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CompletedNCT00592033Updated Mar 22, 2012

Effect of Oxygen in Normoxaemic COPD Patients Who Desaturate During Exercise

A Phase 4 interventional study of oxygen from a portable concentrator in COPD, sponsored by Hvidovre University Hospital. Completed at 1 site in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2012-03-22.

Sponsored by Hvidovre University Hospital · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
45
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

In COPD patients with desaturation during exercise, several studies have shown an acute beneficial effect of supplemental oxygen. Therefore, both the British Thoracic Society and the American Thoracic Society guidelines recommend supplemental oxygen to patients who desaturate >4% and to below 88-90%. However, long-term studies have not been able to support this intervention. In this study of COPD patients, who desaturate and participate in a 7-week pulmonary rehabilitation programme, we examine the effect of supplemental oxygen on exercise tolerance, health status, and exacerbation rates. In a randomised design patients trained either with room air or with 2 litres oxygen per minute from a portable oxygen concentrator. All patients were asked to exercise every day for 30 minutes.

Read the detailed description

In COPD patients with desaturation during exercise, several studies have shown an acute beneficial effect of supplemental oxygen. Therefore, both the British Thoracic Society and the American Thoracic Society guidelines recommend supplemental oxygen to patients who desaturate >4% and to below 88-90%. However, long-term studies have not been able to support this intervention. In this study of COPD patients, who desaturate and participate in a 7-week pulmonary rehabilitation programme, we examine the effect of supplemental oxygen. Using a randomised design, patients trained either with room air (control) or with 2 litres oxygen per minute from a portable oxygen concentrator. All patients were asked to exercise every day for 30 minutes.

Primary effect parameters:

endurance shuttle walk time at baseline, 7 weeks (after intensive supervised rehabilitation), 3 months (after maintenance training twice a month), and after 6 months.

Secondary effect parameters:

St. George Respiratory Questionnaire (health status); usage of oxygen, exacerbations requiring medical treatment, hospitalisation and mortality in the same periods.

02

Conditions studied

  • COPD

Keywords

  • COPD oxygen
  • COPD rehabilitation
  • exercise
03

In context

Pulmonary Disease, Chronic Obstructive

4,252 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 707 are open to participants now.

This study's enrollment of 45 is below the median of 70 across 3,008 interventional studies indexed under Pulmonary Disease, Chronic Obstructive.

Browse Pulmonary Disease, Chronic Obstructive studies →

Lead sponsor

Hvidovre University Hospital is the lead sponsor of 299 studies on the registry; 20 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • COPD
  • participate in a 7-weeks pulmonary rehabilitation programme
  • desaturate >4% to less than 90% during endurance shuttle walk test

Exclusion criteria

Exclusion Criteria:

  • long-term oxygen therapy
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
45 participants (actual)

Study arms

  • No intervention
    2

    Rehabilitation, no supplemental oxygen

  • Experimental
    1

    Rehabilitation plus supplemental oxygen

    Other: oxygen from a portable concentrator

Interventions

  • Otheroxygen from a portable concentrator

    2 l/minute during exercise

06

What researchers measure

Primary outcomes

  1. Shuttle walk (endurance time)

    Time frame: 7 week, 3 and 6 months

Secondary outcomes

  1. St. George Respiratory Questionnaire

    Time frame: 7 week, 3 and 6 months

  2. Usage of oxygen concentrator (Spent time according to the meter)

    Time frame: 7 weeks, 3 and 6 months

  3. Exacerbations requiring medical treatment (prednisolone or antibiotics)

    Time frame: 7 weeks, 3 and 6 months

  4. Hospitalisation

    Time frame: 7 weeks, 3 and 6 months

  5. Mortality

    Time frame: 7 weeks, 3 and 6 months

07

Study locations

1 site
  • University Hospital, Hvidovre, Cardio-pulmonary depart.
    Hvidovre, 2650, Denmark
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of May 2007, a primary completion of Dec 2011 and a completion of Dec 2011. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 31, 2007
First posted
Jan 11, 2008
Start
May 2007
Primary completionActual
Dec 2011
CompletionActual
Dec 2011
Last update
Mar 22, 2012
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 22, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00592033
Collaborators
Danish Lung Association
Responsible party
Thomas Ringbaek (Senior Consultant, Hvidovre University Hospital) — Principal investigator
First posted
Jan 11, 2008
Start date
May 2007
Primary completion
Dec 2011
Completion
Dec 2011
Last update
Mar 22, 2012

Study contacts

Thomas J Ringbaek, doctor
principal investigator · Hvidovre Hospital, University hospital, Cardio-pulmonary depart.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2012. You cannot join it, but the record below documents what was studied.

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