Active clinical trials for "Acute Lung Injury"

Central venous pressure (CVP) is characterized by a low-frequency pleural-dependent as well as a high-frequency cardiac pulsatile component. The aim of the study is to compare the low-frequency component of CVP with the esophageal pressure (Pes), as surrogate of pleural pressure, to estimate trans-pulmonary pressure (PL).

Acute Respiratory Distress Syndrome (ARDS) is the main clinical presentation of SARS-CoV-2 (Covid-19) infected patients admitted in Intensive Care Unit (ICU). During the first phase of the outbreak (between February and May 2020), the use of invasive Mechanical Ventilation (MV) was largely required with 63% of ICU patients intubated in the first 24 hours after admission and up to 80% of patients during the overall ICU stay. Mortality was especially higher when using MV in the first 24 hours. In contrast, the use of non-invasive oxygenation strategies in the first 24 hours was only 19% for High Flow Nasal Cannula oxygen therapy (HFNC) and 6% for Non-Invasive Ventilation (NIV). Several non-invasive oxygenation strategies were proposed in order to delay or avoid MV in ICU patients suffering from Covid-19 ARDS. The use of HFNC became the recommended oxygenation strategy, based in particular on publications prior to the outbreak. The use of NIV or Continuous Positive Airway Pressure (CPAP) combined with HFNC have also been proposed. Although these non-invasive oxygenation strategies seem widely used in the second phase of the outbreak, they have not yet confirmed their clinical impact on MV requirement and patient's outcome. Moreover, no comparison has been made between these different non-invasive oxygenation strategies. The aim of this study is to compare different non-invasive oxygenation strategies (HFNC, NIV, CPAP) on MV requirement and outcome in ICU patients treated for ARDS related to Covid-19.

The purpose of this study is the observation of the course of the mechanics of the respiratory system the endexpiratory lung volume and the inflammatory response in patients undergoing treatment with extracorporeal life support (ECLS) due to severe refractory respiratory failure at our department.

Despite decades of research, the mortality in acute lung injury remains very high and treatment options are very limited. Given these facts, the best treatment modality may be in prevention of this lethal syndrome. Historically, imaging has played a crucial role in understanding ALI. The appearance of chest radiography is one of the consensus criteria in defining ALI, and commuted tomography (CT) scans further advanced the understanding of the pathoanatomy of ALI. While valuable, these imaging modalities are nonspecific and do not incorporate functional cellular physiology. PET imaging measures concentrations of radioisotopes in the body. By embedding in, but not altering molecules, the natural fate of these tracers can be studied with PET imaging. Advances in the understanding of ALI include blood flow distribution, as well as the response to alveolar recruitment maneuvers and prone positioning. Not all patients who are receiving mechanical ventilation develop ALI. Inflammation in the lungs is known to play a key early role in the development and progression of ALI. Secondary to inflammation, the lungs develop edema and do not exchange oxygen as well. This early inflammation is in part driven by a specific type of immune cell called the neutrophil. These cells seem to travel and become sequestered in the lung- they are "recruited" to the lung during this inflammatory stage. When there, these neutrophils release inflammatory substances which are integral in the development of ALI. Neutrophils use primarily glucose as a fuel source. The radio isotope [18F]Fluorodeoxyglucose (FDG)is a glucose analog and therefore taken up/ingested by the neutrophils as a part of their normal metabolism. Because of this fact, positron emission tomography (PET) using the radio isotope [18F]FDG is a highly sensitive marker to look at the recruitment of neutrophils to the lung, therefore quantifying the degree of pulmonary inflammation prior to the development of ALI. The investigators seek to examine the relationship of pulmonary inflammation in patients at risk for ALI, but without clinical evidence of the syndrome. The investigators seek to enroll ten patients in a pilot trial.

The purpose of this study is to determine the impact of the serum soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) on etiology and prognosis of acute respiratory distress syndrome (ARDS)

Acute lung injury is a common complication of cardiac surgery with cardiopulmonary bypass, and it is significantly related to prolonged postoperative recovery, hospital stays and medical cost. Currently available predictors of acute lung injury after cardiac surgery are still limited within clinical data. Several genetic polymorphism of inflammatory mediators have been reported to be associated with severity of sepsis and ARDS, but the association of these inflammatory polymorphism and acute lung injury after cardiac surgery has never been reported. This study is performed to investigate the association of genetic polymorphisms including TNF -308A/G, IL-10 -1082A/G and IL-6 -572C/G and postoperative lung injury.

The study is a chart review of all children admitted over a two year period with the diagnosis of acute respiratory distress syndrome. Short term outcomes, such as mortality, length of ventilation and length of stay, will be reviewed. Factors that impact these outcomes will also be reviewed.

This study aims to investigate outcomes and predictors of outcome after extracorporeal membrane oxygenation (ECMO) therapy for severe acute respiratory syndrome (ARDS) in COVID-19 patients.

This is a case series of patients with COVID-19 admitted to the largest university hospital in Sao Paulo, Brazil, during the 2020 COVID-19 pandemic. Data will be collected prospectively and retrospectively. The main objective is to describe the characteristics of critically ill patients with COVID-19 and their clinical outcomes, and to identify risk factors associated with survival, to inform clinical decision-making and to guide the strategy to mitigate the epidemic, both within each hospital and ICU and in public health management.

With the influx of patients suspected of Covid-19 and the limited number of hospital beds, there is a need for sensitive triage to detect patients at risk of pulmonary complications and therefore requiring hospitalization, but also specific triage to safely discharge patients without risk factors or signs of clinical or ultrasound severity. The use of pulmonary ultrasound in addition to clinical assessment seems appropriate. Indeed, it allows early detection of signs of pneumopathy which, in the current context, most often correspond to Covid-19. These signs include B-lines, which indicate interstitial pulmonary oedema, and an anfractuous and thickened pleural line, or even centimetric parenchymal condensations with a low level of pleural effusion. Conversely, the presence of a medium to large pleural effusion is not very suggestive of the diagnosis of Covid-19. In addition, a lung ultrasound score has been developed and validated to assess the severity of acute respiratory distress and predict the occurrence of acute respiratory distress syndrome. It is based on the performance of a 12-point (6 per hemi-thorax) pulmonary ultrasound with the collection of the presence of B-lines, condensation or pleural effusion. In the hands of a trained operator, this examination takes only a few minutes. The aim of the study is to develop a score based on clinical and ultrasound evidence to allow early and safer referral than that based on clinical evidence alone. To do this, the study will retrospectively collect clinical and lung ultrasound data from departments that use this technique on a daily basis.