Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Could breathing different gases clear long COVID brain fog?

NCT ID NCT06614309

Symptom relief Sponsor: Mayo Clinic Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This Mayo Clinic pilot study tests whether breathing controlled levels of oxygen or carbon dioxide can help people with Long COVID brain fog. 45 participants will try short sessions of these gas mixtures and report changes in brain fog, fatigue, and blood flow. The goal is to see if this non-invasive approach is worth studying further.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
breathing controlled levels of oxygen and carbon dioxide
What this could lead to
If it works, this could point toward a simple, non-invasive way to reduce brain fog and fatigue in people with Long COVID.
What could go wrong
This is a very early pilot study with only 45 people. The treatment is experimental and may not improve symptoms. Some people may feel discomfort from the gas mixtures.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 45 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion criteria: * English speaking * Diagnosis of Long COVID Exclusion criteria: * Any history of: * Coronary artery dissection or aortic dissection * Neurological disease (e.g. dementia, Alzheimer's disease, or other brain-related disease) * Cerebrovascular disease or stroke * Aneurysm * If currently has: * Moderate-severe chronic obstructive pulmonary disease * Uncontrolled moderate-severe asthma * Moderate-severe bronchiectasis * Moderate-severe interstitial lung disease, requiring the use of supplemental oxygen * A necessity to use supplemental oxygen, for any reason * New or worsening symptoms (decompensation) of heart failure * Right heart disease due to chronic pulmonary disease/sleep apnea * Uncontrolled myocardial ischemia or angina * Uncontrolled heart arrhythmias * Heart or lung infection (e.g. myocarditis or pericarditis) * Left main coronary artery stenosis * Moderate-severe aortic stenosis * Pulmonary embolism, pulmonary infarction, or other blood clots * Severe respiratory disease * Chronic kidney disease * Chronic liver disease * Females of childbearing potential will complete a urine pregnancy test at their baseline visit to rule out pregnancy * BMI \>40 * Study staff unable to obtain adequate signal for cerebral blood flow

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Long COVID are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

Fatigue long COVID-19 Mental Fatigue

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Long COVID

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Mayo Clinic in Arizona

    RECRUITING

    Scottsdale, Arizona, 85259, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.