Comparing oxygen levels during pulmonary rehabilitation for chronic respiratory failure

Effect of Pulmonary Rehabilitation Under Different Oxygen Concentration Using High-flow Nasal Cannula

Not applicable Interventional National Hospital Organization Minami Kyoto Hospital · NCT04481295

This study tests whether using higher or lower oxygen levels during exercise rehab helps people with chronic respiratory failure perform better and feel better overall.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment32 (estimated)
Ages20 Years to 90 Years
SexAll
SponsorNational Hospital Organization Minami Kyoto Hospital Academic / other
Locations1 site (Joyo, Kyoto)
Trial IDNCT04481295 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the effects of different oxygen saturation levels on exercise capacity in patients with chronic respiratory failure undergoing pulmonary rehabilitation. Participants will be randomized to receive either high oxygen saturation (94-96%) or low oxygen saturation (84-86%) during their rehabilitation sessions. The goal is to determine which oxygen level optimally supports exercise performance and overall rehabilitation outcomes. The study focuses on patients who have been on long-term oxygen therapy for more than three months.

Who should consider this trial

Good fit: Ideal candidates for this study are patients with chronic respiratory failure who have been receiving long-term oxygen therapy for over three months.

Not a fit: Patients with severe cardiovascular, liver, neurological diseases, or recent exacerbations of respiratory failure may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could help optimize pulmonary rehabilitation protocols, leading to improved exercise capacity and quality of life for patients with chronic respiratory failure.

How similar studies have performed: While there have been studies on pulmonary rehabilitation, this specific comparison of oxygen saturation levels during rehabilitation is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects with chronic respiratory failure receiving long-term oxygen therapy for more than 3 months.

Exclusion Criteria:

* Subjects with severe cardiovascular disease, liver disease, neurological disease, and renal failure.
* Subjects with a history of hospitalization for pneumonia or exacerbation of respiratory failure within the last month.
* Subjects with changes in LTOT prescription flow within the last month
* Subjects who cannot undergo pulmonary rehabilitation due to severe heart failure, arteriosclerosis obliterans or spinal disease.

Where this trial is running

Joyo, Kyoto

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions High-flow Nasal CannulaExercise CapacityChronic Respiratory FailureOptimal SpO2 ValueHFNC6MWD
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.