- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01751971
Estimating Apnea Phenotypes From Polysomnography: Oxygen (PSGtraits-O2)
Estimating Apnea Phenotypes From Routine Polysomnography: Application to Oxygen Therapy
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Massachusetts
-
Boston, Massachusetts, United States, 02115
- Brigham and Women's Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Apnea/hypopnea index >20 events per hour
- Age 20-79 years
Exclusion Criteria:
- COPD with desaturation (resting SpO2<96%)
- Use of respiratory stimulants or depressants
- Pregnancy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Inspired Oxygen First
Participants breathe air with additional inspired oxygen (40%) for 1 night during an overnight sleep study (15 L/min via venturi mask). 1 week later participants will crossover to Sham (sham comparator).
|
Supplemental oxygen at 40% inspired via venturi mask (15 L/min).
Equivalent to 5 L/min via nasal cannula.
Other Names:
Medical air with 21% oxygen via venturi mask (15 L/min).
Other Names:
|
Sham Comparator: Sham First
Participants breathe air without additional inspired oxygen for 1 night during sleep (15 L/min via Venturi mask). 1 week later participants will crossover to Inspire Oxygen (active intervention).
|
Supplemental oxygen at 40% inspired via venturi mask (15 L/min).
Equivalent to 5 L/min via nasal cannula.
Other Names:
Medical air with 21% oxygen via venturi mask (15 L/min).
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Apnea-hypopnea Index
Time Frame: 1 night
|
Apnea-hypopnea index (AHI) will be compared between oxygen and sham nights. Hypopneas are based on 30% reduction in airflow (no desaturation or arousal criteria). AHI data are exclusive to non-REM supine sleep. The results presented here are for the AHI at each intervention ("per intervention") regardless of the sequence (preferred clinicaltrials.gov format). Please note, however, that the a priori outcome measure was the reduction in AHI with oxygen as a percent of sham values, i.e. (AHI on sham - AHI on oxygen)/(AHI on sham) % (a comparison with greater statistical power), compared between patient subgroups (see Statistical Analysis section). Subgroups were defined a priori as higher (>=0.7) versus lower loop gain (<0.7), but tests were also performed in subgroups defined by "favorable" versus "unfavorable" pathophysiology. |
1 night
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Frequency of EEG Arousals (Events Per Hour)
Time Frame: 1 night
|
Frequency of scored EEG arousals per hour of non-REM sleep.
Note: Our objective was to describe changes in secondary outcomes within phenotypic subgroups.
Overall effects (unselected patients / ignoring phenotypic subgroups) are first presented below, followed by effects in favorable vs. unfavorable subgroups.
|
1 night
|
Overnight Change in Systolic Blood Pressure
Time Frame: 1 night
|
The change in systolic blood pressure overnight.
Two supine oscillometric measurements of blood pressure are made: just prior to lights out (evening), and after lights on (morning).
|
1 night
|
Overnight Change in Diastolic Blood Pressure
Time Frame: 1 night
|
The change in diastolic blood pressure overnight.
Two supine oscillometric measurements of blood pressure are made: just prior to lights out (evening), and after lights on (morning).
|
1 night
|
Subjective Sleep Quality (Oxygen vs Sham)
Time Frame: 1 night
|
Better(+1)/Same(0)/Worse(-1) on oxygen vs sham, i.e. "a relative comparison between arms".
When subjects had completed the entire study, they were asked to compare subjectively their sleep quality on the first versus second study.
|
1 night
|
Subjective Sleepiness/Alertness (Stanford Sleepiness Scale)
Time Frame: 1 night
|
Assessed in the morning after the single night of treatment.
Minimum score: 1 (alert), maximum score: 7 (not alert).
|
1 night
|
Collaborators and Investigators
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2005P001296-O2PSG
- R01HL090897 (U.S. NIH Grant/Contract)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Sleep Apnea
-
ResMedCRI-The Clinical Research Institute GmbH; University Hospital RegensburgCompletedObstructive Sleep Apnea | Central Sleep Apnea | Mixed Sleep Apnea | Complex Sleep ApneaSwitzerland, Spain, Denmark, Portugal, France, Germany
-
ResMedCompletedObstructive Sleep Apnea | Central Sleep Apnea (Diagnosis) | Chronic Opioid UseUnited States
-
Medtronic - MITGCompletedObstructive Sleep Apnea | Sleep Apnea | Sleep-Disordered Breathing | Central Sleep ApneaUnited States
-
ResMedRWTH Aachen UniversityRecruitingObstructive Sleep Apnea | Central Sleep Apnea | Mixed Sleep ApneaGermany
-
Somnarus IncCompletedObstructive Sleep Apnea | Cheyne-Stokes Respiration | Central Sleep Apnea | Mixed Sleep ApneaUnited States
-
University of California, Los AngelesRecruiting
-
Brigham and Women's HospitalCompletedObstructive Sleep Apnea (OSA)United States
-
LivaNovaRecruitingApnea | Obstructive Sleep Apnea | OSA | Apnea, Obstructive | Apnea+Hypopnea | Apnea, Obstructive Sleep | Hypopnea, SleepUnited States
-
The Hospital for Sick ChildrenRecruitingObstructive Sleep Apnea | Hypoventilation | Central Sleep ApneaCanada
-
Cleveland Medical Devices IncJohns Hopkins University; The Cleveland Clinic; National Institutes of Health...CompletedObstructive Sleep Apnea | Sleep Disordered Breathing | Central Sleep ApneaUnited States
Clinical Trials on Inspired oxygen (40%)
-
Istanbul UniversityKoşuyolu Kartal Heart Training and Research HospitalUnknown
-
Istanbul UniversityCompleted
-
Aalborg University HospitalRigshospitalet, Denmark; Copenhagen Trial Unit, Center for Clinical Intervention...Active, not recruitingHypoxemic Respiratory Failure | Oxygen ToxicityNorway, Switzerland, Denmark
-
Aalborg University HospitalRigshospitalet, Denmark; Copenhagen Trial Unit, Center for Clinical Intervention...CompletedHypoxemic Respiratory Failure | Oxygen ToxicityUnited Kingdom, Denmark, Finland, Iceland, Netherlands, Norway, Switzerland
-
Beth Israel Deaconess Medical CenterCompletedChronic Obstructive Pulmonary DiseaseUnited States
-
Sichuan Provincial People's HospitalNot yet recruitingUnrecognized ConditionChina
-
University of Missouri-ColumbiaSacred Heart Health SystemRecruiting
-
Ankara City Hospital BilkentCompletedPostoperative Nausea and Vomiting | Laparoscopic CholecystectomyTurkey
-
Chang Gung Memorial HospitalCompleted