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Chronic Obstructive Pulmonary DiseaseAIRVO-PHYSIONCT04014868

During-exercise Physiological Effects of Nasal High-flow in Patients With Chronic Obstructive Pulmonary Disease

A study testing Nasal high-flow in people with Chronic Obstructive Pulmonary Disease, run by ADIR Association at 1 site in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Chronic obstructive pulmonary disease is a major cause of disability and mortality worldwide. This disease progressively leads to dyspnea and exercise capacity impairment. Pulmonary rehabilitation teaches chronic obstructive pulmonary disease patients to cope effectively with the systemic effects of the disease and… Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Chronic Obstructive Pulmonary Disease
What is being tested?
Nasal high-flow
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
14 participants
Where
1 siteFrance
Study dates
22 Nov 2019to 10 Oct 2021
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age > 18years and < 80years;
  • Chronic obstructive pulmonary disease Gold III-IV;
  • Stable (no exacerbation) in the past 4 weeks;
  • Referred for pulmonary rehabilitation (no cardiac, neurological, orthopedic, neuromuscular, psychological or psychiatric contra indication).
  • Non-inclusion Criteria:
  • Acute exacerbation of chronic obstructive pulmonary disease between the incremental cardiopulmonary exercise testing and inclusion;
Show all 11Show fewer
  • Tracheostomy;
  • Nasal high flow intolerance;
  • Pregnancy or likely to be;
  • Unable to consent;
  • Patients under guardianship.

Who cannot join

None listed.

Trial locations and contacts

1 site in 1 country.

France1 site
  • ADIR Association

    Bois-Guillaume, 76230

Other trials in France

About this study

Chronic obstructive pulmonary disease is a major cause of disability and mortality worldwide. This disease progressively leads to dyspnea and exercise capacity impairment. Pulmonary rehabilitation teaches chronic obstructive pulmonary disease patients to cope effectively with the systemic effects of the disease and improves exercise capacity, dyspnea and quality of life in patients with chronic obstructive pulmonary disease. However, the best training modality remains unknown. Physiological studies highlight the benefit of high intensity endurance training. However, many patients do not tolerate such a training due to ventilatory limitation and dyspnea. Therefore, a strategy to reduce dyspnea would allow a greater physiological muscle solicitation and improvement. Thus, many studies focus on means to increase exercise tolerance in patients with chronic obstructive pulmonary disease.

Nasal high flow delivers heated and humidified high flow air (up to 60 L/min) through nasal cannula providing physiological benefits such as positive airway pressure and carbon dioxide washout. It can be used in association with oxygen and offers the advantage to overtake the patient's inspiratory flow, providing a stable inspired fraction of oxygen. Nasal high flow has widely been studied in pediatric and adult intensive care units and seems better than conventional oxygen therapy and as effective as noninvasive ventilation with regards to mortality to treat hypoxemic acute respiratory failure.

Read more

More recently, nasal-high flow has been shown to improve endurance exercise capacity in patients with chronic obstructive pulmonary disease. However, the underlying physiological mechanisms have not been yet elucidated but may help to optimise the utilization of the device.

Therefore, the primary objective of this study is to assess the respiratory physiological effects nasal high-flow during-exercise in stable patients with chronic obstructive pulmonary disease.

Secondary objectives are to assess the effects nasal high-flow during-exercise on endurance capacity, respiratory drive, dynamic hyperinflation, cardiorespiratory pattern and muscular metabolism.

Read the detailed description

Experimental design:

Patients referred for pulmonary rehabilitation will be approached to participate in this study. Eligible patients who agree to participate in the study and sign informed consent will perform two constant workload exercise testing the same day with either nasal high-flow or sham nasal high-flow (separated by a 1 hour rest-period) in a randomized order.

Being tested
Nasal high-flow, Sham nasal high-flow
Keywords
Chronic obstructive pulmonary disease, Exercise, Nasal high flow, Muscle
Medical subject headings
Pulmonary Disease, Chronic Obstructive, Motor Activity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Nasal high-flowDevice

    See arm description.

  • Sham nasal high-flowOther

    See arm description.

Study groups in NCT04014868
Study groupRoleWhat they receive
Nasal high-flowExperimentalPatients will perform a constant workload exercise testing (75% of the maximal workload achieved during a previously performed incremental cardiopulmonary exercise testing) with active nasal high-flow : Flow : 30 L/min; Temperature : 34°C; The device will be out of sight of the patient. The device allow for oxygen supplementation (fitting on the back of the device). Usual oxygen prescription (if any) will be adjusted to reach a transcutaneous oxygen saturation superior to 90%. A second fitting will be placed just before the nasal canula to allow for oxygen supplementation during the sham nasal high-flow (device turned OFF) test. Due to the cross-over design of the study, all patients will perform both interventions.
Receives: Device: Nasal high-flow
Sham nasal high-flowSham comparatorPatients will perform a constant workload exercise testing (75% of the maximal workload achieved during a previously performed incremental cardiopulmonary exercise testing) with a sham nasal high-flow : The procedure will be exactly the same but the device (out of sight of the patient) will be turned OFF. Oxygen supplementation will be possible through the fitting placed just before the nasal canula. Due to the cross-over design of the study, all patients will perform both interventions.
Receives: Other: Sham nasal high-flow

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Transdiaphragmatic pressure-time product using a single-use catheter with two balloons to measure gastric and esophageal pressures.

    Transdiaphragmatic pressure is calculated as gastric pressure minus oesophageal pressure. The outcome will be continuously recorded during the two constant workload exercise testing. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be continuously recorded during the two constant workload exercise testing. The 2 tests will be performed the same day for a total time frame of 3hours.

Secondary outcomes (8)
  1. Ventilatory drive using diaphragmatic electromyogram through the same single-use catheter used for transdiaphragmatic pressure (which is provided with 6 pairs of electrodes).

    Diaphragmatic electromyography will be recorded with 6 pairs of electrodes and will be used as a surrogate for ventilatory drive. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be continuously recorded during the two constant workload exercise testing. The 2 tests will be performed the same day for a total time frame of 3hours.

  2. Ventilatory efficiency using indirect calorimetry

    Ventilatory efficiency will be assessed as the ratio between exercise ventilation to carbon dioxide production. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be continuously recorded during the two constant workload exercise testing. The 2 tests will be performed the same day for a total time frame of 3hours.

  3. Dynamic hyperinflation using the fall in during-exercise inspiratory capacity

    Maximal inspiratory maneuver will be performed every minute during the two constant workload exercise testing. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be recorded during the two tests. The 2 tests will be performed the same day for a total time frame of 3hours.

  4. Transcutaneous arterial carbon dioxide partial pressure using capnography.

    The outcome will be measured at the earlobe. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be continuously recorded during the two constant workload exercise testing. The 2 tests will be performed the same day for a total time frame of 3hours.

  5. Dyspnea during the constant workload exercise testing using modified Borg scale (0-10).

    Borg scale range from 0 (no breathlessness) to 10 (maximal breathlessness). The dyspnea will be assessed every 30sec during the constant workload exercise testing. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be recorded during the two tests. The 2 tests will be performed the same day for a total time frame of 3hours.

  6. Vastus lateralis muscle peripheral perfusion during exercise using near infrared spectroscopy.

    The outcome will be assessed every minute. Peripheral muscle perfusion will be assessed using the linear increase in total haemoglobin and myoglobin during a venous occlusion (20 seconds) and used as a surrogate for local blood perfusion. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be recorded during the two tests. The 2 tests will be performed the same day for a total time frame of 3hours.

  7. Vastus lateralis muscular peripheral oxygen extraction during exercise using near infrared spectroscopy.

    The outcome will be assessed continuously. Vastus lateralis muscle oxygen extraction will be assessed using deoxyhaemoglobin and deoxymyoglobin as a surrogate for peripheral oxygen extraction. Results will be shown at time limit and iso time (defined as time limit of the shortest test).

    Measured: The outcome will be recorded during the two tests. The 2 tests will be performed the same day for a total time frame of 3hours.

  8. Endurance exercise capacity in seconds.

    Patients will perform a constant workload exercise testing at 75% of the maximal workload achieved during the incremental cardiopulmonary exercise testing.

    Measured: The outcome will be measured after every test. Data will be continuously collected during the tests. The 2 tests will be performed the same day for a total time frame of 3hours.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Jul 2019
  2. Study start22 Nov 2019
  3. Primary completion1 Oct 2021
  4. Study completion10 Oct 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Model description
Single-blind randomized cross-over study.
Masking
Single blind
Who is masked
Participant
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04014868
Sponsor's protocol ID
AIRVO-PHYSIO
Acronym
AIRVO-PHYSIO
Status last verified
Mar 2022
First submitted
8 Jul 2019
Last updated
17 Mar 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Nasal high-flow in people with Chronic Obstructive Pulmonary Disease, run by ADIR Association at 1 site in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Mar 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Transdiaphragmatic pressure-time product using a single-use catheter with two balloons to measure gastric and esophageal pressures. (time frame: The outcome will be continuously recorded during the two constant workload exercise testing. The 2 tests will be performed the same day for a total time frame of 3hours.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Mar 2022.

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