Active clinical trials for "Respiratory Tract (Lung and Bronchial) Diseases"

Sepsis is a dysregulated host response to severe life-threatening infections, leading to organ failure and death in up to 40% of patients with septic shock. Pulmonary infections are the main cause of community-acquired sepsis and frequently lead to the development of acute respiratory distress syndrome(ARDS). Features of immunosuppression, including diminished cell surface monocyte human leukocyte antigen DR (mHLA-DR) expression, are strongly associated with hospital mortality. Such decrease in HLA-DR expression on antigen-presenting cells has been associated with impairment of microbial antigens to Tcells. Septic patients also show elevated expression of inhibitory receptors associated with cell exhaustion.. Yet, biochemical, flow cytometric and immunohistochemical findings consistent with immunosuppression have been observed in lungs and spleen of patients died of sepsis and multiple organ failure, demonstrating the relevance of studying these defects directly in organ tissues. A novel approach aimed to characterize the role and prognostic value of alveolar biomarkers measured directly in the injured lungs is warranted and supported by: -disappointing results of previous clinical trials attempting to restore the level of biomarkers measured on circulating cells; -evidences of regional immunosuppression in lungs of ARDS patients; -lung is the main site of hospital-acquired infections with a prevalence of ventilator-associated pneumonia in 30% over the course of Intensive Care Unit(ICU) stay in ARDS patients. Investigators speculate that biomarkers measured on alveolar leukocytes (AL) surface, are important predictors of outcome and potential therapeutic targets in ICU patients with pneumonia-associated ARDS. Investigators aim to explore whether biomarkers measured directly on AL from patients with pneumonia-associated ARDS are associated to regional pulmonary immunosuppression using leukocyte functional tests; and predictors of outcomes. Bronchoalveolar lavage fluid(BALF) and blood samples will be collected in ARDS patients. Leukocyte populations and cell membrane biomarkers will be quantified using flow cytometry. Leukocyte functional tests will be performed ex vivo on leukocytes collected from BALF and blood samples. Pharmacological interventions will be performed ex vivo. This project aims to identify biomarkers associated with outcomes and potential therapeutic targets.

To analyze the diagnostic and prognostic value of echocardiographic parameters. Prediction of APE-related 30-day mortality and adverse out comes. The need for rescue thrombolysis in initially normotensive Acute pulmonary embolism (APE) patients.

The purpose of this study is to determine how interstitial lung disease can be predicted over time in early rheumatoid arthritis. The investigators will study blood and phlegm samples from participants, along with quality of life questionnaires to determine if and how the presence of ILD may impact the participants quality of life over time.

The study will recruit and follow up patients for five years patients newly diagnosed with congenital heart disease associated pulmonary arterial hypertension(CHD-PAH) from the investigator's hospital. The main aim of the study is to describe the aetiology, natural history and management practices of CHD-PAH in central China.

The aim of our study is to investigate the etiological distribution of ILD, epidemiological characteristics of ILD cases such as age, gender, geography, smoking, occupation, economic status, education, and comorbidities. Another aim is to make the cost calculation from the first to the diagnosis in the patients diagnosed. Obtaining the missing data related to the ILD of our country is one of our goals.

This study aims to estimate the association between blood fibrocytes measured during a suspected exacerbation and 3-year decline forced expiratory volume in one second (FEV1), in patients with Chronic obstructive pulmonary disease (COPD) in primary care, with a history of smoking, independently of the number of exacerbations and of tobacco or occupational exposure.

This is a longitudinal study of following chronic pulmonary disease patients to observe and predict the clinical outcomes of these patients.

in this study, the investigators will collect data from patients with non-invasive fungal sinusitis to know what causes it

Sleep disordered breathing (SDB) is common in cardiovascular patients. Patients after cardiac surgery will be screened for SDB with the ApnoeLink device at the beginning of cardiac Rehabilitation and then after 3 weeks and 3 months.

The purpose of this study is to evaluate the costs, health-related quality of life and preference values from lung cancer patients assisted in a Brazilian public health care unit.