Active clinical trials for "Lung Diseases"

Hypothesis: COPD patients with frequent exacerbations have different pulmonary and systemic immune response than COPD patients without frequent exacerbations and this is related to their microbiome.

Patients with chronic obstructive pulmonary disease (COPD) are 2-3 times more likely to occur together with chronic gastrointestinal tract (GIT) diseases, such as inflammatory bowel disease (IBD) or irritable bowel syndrome (IBS). Similarly, despite many patients have no history of acute or chronic respiratory disease, up to 50% of IBD patients and 33% of IBS patients have pulmonary involvement, such as inflammation or impaired lung function. Increasing evidence indicated chronic gut and lung disease share key conceptual features with the disorder and dysregulation of the microbial ecosystem. However, the underlying mechanisms are not well understood. Our study is aimed to elucidate the intimate relationship between the gastrointestinal tract and respiratory tract, and uncover the mechanisms by which the gut microbiota affects the immune responses in the lungs, and vice versa.

To access the clinical usefulness of F1+2 in the diagnosis of PE in patients with AECOPD who require hospitalization. Specifically, to determine whether F1+2 may have an additional value in the subgroup of patients with an abnormal D-dimer,to determine whether it may increase the proportion of patients in whom PE can be safely ruled out and to determine the sensitivity, specificity and NPV of F1+2 at various cut-off values.

The purpose of this study is to elucidate phenotypic, clinical, and genetic characteristics of Korean Nontuberculosis Mycobacteria (NTM) patients.

Disease related biomarkers have been established decades ago, e.g. blood glucose for diabetes diagnosis and management. Their discovery has grown dramatically during the past decade and they have the potential to lead the physician in diagnosis -especially differential diagnosis - and therapy. However, a specific serum-biomarker in lung diseases has not been established. Aim of the current study is to to measure lung specific proteins in the serum in patients with various lung diseases and to correlate those with disease severity, lung function and other laboratory results

The purpose of this prospective cohort study is to determine factors involved in survival in new COPD patients treated by long-term oxygen therapy. Background: long-term oxygen therapy is indicated in patients with severe COPD. No studies have been performed in the past 20-25 years to examine the results of early clinical trials. Further studies are necessary to understand the utility of oxygen therapy in severe COPD.

This is a study of the lung health of the population of Vancouver and the extent of, and the risk factors for, chronic obstructive lung disease.

Chronic obstructive pulmonary disease is a serious disease . Exacerbations of Chronic obstructive pulmonary disease is an acute worsening condition of Chronic obstructive pulmonary disease, which always accompanied by clinical symptoms such as, shortness of breath and increased production of sputum. Respiratory infection (bacteria or viruses or mixed) is thought to be the main cause in most exacerbations.

The purpose of this study is to establish the large COPD cohort and biological database in China, aiming for precision medicine to optimize diagnosis and treatment choices.

Respiratory virus infections are one of the major causes of hospitalizations, and outbreaks of respiratory virus infection have led to severe economic loss. In addition to pulmonary complications, respiratory viruses can also lead to non-pulmonary complications. However, many previous studies on the complications of respiratory viruses are retrospective in nature, and therefore many patients with respiratory virus infection may not be tested. Furthermore, these studies did not take into account that respiratory viruses can be found in some asymptomatic individuals. The aim of this study is to capture the burden of respiratory viruses in patients with acute pulmonary and extrapulmonary complications. We will recruit patients admitted to our hospital with acute coronary syndrome, stroke and exacerbation of underlying lung diseases. We will collect saliva from these patients and test for respiratory viruses. As controls, we will recruit asymptomatic patients at the out-patient clinic for follow up of chronic heart, lung or neurological diseases. We anticipate that this study will greatly enhance our understanding of the epidemiology of respiratory viruses in acutely hospitalized patients. Our findings will be important for clinicians, public health practitioners and scientists.