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Improving Post COVID-19 Syndrome With Hyperbaric Oxygen Treatments

Improving Post COVID-19 Syndrome With Hyperbaric Oxygen Treatments (PCS-HBOT Study)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06082518
Acronym
PCS-HBOT
Enrollment
40
Registered
2023-10-13
Start date
2024-01-02
Completion date
2027-07-01
Last updated
2026-09-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19, Fatigue, Fatigue Syndrome, Chronic, Post COVID-19 Condition, Post-COVID-19 Syndrome, Post-COVID Syndrome

Keywords

Hyperbaric Oxygen Therapy, HBOT, Post COVID-19 Condition, Fatigue, Severe Acute Respiratory Syndrome-CoV-2, COVID-19

Brief summary

Over 500 million people have been infected with COVID-19, and to date, more than 6 million people have died. Many individuals who have recovered from COVID-19 continue to experience symptoms even after they have been "cured" of the disease. This condition is known as post COVID-19 condition, which can have serious health consequences. A common symptom among these individuals is chronic fatigue, characterized by persistent tiredness or lack of energy. This study aims to explore a novel treatment for symptoms of post COVID-19 condition, known as hyperbaric oxygen therapy. This approach has shown promise in helping people with post COVID-19 conditions and treating some other causes of fatigue. Hyperbaric oxygen therapy involves placing patients in a small chamber where they receive high oxygen gas levels. However, this treatment is expensive and time-consuming, and it is unclear if this treatment can be effectively assessed in a large-scale research study. This small study will help us decide if conducting a large research study is feasible. The investigators aim to assess if hyperbaric oxygen therapy can improve symptoms of post COVID-19 condition, such as fatigue.

Detailed description

Over 500 million individuals worldwide have contracted COVID-19. Among those that have 'recovered' from the acute infection, many suffer from post-COVID-19 condition (experiencing 1 or more symptoms 3 months from the onset of acute COVID-19 infection, with symptoms lasting at least 2 months). Many of these common symptoms, including fatigue, myalgia, and difficulty focusing ('brain fog'), can seriously compromise one's quality of life. Existing treatments predominantly focus on supportive management and specific symptom control, and most approaches have mixed or limited effectiveness. Recently, hyperbaric oxygen therapy (HBOT), acknowledged for its anti-inflammatory effects, has emerged as a potential treatment for post-COVID-19 condition symptoms. However, HBOT is time and resource-intensive, requiring between 20-40 daily treatments. Therefore, the feasibility of assessing HBOT efficacy via a large-scale randomized controlled trial is still being determined. Hence, this study aims to evaluate adherence to the protocol and the feasibility of proceeding with the full trial. The goal of the full trial will be to evaluate the impact of HBOT treatment on post-COVID-19 condition symptoms. This prospective, crossover, randomized pilot trial enrolls adult patients officially diagnosed with post-COVID-19 condition by a healthcare practitioner who continue to experience symptoms, particularly fatigue, at least 3 months following their initial COVID-19 infection. Participants will be assigned randomly (stratified by sex) to either begin HBOT treatments immediately or after a 60-day interval. All patients will be followed for 12 months from the start of treatment, with assessments at the time of enrollment (baseline), start of treatment (if starting 60 days after enrollment), 4 weeks after the start of treatment, and every 2 months from the first HBOT treatment for 1 year. A subjective questionnaire regarding patient satisfaction will also be completed after the last HBOT treatment session and at 1 year after the start of treatment.

Interventions

DEVICEMonoplace Hyperbaric Chamber (Class III medical device).

40 hyperbaric oxygen therapy (HBOT) treatments (90 minute exposures at 2 atmospheres (ATM) per treatment), scheduled daily from Monday to Friday (i.e., 5 treatments per week) until treatments are completed (approximately 8 weeks). Treatments will be delivered in a medical grade, Health Canada-approved monoplace hyperbaric chamber and overseen by specialist hyperbaric physicians and a Certified Hyperbaric Technologist. Device is being used in manner consistent with approved usage in Canada.

Sponsors

Sunnybrook Health Sciences Centre
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Caregiver, Outcomes Assessor)

Masking description

Specialist hyperbaric physicians, blinded to group allocation, will provide treatment and follow patients daily throughout their treatment course. Outcomes Assessor will also be blinded to group allocation.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age ≥ 18 years old 2. Officially diagnosed with post COVID-19 condition by a healthcare practitioner 3. At least three months since SARS-CoV-2 infection 4. Symptoms that persist more than 12 weeks: * Chronic fatigue (must include) along with one of the following symptoms: * Difficulty thinking or problem solving ('brain fog') * Stress or anxiety

Exclusion criteria

1. Contraindications/medically unfit to receive hyperbaric treatments at an outpatient facility (pneumothorax, in-patients, requiring infusions to maintain hemodynamics, active and unstable coronary disease) 2. Patients with cognitive difficulties and/or mental retardation before COVID diagnosis 3. History of traumatic brain injury 4. Unlikely to comply with follow-up assessments (e.g. no fixed address, plans to move out of town) 5. Known pregnancy or planning a pregnancy in women of childbearing age

Design outcomes

Primary

MeasureTime frameDescription
Recruitment rate - referral9 monthsQuantify referral rate from healthcare providers
Recruitment rate - inclusion9 monthsNumber of patients meeting inclusion criteria
Recruitment rate - consent9 monthsPatient consent rate
Adherence to HBOT protocol9 months recruitment + 8 weeks treatmentNumber of Participants received minimum 4 treatments per week with \>35 treatments
Adherence to HBOT protocol - satisfactionAfter last HBOT treatment and at 12 month follow-upSubjective patient satisfaction questionnaire inquiring about HBOT experience, barriers to and promoters of treatment
Feasibility of Clinical Outcome MeasuresUp to 1 year after start of treatmentFeasibility of implementation of clinical outcome scales (PDQ, FSS, SF-36) to be completed at the time of enrollment (baseline), start of treatment (if starting 60 days after enrollment), 4 weeks after the start of treatment, and every 2 months from the first HBOT treatment for 1 year.

Secondary

MeasureTime frameDescription
The impact of HBOT on post COVID-19 condition - PDQUp to 1 year after start of treatmentThe validated clinical deficit scale, Perceived Deficits Questionnaire (PDQ), will be used at the time of enrollment (baseline), start of treatment (if starting 60 days after enrollment), 4 weeks after the start of treatment, and every 2 months from the first HBOT treatment for 1 year
The impact of HBOT on post COVID-19 condition - FSSUp to 1 year after start of treatmentThe validated clinical deficit scale, Fatigue Severity Scale (FSS), will be used at the time of enrollment (baseline), start of treatment (if starting 60 days after enrollment), 4 weeks after the start of treatment, and every 2 months from the first HBOT treatment for 1 year
The impact of HBOT on post COVID-19 condition - SF-36Up to 1 year after start of treatmentThe validated clinical deficit scale, QoL Short Form Survey (SF-36), will be used at the time of enrollment (baseline), start of treatment (if starting 60 days after enrollment), 4 weeks after the start of treatment, and every 2 months from the first HBOT treatment for 1 year.
The impact of time to initiation of HBOT on outcomes following initial infection outcome - PDQUp to 1 year after start of treatmentValidated clinical deficit scales PDQ will be compared with FSS and SF-36 between immediate and delayed start groups
The impact of time to initiation of HBOT on outcomes following initial infection outcome - FSSUp to 1 year after start of treatmentValidated clinical deficit scale FSS will be compared with PDQ and SF-36 between immediate and delayed start groups
The impact of time to initiation of HBOT on outcomes following initial infection outcome - SF-36Up to 1 year after start of treatmentValidated clinical deficit scale SF-36 will be compared with PDQ and FSS between immediate and delayed start groups
Initial infection severity as a mediator of HBOT impact - PDQUp to 1 year after start of treatmentValidated clinical deficit scale PDQ will be compared relative to baseline scores
Initial infection severity as a mediator of HBOT impact - FSSUp to 1 year after start of treatmentValidated clinical deficit scale FSS will be compared relative to baseline scores
Initial infection severity as a mediator of HBOT impact - SF-36Up to 1 year after start of treatmentValidated clinical deficit scale SF-36 will be compared relative to baseline scores
Long-term symptomatic impact at 1 year - PDQ12 month follow-upAssessed using validated clinical deficit scale PDQ at 12 months after start of treatment
Long-term symptomatic impact at 1 year - FSS12 month follow-upAssessed using validated clinical deficit scale FSS at 12 months after start of treatment
Long-term symptomatic impact at 1 year - SF-3612 month follow-upAssessed using validated clinical deficit scales SF-36 at 12 months after start of treatment

Countries

Canada

Contacts

PRINCIPAL_INVESTIGATORFahad Alam, MD

Sunnybrook Health Sciences Centre

PRINCIPAL_INVESTIGATORJordan Tarshis, MD

Sunnybrook Health Sciences Centre

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 3, 2026