Clinical Research Directory

A Study to Investigate the Effect of Budesonide/Glycopyrronium/Formoterol Fumarate Metered Dose Inhaler (BGF MDI) Compared With Placebo MDI on Heart and Lung Function in Participants With Chronic Obstructive Pulmonary Disease (COPD) and Hyperinflation

The purpose of the study is to evaluate the effect of BGF MDI compared with placebo MDI on cardiac and lung function when administered in participants diagnosed with COPD and hyperinflation.

Secondhand Smoke Respiratory Health Study

Exposure to secondhand tobacco smoke (SHS) is associated with diverse health effects in nonsmokers. Flight attendants (FA) who worked on commercial aircraft before the ban on tobacco smoking (exposed FAs) had high, long-term levels of occupational exposure to SHS and are a unique population for the study of long-term health effects of chronic exposure to SHS. In previous studies, we have shown that many never-smoking SHS-exposed FAs to have curvilinear flow-volume loops, decreased airflow at mid- and low-lung volumes, and static air trapping (elevated residual volume to total lung capacity ratio \[RV/TLC\]), abnormalities that are not diagnostic of overt Chronic Obstructive Pulmonary Disease (COPD), but do implicate the presence of an obstructive ventilatory defect, and are consistent with what has been recently described as preserved ratio impaired spirometry (PRISm). The main objective of the study is to determine the effect of a bronchodilator to counter the physiologic abnormalities that are observed in the population of never-smoking SHS-exposed FAs as both proof of concept of the presence of an obstructive lung disease and as a possible therapeutic option to counteract the adverse respiratory effects of chronic exposure to SHS.

Effect of Elastic Chest Compression on Functional Exercise Capacity and Respiratory Performance in Patients With COPD

The goal of this clinical trial is to investigate the effects of elastic chest compression on functional exercise capacity and respiratory performance of patients with COPD. The main questions it aims to answer are: Is there difference in functional exercise capacity and respiratory performance without or with the use of elastic upper chest compression? Is there difference in functional exercise capacity and respiratory performance between the use of elastic upper chest compression and elastic lower chest compression? Participants will: Be evaluated under three conditions on three different days: without elastic compression, with upper chest compression, and with lower chest compression, with the order of compression application randomly assigned. The functional capacity and respiratory muscle performance of all patients will be evaluated. The days for evaluation will be at least three days apart from each other.