apnea, etc.)

Diagnostic Test: Belun Ring

Interventions

Belun RingDIAGNOSTIC_TEST

Simultaneous recording of Belun Ring data (pulse oximeter, pulse rate and actigraphy) and standard of care PSG will be performed for one night.

Possible OSA

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

i) 40 participants ii) All enrollment will be at Stanford iii) Patients with obstructive sleep apnea will be enrolled

You may qualify if:

  • Age between 18 to 80 years old. Ideally balanced for sex and age (18 to 80 years old)
  • No more than 75% of subjects in one bin of: (male, female)
  • No more than 50% of subjects in one age-group (18-29, 30-39, 40-49, 50-59, 60-80)
  • Patients with OSA symptoms (snoring, excessive daytime sleepiness or witnessed apnea, etc.)
  • Without any unstable medical or psychiatric co-morbidities that would be expected to interfere with the study.
  • If taking any medication, must be on a stable dose of medication for a month
  • Able to read and understand English

You may not qualify if:

  • Presence of any significant systemic or unstable medical condition which could lead to difficulty complying with the protocol, suicidality, current regular use of psychiatric medications, opiates, or thyroid medications, dementia, current substance abuse, post-traumatic or psychotic disorders, bipolar disorder; any significant neurologic disease, including possible and probable dementia, Parkinson's or Huntington's disease, brain tumor, progressive supranuclear palsy, seizure disorder, subdural hematoma, multiple sclerosis, history of significant head trauma, history of alcohol or substance use disorder within the past 2 years (DSM V criteria);
  • If positive airway pressure (PAP) titration study or split night study (diagnostic and PAP titration study combined)
  • Under 18 or over 80 years of age

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Stanford University

Redwood City, California, 94063, United States

Location

MeSH Terms

Conditions

Sleep Apnea, Obstructive

Condition Hierarchy (Ancestors)

Sleep Apnea SyndromesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System Diseases

Study Officials

  • Makoto Kawai, MD

    Stanford University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Associate Professor

Study Record Dates

First Submitted

October 22, 2020

First Posted

November 2, 2020

Study Start

July 21, 2020

Primary Completion

April 30, 2022

Study Completion

April 30, 2022

Last Updated

June 22, 2022

Record last verified: 2022-06

Data Sharing

IPD Sharing
Will not share

Locations