Trial of Non-invasive Ventilation for Stable COPD

Not Applicable

Completed

• Conditions: COPD
• Interventions: Device: Bipap (Respironics, Inc)

• Registration Number: NCT01722773
• Lead Sponsor: University of Iowa

Brief Summary

The use of domiciliary non-invasive positive pressure ventilation (NPPV) in stable chronic obstructive pulmonary disease (COPD) with chronic hypercapnic respiratory failure has yielded variable effects on survival, quality of life and dyspnea. The investigators hypothesized that use of NPPV in stable COPD might result in improvement in quality of life and dyspnea.

Detailed Description

Chronic obstructive pulmonary disease (COPD) is associated with progressive decline in lung function with resultant chronic respiratory failure. This leads to significant rates of hospitalization, disability, and death. COPD is also associated with sleep disordered breathing and nocturnal hypoventilation, resulting in nocturnal and daytime hypoxemia and hypercapnia. These, in turn, can contribute to fatigue, dyspnea and impaired quality of life. Presence of hypercapnia is associated with a 33% 5-year survival. Nocturnal NPPV can theoretically rest overloaded respiratory muscles, prevent nocturnal hypoventilation, and reset central respiratory drive in patients with hypercapnia. The use of non-invasive positive pressure ventilation (NPPV) in late stage COPD appears logical to change this inexorable course, to alleviate symptoms and to improve quality of life. While NPPV has a definite role in the management of acute hypercapnic respiratory failure, its role in the management of late stage stable COPD is controversial. Multiple studies have shown no survival benefit for nocturnal NPPV in chronic hypercapnic stable COPD patients. The effects on quality of life and dyspnea scores in such patients have been inconsistent. The variable efficacy might have been due to late administration of the intervention in the course of disease, in the presence of advanced hypercapnic respiratory failure. We sought to assess the effect of applying NPPV on indices of health-related quality of life in patients with relative normocapnia. We hypothesized that patients with stable severe COPD have improved quality of life and reduced dyspnea with the use of NPPV.

Study Timeline

• Study Start: 2001-04
• Primary Completion: 2004-04
• Study Completion: 2004-04
• Status Verified: 2012-11
• Study First Submitted: 2012-11-01
• Study First Submitted QC: 2012-11-05
• Last Update Submitted: 2012-11-05
• Study First Posted: 2012-11-07
• Last Update Posted: 2012-11-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

• stable chronic obstructive pulmonary disease (COPD) defined as forced expiratory volume in the first second (FEV1)/forced vital capacity (FVC) ratio of <0.70, with at least 10 pack-years smoking history

Exclusion Criteria

• congestive heart failure, obstructive sleep apnea, chronic respiratory conditions other than COPD, age < 35 years, any disease limiting life expectancy to less than two years, active malignancy other than non-melanotic skin cancer in the previous two years, and with any anatomic variation or disease process that precluded wearing a nasal mask

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Bipap	Bipap (Respironics, Inc)	Bipap

Primary Outcome Measures

Name	Time	Method
CRDQ	6 months	Chronic Respiratory Disease Questionnaire

Secondary Outcome Measures

Name	Time	Method
NIF	6 months	Negative Inspiratory force
6-minutes walk test	6 months	Walking distances in feet
TDI	6 months	Transitional Dyspnea Index
PO2	6 months	Oxygenation

Trial Locations

Locations (1)

Univeristy of IOwa; 🇺🇸 Iowa City, Iowa, United States