View clinical trials related to Lung Diseases, Obstructive.
Filter by:In this study the investigators aim to investigate the extent to which in patients with chronic obstructive pulmonary disease narrowing of the vocal cords causes a positive pressure within the airways thus improving airflow and lung function. This information will be captured in the upright and lying down positions and an estimate of the magnitude of the effect will be formed by offsetting the pressure by asking the patients to breathe using a commercially available device used to treat sleep apnoea called a CPAP machine. This is an observational study in which the observation of laryngeal aperture, and mouth and oesophageal pressure at differing levels of applied CPAP will be recorded for analysis in patients with COPD and in normal subjects without COPD. All will have the same measurements, observations, and interventions to allow us to observe and measure pressure, laryngeal aperture, and airflow .
The primary aim of this study is to investigate the incidence of falling in a cohort of patients with chronic obstructive pulmonary disease (COPD) referred to a pulmonary rehabilitation program and to verify the risk factors. The secondary aim is to verify whether available balance assessment tools are feasible in clinical practice and which tools and values can best predict falls in people with COPD.
For patients with emphysema, lung volume reduction by insertion of endobronchial valves could be an expedient approach to improve the diaphragm function and the strength of breathing muscles. Therefore in the present study investigators intend to examine, whether the lung volume reduction by valves might improve the physical capacity and the quality of life.
Most daily activities involve alternating periods of exercise and rest. If recovery is slow following exercise it means that the next period of activity may be more difficult and the COPD patients becomes restricted in their daily life. Therefore, the investigators are interested to study the effectiveness and physiological effects of breathing with a PEP device during post-exercise period and hypothesize that 1. Post-exercise breathing with PEP device will increase the rate of recovery more than breathing without PEP device. 2. Post-exercise breathing with PEP device will not create harmful effects on cardiopulmonary function in COPD patients.
To estimate prevalence of chronic obstructive pulmonary disease (COPD) in cardiac surgery population and establish links between COPD status, as assessed through pulmonary functional tests, and 2-year mortality
Acute exacerbation of chronic obstructive pulmonary disease (COPD) is associated with poor outcome, especially when intubation is required, thus underlining the importance of optimizing non-invasive ventilatory support to avoid intubation. Practically, because of treatment intolerance, non-invasive ventilation (NIV) cannot be administered 24-hour a day for a long period of time and alternative solutions must be found to deliver oxygen as efficiently as possible to allow NIV interruptions. High flow humidified oxygen therapy (HFHO) consists of delivering a high-flow (15-60 L/minute) heated air-oxygen mixture (FIO2 21-100%) through a dedicated nasal cannula and can be interesting in this context. This well tolerated technique improves oxygenation and decreases respiratory rate and dyspnea in patients suffering from acute hypoxemic respiratory failure. In chronic COPD patients, using HFHO can decrease respiratory rate and PaCO2. In COPD exacerbation, using HFHO can conceptually be interesting. First, the high air-oxygen flow delivered well matches the patient's inspiratory demand and should decrease the work of breathing. Second, as during HFHO a high flow is continuously delivered in the airways, a wash-out of the anatomical dead space should occur and CO2 clearance should be enhanced. Despite this strong physiological rational for the use of HFHO in patients suffering from COPD exacerbation, the effects of using HFHO instead of conventional oxygenotherapy in combination with non-invasive ventilation (NIV) in this context has never been explored. The main objective of the study is to explore the effects of using HFHO in combination with NIV in acute COPD exacerbation and to assess the underlying mechanisms of action.
It is still not clearly known whether doing the walk test in a course is different from doing it on a treadmill in the lack of a ten-meter-long corridor. In case of a positive outcome in this study, we will have an alternative for this test in places where there is not enough room, benefiting the assessment of COPD patients' functional capacity. In the literature, there are still some controversies about performing the test on a treadmill or in a corridor and whether there is interference with the distance walked. Our hypothesis is that there is no interference with the distance walked, and thus we have one more option to perform the test in case there is no 10-meter corridor available.
The purpose of this study is to determine the impact that treatment with a cellular concentrate derived from an individual's own fat, known as the stromal vascular fraction (SVF), has on the quality of life of people with chronic obstructive pulmonary disease (COPD). SVF contains multiple cellular components, including stem cells, with both regenerative and anti-inflammatory properties. This therapy has shown promise for ameliorating the symptoms of COPD. This study is designed to evaluate quality of life changes in individuals with COPD for up to 12 months following SVF treatment.
A single center case-control study with 100 COPD patients will be organized to compare patients with and without bronchiectasis with regard to the presence of Aspergillus in sputum samples, Aspergillus sensitization and vitamin D. Induced sputum samples will be optimized for culture, Aspergillus galatomannan analysis and RT-PCR. This study is part of a larger project in which we assume that chronic respiratory infection by Aspergillus fumigatus and the accompanying immune response play an important role in the development of bronchiectasis in COPD. We suspect that this mechanism is controlled by vitamin D and it fails by suppression of the vitamin D receptor by Aspergillus fumigatus. The present study is designed by the Laboratory of pneumology and will be conducted in collaboration with the Laboratory of clinical bacteriology and mycology of the Catholic University of Leuven.
This study through the long-term observation followed up for 2 years to find the change of the COPD patients blood ROMs, systematically evaluate the relationship between ROMs and the severity of COPD. Evaluate the differences of prognosis between the different oxidative stress level (according to the level of ROMs are divided into higher and normal phenotype). Explore the new oxidative stress evaluation index ROMs application value in COPD.