- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05467215
Can Brief Exposure to Hyperoxia Improve Function After Chronic Spinal Cord Injury?
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This proof-of-principle study will include a small number of participants with subacute or chronic (>3 months post-injury), severe spinal cord injury (i.e., AIS A, B or C). After screening for potential contraindications, participants will attend 4 experimental sessions. In each session, their sensory or reflex function will be tested at regular intervals. Once baseline recordings are established, participants will be given either room air or 99% oxygen to breathe through a face mask for 2 minutes. It will be determined if breathing 99% oxygen results in a change in the sensory and motor functions recorded before and shortly after breathing oxygen.
Administration of a high concentration of oxygen at atmospheric pressure for a short duration has been completed without adverse effects in healthy individuals, and individuals with various forms of injury including chronic obstructive lung disease, traumatic brain injury, stroke, and spinal cord injury. Duration of administration has ranged from 3 min to 4 hours without adverse effects.
If this initial trial indicates that improvements in sensory and motor function are induced by this short exposure, exploration of therapeutic ways to increase blood flow to the spinal cord will be undertaken
Study Type
Enrollment (Estimated)
Phase
- Early Phase 1
Contacts and Locations
Study Contact
- Name: Michelle Barnes, PT
- Phone Number: 780-492-4858
- Email: carre@ualberta.ca
Study Contact Backup
- Name: Jaynie Yang, PT, PhD
- Phone Number: 7804922894
- Email: jaynie@ualberta.ca
Study Locations
-
-
Alberta
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Edmonton, Alberta, Canada, T6G 2B7
- Recruiting
- University of Alberta, Clinical Sciences Bldg
-
Contact:
- Michelle Barnes
- Phone Number: 7804055917
- Email: carre@ualberta.ca
-
Contact:
- Jaynie Yang
- Phone Number: 7804922894
- Email: jaynie@ualberta.ca
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Individuals with traumatic SCI with onset ≥3 months prior,
- Between 18 - 65 yr old,
- ASIA Impairment Scale at discharge classified as A, B or C,
- Injury level between C5 and T10,
- Able to give informed, written consent.
Exclusion Criteria:
- Frequent uncontrolled autonomic dysreflexia,
- Uncontrolled high blood pressure,
- Cardiac or cardiovascular disease,
- Cancer,
- Active urinary tract infection,
- Active pressure sores,
- Signs of deep vein thrombosis in the legs,
- Severe swelling of the feet and/or legs,
- Severe cognitive impairment,
- Pulmonary dysfunction such as chronic obstructive pulmonary disease or acute respiratory infection,
- Any condition which would be exacerbated by sitting or lying in one position for 2 hours, such as low back pain
- Pregnancy.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Hyperoxia followed by room air
Group 1 will receive oxygen (99%) in Phase 1, and room air (placebo) in Phase 2. Each phase will consist of 2 experiments.
In Phase 1, the first experiment will test skin sensation using von Frey Hairs, while the second experiment will test a cutaneous reflex.
In Phase 2, the first experiment will test the cutaneous reflex, while the second experiment will test skin sensation with von Frey Hairs.
Both high oxygen and room air will be delivered through a face mask.
The flow rate will be 10 litres/min for a 2-min period.
Participants and experimenters will be blinded to the intervention.
Measures will be taken before and after each exposure.
In this way, each participant will be involved in four experimental sessions with a minimum of 2-week intervals between every testing session.
Each experimental session will take approximately 1.5 to 2 hours.
A total duration of involvement in the study is a minimum of 7 weeks.
|
Participants will receive oxygen (99%) or room air (placebo) delivered through a face mask at a flow rate of 10 litres/min for 2 minutes.
The participants will be exposed twice to both conditions over 4 experiments at a minimum of 2 week intervals between each testing session.
Other Names:
|
Placebo Comparator: Room air followed by hyperoxia
Group 2 will receive room air (placebo) in Phase 1, and oxygen (99%) in Phase 2. Each phase will consist of 2 experiments.
In Phase 1, the first experiment will test the cutaneous reflex, while the second experiment will test skin sensation with von Frey Hairs.
In Phase 2, the first experiment will test skin sensation using von Frey Hairs, while the second experiment will test a cutaneous reflex.
Both high oxygen and room air will be delivered through a face mask approved by Health Canada.
The flow rate will be 10 litres/min for a 2-min period.
Participants and experimenters will be blinded to the intervention.
Measures will be taken before and after each exposure.In this way, each participant will be involved in four experimental sessions with a minimum of 2-week intervals between every testing session.
Each experimental session will take approximately 1.5 to 2 hours.
A total duration of involvement in the study is a minimum of 7 weeks.
|
Participants will receive oxygen (99%) or room air (placebo) delivered through a face mask at a flow rate of 10 litres/min for 2 minutes.
The participants will be exposed twice to both conditions over 4 experiments at a minimum of 2 week intervals between each testing session.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Skin Sensation
Time Frame: Pre-intervention (exposure to high oxygen)
|
Quantification using von Frey Hairs at three locations above and below the level of injury.
|
Pre-intervention (exposure to high oxygen)
|
Skin Sensation
Time Frame: Immediately after intervention (exposure to high oxygen)
|
Quantification using von Frey Hairs at three locations above and below the level of injury.
|
Immediately after intervention (exposure to high oxygen)
|
Skin Sensation
Time Frame: Pre-intervention (exposure to room air)
|
Quantification using von Frey Hairs at three locations above and below the level of injury.
|
Pre-intervention (exposure to room air)
|
Skin Sensation
Time Frame: Immediately after intervention (exposure to room air)
|
Quantification using von Frey Hairs at three locations above and below the level of injury.
|
Immediately after intervention (exposure to room air)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Reflex Excitability
Time Frame: Pre-intervention (exposure to high oxygen)
|
Elicited by electrical stimulation of the skin on the arch of the foot and measured by surface electromyography (EMG).
|
Pre-intervention (exposure to high oxygen)
|
Reflex Excitability
Time Frame: Immediately after intervention (exposure to high oxygen)
|
Elicited by electrical stimulation of the skin on the arch of the foot and measured by surface electromyography (EMG).
|
Immediately after intervention (exposure to high oxygen)
|
Reflex Excitability
Time Frame: Pre-intervention (exposure to room air)
|
Elicited by electrical stimulation of the skin on the arch of the foot and measured by surface electromyography (EMG).
|
Pre-intervention (exposure to room air)
|
Reflex Excitability
Time Frame: Immediately after intervention (exposure to room air)
|
Elicited by electrical stimulation of the skin on the arch of the foot and measured by surface electromyography (EMG).
|
Immediately after intervention (exposure to room air)
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Jaynie Yang, University of Alberta
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
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
- Pro00061817
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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.
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