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Effect of High Levels of Oxygen and Smoking on the Lungs in Human Volunteers

NCT00001464 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 77

Last updated 2021-08-27

No results posted yet for this study

Summary

Patients with lung disease experiencing difficulty breathing can be treated with oxygen therapy. This involves the delivery of "extra" oxygen by a face-mask or through small tubes placed in the nose called nasal prongs. This extra oxygen can have concentrations as high as 100% pure oxygen. The concentration of oxygen in normal air is only 21%. The high concentration of oxygen can help to provide enough oxygen for all of the organs in the body. Unfortunately, breathing 100% oxygen for long periods of time can cause changes in the lungs, which are potentially harmful. Researchers believe that by lowering the concentration of oxygen therapy to 40% patients can receive it for longer periods of time without the risk of side effects.

This study is designed to evaluate the effects of oxygen therapy at 100% and 40% for 12 18 hours on the lungs of normal volunteers. Results of this study will help to determine if levels of oxygen therapy currently accepted as being "safe" may actually be damaging to the lungs.

Conditions

  • Healthy Volunteers

Sponsors & Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)

    lead NIH

Principal Investigators

  • Joel Moss, M.D. · National Heart, Lung, and Blood Institute (NHLBI)

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
1995-08-22
Primary Completion
2007-07-10
Completion
2007-07-10

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00001464 on ClinicalTrials.gov