22 Clinical Trials for Various Conditions
The purpose of this prospective randomized clinical trial is to evaluate three different types of hyperinflation respiratory therapies, Intermittent Positive Pressure Breathing (IPPB), Intermittent positive end expiratory pressure (EzPAP), Metaneb. Investigators will examine which hyperinflation therapy provides better lung expansion and may improve lung recovery after surgery.
The goal of this study is to evaluate the acute effects of a long-acting bronchodilator on pulmonary function, vascular function and muscle sympathetic nerve activity in individuals with COPD. Individuals will be recruited from previous pulmonary research cohorts at The University of Iowa hospitals and clinics. Individuals that are interested in the study and are deemed eligible to participate will have a total of 3 visits to the laboratory, which includes the screening and consent (visit 1) that will last approximately 1 hour. Visits 2 and 3 are experimental visits and will be more extensive (\~4 hours). Participants will be randomized to receive either a long-acting bronchodilator or a placebo inhaler at the first experimental visit, followed by either the placebo inhaler or the long-acting bronchodilator at the second experimental visit. Assessments of pulmonary function, vascular function (via non-invasive, well-established techniques), and muscle sympathetic nerve activity will be performed at both experimental visits.
The purpose of this study is to determine if dynamic hyperinflation seen in patients with idiopathic pulmonary artery hypertension (iPAH) improves with albuterol therapy.
This is an early feasibility study to investigate whether transcutaneous electrical stimulation applied to the abdominal wall muscles synchronous with voluntary exhalation can be used to support ventilation and affect hyperinflation in patients with chronic obstructive pulmonary disease. As part of this study, the effect of a range of stimulation intensities and stimulation timing profiles will be explored.
The purpose of this study is to investigate the role of the pulmonary vasculature in the development and progression of chronic obstructive pulmonary disease (COPD). To accomplish this, an inhaled prostacyclin (iloprost) will be given to patients with COPD and changes in oxidative stress and lung volumes during exercise will be measured.
The primary objective of this trial is to investigate the effect of 6 weeks treatment with tiotropium + olodaterol fixed dose combination inhalation solution on lung hyperinflation and exercise tolerance in patients with COPD.
The primary objective of this trial is to investigate the effect of 6 weeks treatment with tiotropium + olodaterol fixed dose combination inhalation solution on lung hyperinflation and exercise tolerance in patients with COPD
The purpose of this study is to demonstrate the safety and efficacy of AeriSeal System treatment plus optimal medical therapy compared in patients with advanced upper lobe predominant (ULP) heterogeneous emphysema.
This study will compare the effects of exercise training and breathing retraining (using metronome tones) to exercise training only. Exercise training lasts 12 weeks.
We will detect dynamic hyperinflation (DH) in 40 COPD (chronic obstructive pulmonary disease) patients with moderately severe disease using metronome paced hyperventilation (MPH) with inspiratory capacity as the primary end point. Hypothesis: Is tiotropium capable of lung volume protecting inspiratory capacity from MPH induced DH vs placebo in a randomized crossover double blinded study.
This study evaluated the effect of inhaled aclidinium bromide on exercise endurance and in reducing resting and dynamic lung hyperinflation in patients with moderate to severe COPD. It was 9 weeks in duration, consisting of; a 2-week run-in period, 6 weeks of double-blind treatment, and a 1-week follow-up phone call. All patients meeting the eligibility criteria were randomized to one of two treatment groups: aclidinium bromide or placebo.
This study will investigate the utility of 4D Medical's X-ray Velocimetry (XV) imaging analysis software for the detection of hyperinflation, and compare endobronchial valve placement outcomes with predictive indices obtained utilizing this technique.
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.
The goal of this study is to evaluate the sensitivity and specificity of Electrical Impedance Tomography (EIT) as a bedside diagnostic tool for lung pathologies in patients who are mechanically ventilated. In electrical impedance tomography low amplitude, low frequency current is applied on electrodes, and the resulting voltage is measured and used to computed the electrical properties of the interior of the chest as they change in time. The computed properties are used to form an image, which can then be used for monitoring and diagnosis.
Although drug therapies and pulmonary rehabilitation have greatly improved COPD symptoms, as many as 50% of patients with severe COPD have inadequately controlled dyspnea. Device-guided breathing is a behavioral intervention that guides respiratory rates into a therapeutic range; prolongation of the expiratory phase improves hyperinflation, the most significant driver of dyspnea in this population. Device-guided breathing, has no known side-effects, and may represent a cost effective adjunctive treatment for dyspnea in severe COPD.
The objective of this study is to assess the safety and efficacy of Apreo BREATHE system when used to support native airways and release trapped air in the treatment of adult COPD patients with emphysema suffering from dyspnea due to hyperinflation despite optimal medical treatment. The Apreo BREATHE Airway Scaffold is a permanent implant designed to tent open native airways. The study will include up to 250 participants at up to 25 study centers located in the United States and Europe. Study subjects will be followed for 3 years. The main questions it aims to answer are: Is it safe? Does it work?
This is a prospective, open-label, multi-center, single-arm study planned to enroll 200 subjects with heterogeneous emphysema and collateral ventilation (CV) in the target lobe. Subjects will undergo instillation of AeriSeal Foam in the target lobe and subsequent assessment of CV status using Chartis Pulmonary Assessment System. Subjects with CV- status will then undergo placement of Zephyr Valve in the target lobe for bronchoscopic lung volume reduction (BLVR) and be followed for 24 months.
This is an international clinical research study evaluating the safety and effectiveness of a new procedure called airway bypass. The goal of this research is to see if airway bypass can relieve hyperinflation (overfilling) of the lungs, thereby improving lung function and reducing shortness of breath in patients with severe homogeneous (diffuse) emphysema. "EASE" stands for Exhale Airway Stents for Emphysema.
This trial is an investigator initiated study involving the use of the AstraZenica Aerophere Inhaler (Glycopyrrolate/Formoterol) to determine the effect on exercise tolerance and dynamic hyperinflation in patients with chronic obstructive lung disease.
People with moderate to severe COPD trap air in their lungs. This lessens their ability to exercise. The investigators developed a computerized breathing retraining program to help patients empty their lungs during exercise. The investigators believe that learning to control breathing will help patients be more active. The purpose of this study is to test the effects of using breathing retraining (intervention group) versus no breathing retraining (control group) as part of a 12-week exercise program. The investigators are examining the long term effects of this training on exercise capacity and the ability to empty ones lungs during exercise. Patients will participate in a 12-week exercise program, with or without breathing retraining. They will then participate in a 42 week adherence program to maintain physical activity. Patient testing will be competed at baseline, 12 weeks, 6 months and 1 year. 250 patients with moderate to severe COPD will be enrolled.
The purpose of this study is to determine if Advair Diskus improves sleep quality by reducing lung hyperinflation in COPD.
To evaluate if tiotropium (Spiriva)induced bronchodilation of inspiratory capacity in patients with moderate to severe copd subjected to metronome paced hyperventilation induced dynamic hyperinflation is dependent upon the extent of underlying emphysema as determined by high resolution-thin section CT lung.