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Clinical Study of Intermittent Positive Pressure Breathing (IPPB)

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ClinicalTrials.gov Identifier: NCT00000565
Recruitment Status : Completed
First Posted : October 28, 1999
Last Update Posted : April 14, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To evaluate the efficacy of long-term intermittent positive pressure breathing (IPPB) treatment when used as an adjunct to the overall care of ambulatory outpatients with chronic obstructive pulmonary disease. The evaluation compared the use of IPPB with use of a powered nebulizer.

Condition or disease Intervention/treatment Phase
Lung Diseases Lung Diseases, Obstructive Chronic Obstructive Pulmonary Disease Procedure: intermittent positive-pressure breathing Phase 3

Detailed Description:


Intermittent positive pressure breathing may be a useful adjunct therapy for patients with chronic obstructive pulmonary disease. It is, however, quite expensive; moreover, in 1976 its treatment efficacy had not been determined. Although the effectiveness of IPPB had been previously studied, the influence of long-term treatment was not known for the following reasons: The individuals studied had been too few and were not randomly assigned to treatment groups, the patient groups were not homogeneous and their clinical and functional status were not well-documented, and precise descriptions of the manner in which IPPB was administered were not recorded.

Based on these facts, a conference on the Scientific Basis of Respiratory Therapy, co-sponsored by the American Thoracic Society and the Division of Lung Diseases, issued a recommendation to develop a controlled clinical study of IPPB. Contracts were awarded to five clinical centers and a data center in November 1976. Planning of the trial ended in November 1977. Recruitment began in April 1978 for the 985 individuals who took part in this trial and ended in October 1980. Patients enrolled after March 31, 1980, were followed for 30 months instead of 36 months. Follow-up was completed in May 1983.


Randomized, fixed sample of 985 patients. Eligible patients were assigned to a treatment group using intermittent positive pressure breathing or to a control group using a powered nebulizer for treatment 3-4 times a day. Treatments continued for 3 years. Endpoints related to quality of life and respiratory function and capability.

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Study Type : Interventional  (Clinical Trial)
Allocation: Randomized
Primary Purpose: Treatment
Study Start Date : November 1976

Resource links provided by the National Library of Medicine

Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 74 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Men and women, ages 30 to 74, who were ambulatory and had symptomatic chronic bronchitis or emphysema.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00000565

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
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OverallOfficial: Nicholas Anthonisen University of Manitoba
OverallOfficial: John Hodgkin Loma Linda University Medical Center
OverallOfficial: Philip Hopewell San Francisco General Hospital
OverallOfficial: David Levin University of Oklahoma
OverallOfficial: Paul Stevens Baylor College of Medicine
OverallOfficial: Elizabeth Wright George Washington University
Study Data/Documents: Individual Participant Data Set  This link exits the ClinicalTrials.gov site
Identifier: IPPB
NHLBI provides controlled access to IPD through BioLINCC. Access requires registration, evidence of local IRB approval or certification of exemption from IRB review, and completion of a data use agreement.

National Heart, Lung, and Blood Institute, Division of Lung Diseases: Protocol for Intermittent Positive Pressure Breathing Collaborative Program. Bethesda, Maryland: National Institutes of Health, 1978.
Hodgkin JE and Zorn EG: Intermittent Positive Pressure Breathing (IPPB) in the Outpatient Management of Chronic Obstructive Pulmonary Disease (COPD): Description of the NIH Clinical Trial. Respiratory Care, 26:1095-1104, 1981.
Intermittent Positive Pressure Breathing Trial Group. (Letter). Ann Intern Med, 100:458, 1984.

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ClinicalTrials.gov Identifier: NCT00000565    
Other Study ID Numbers: 203
First Posted: October 28, 1999    Key Record Dates
Last Update Posted: April 14, 2016
Last Verified: May 2002
Additional relevant MeSH terms:
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Lung Diseases
Lung Diseases, Obstructive
Pulmonary Disease, Chronic Obstructive
Respiratory Tract Diseases