View clinical trials related to Lung Injury.
Filter by:The acute respiratory distress syndrome (ARDS) remains a common and morbid complication of critical illness. Sepsis contribute to a lot of ARDS cases, but mechanisms by which non-pulmonary insults such as extrapulmonary sepsis propagate lung injury remain unclear. Most eukaryotic cells release small anuclear membrane-bound vesicles into the extracellular environment in either physiological or pathophysiological conditions, often called extracellular vesicles (EVs) .Through their cargo containing bioactive molecules such as proteins, mRNAs, and microRNAs and their interaction with target cells, EVs are recognized as important mediators of cellular communication. Mitochondrial contents are clearly present in EVs, and mitochondrial cargo within EVs have been shown to stimulate the production of proinflammatory cytokines, further enhancing LPS-induced inflammation. Among the mitochondrial contents, mtDNA was present at higher levels in EVs.Therefore, we hypothesis, EVs containing mtDNA play an important role in the occurrence and development of ARDS caused by extrapulmonary sepsis.
Efficacy of Lung ultrasound in monitoring fluid resuscitation in chest trauma patients with lung contusions
Objective to investigate the protective effect of preoperative electroacupuncture on lung function in patients with mechanical ventilation for more than 2 hours under general anesthesia
This research aims to assess the use of an experimental and non-invasive procedure, Remote Ischemic Conditioning (RIC), as an adjunct therapy in attenuating severe COVID-19 disease. An excessive and counterproductive systemic inflammatory response is thought to be a major cause of severe disease and death in patients with COVID-19. Severe ICU cases frequently have markedly higher levels of inflammatory markers such as CRP, IL-6, IL and TNF-a; which is thought to be correlated with increasing disease severity. The relationship between dysregulated inflammatory processes and disease states such as acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are well understood. ALI is characterized by an acute exaggerated mononuclear/neutrophilic inflammatory response followed by progressive collagen deposition in the lung, and if severe enough, may progress to ARDS requiring ventilation.
COVID-19 is impacting on health systems in Brazil and worldwide. Reducing the risk of clinical deterioration and prolonged disease duration in hospitalized patients with COVID-19 may alleviate the burden caused by the pandemic. Melatonin (N-acetyl-5-methoxytryptamine) has demonstrated antiapoptotic, antioxidative, and anti-inflammatory roles and has been suggested as a potential protector against organ injuries and even mediate lower mortality rates after polymicrobial sepsis in animal models. Melatonin agonists may modulate protective effects against acute lung injury and play a clinical role in individuals with SARS-CoV-2 infection. The investigators proposed a clinical trial testing the effects of ramelteon 8mg in hospitalized patients with COVID-19.
The histologic hallmarks of lung inflammation and in the extreme, acute respiratory distress syndrome (ARDS), include intense accumulation of inflammatory cells in the airspaces and interstitium, injury to alveolar epithelial and endothelial cells, loss of epithelial-capillary integrity and accumulation of edema fluid in the interstitium and airspaces. Accordingly, for alveolar repair to occur inflammation must be halted, debris and inflammatory cells removed, injured tissue cells replaced, and capillary barrier function re-established. Macrophages are key players in all of these. Here the investigators hypothesize that resident alveolar macrophages and recruited macrophages serve completely different functions, acting independently (i.e. division of labor) yet cooperatively (synergism).
Randomized controlled trial comparing low inspiratory and expiratory flow during variable volume ventilation with a constant volume decelerating flow (pressure controlled volume guarantee) ventilation.
The present pilot randomized controlled clinical trial will test the hypothesis that in patients with ARDS, fixing ventilator settings to the conventional protective ventilatory strategy (VT 6 ml/kg ideal body weight and Pplat ≤ 30 cmH2O, PEEP according the PEEP/FiO2 table), control modes of mechanical ventilation will be associated to a concentration of pulmonary and systemic inflammatory mediators lower than the concentration of inflammatory mediators observed during assisted modes of mechanical ventilation.
In this study, the investigators aim to observe the change in alveolar macrophage function during acute lung injury.
This study is aimed to determine whether low- and standard-pressure pneumoperitoneum have different impacts on troponin T（TnT) level as well as pulmonary complications after prolonged robot-assisted surgeries in the Trendelenburg position.