Non-invasive Mechanical Ventilation as a Rescue Therapy to Relieve Dyspnea in Patients With Stable Severe COPD

Chronic Obstructive Pulmonary Disease Clinical Trial

Official title: The Efficacy of Non-invasive Mechanical Ventilation as a Rescue Therapy for Relieving Dyspnea in Patients With Stable Severe COPD

Status Completed

Clinical Trial Summary

The purpose of this study is to determine whether non-invasive mechanical ventilation(NIV), playing the role as a rescue therapy , are effective in relieving exertional dyspnea in stable severe COPD patients.

Clinical Trial Description

Chronic obstructive pulmonary disease(COPD) is a preventable and treatable illness, which is clinically characterized by persistent airflow limitation that is usually progressive. It's well known that airflow limitation lead to air trapping particularly during exercise, resulting in increased dyspnea and limitation of exercise capacity. Thus, COPD patients often unconsciously adopt a sedentary lifestyle, probably due to distressing exertional dyspnea. The sedentarism results in physical deconditioning and alterations of the peripheral muscles, and the latter one causes more exertional dyspnea and fatigue, which in turn leads to much more sedentarism, forming the vicious cycle of sedentarism, dyspnea/fatigue and more sedentarism. Thereby, measures should be taken to interrupt this vicious cycle. Some previous studies suggested that niv acting as an add-on therapy could help unloading the inspiratory muscle, reducing the dynamic compression of the airway, diminishing the dynamic hyperinflation,to some extent, relieved dyspnea during exercise in COPD patients. However,those measures were taken during exercise, acting as an add-on therapy. Whether NIV can play a role as a rescue therapy to relieve exertional dyspnea while the patients are already undergoing optimal treatment with bronchodilator and anti-inflammatory medication is still not quite clear. Therefore, we hypothesize that niv as a rescue-therapy has the same effect on relieving dyspnea in stable severe COPD patients just like the add-on therapy. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Chronic Obstructive Pulmonary Disease
• Lung Diseases, Obstructive
• Pulmonary Disease, Chronic Obstructive

• NCT number: NCT02012101
• Study type: Interventional
• Source: Guangzhou Institute of Respiratory Disease
• Status: Completed
• Phase: N/A
• Start date: March 2013
• Completion date: April 2014