View clinical trials related to Respiratory Distress Syndrome.
Filter by:The renal Doppler resistive index (RRI) is a noninvasive tool that has been used to assess renal perfusion in the intensive care unit (ICU) setting. Many parameters have been described as influential on the values of renal RI. Mechanical ventilation is associated with significant increases in the risk of acute kidney injury (AKI). Ventilator-induced kidney injury (VIKI) is believed to occur due to changes in hemodynamics that impair renal perfusion. The investigators hypothesized that patients who need mechanical ventilation should have a different response in RRI when different levels of Positive end expiratory pressure (PEEP) are applied. Investigators wish to describe changing in RRI due to changes in PEEP and to verify whether these changes could partially explain the occurrence of VIKI
During One-lung ventilation, the use of lower tidal volumes (VT) is helpful to avoid over-distension, provide sufficient oxygenation, but can result in increased atelectasis. Nevertheless, it is not known if, during one-lung ventilation with constant low VT, moderate levels of PEEP combined with lung recruitment maneuvers are superior to variable PEEP for intraoperative oxygenation and protection against PPCs. Aim of the study is to compare a strategy using constant tidal volume with recruitment maneuvers versus variable PEEP with recruitment maneuvers during thoracic surgery in adults. The investigators hypothesize that in adult, non-obese patients undergoing thoracic surgery under standardized OLV with variable PEEP and recruitment maneuvers as compared to constant PEEP without recruitment maneuvers prevent PPCs. Patients will be randomly assigned to one of two groups: FIX PEEP VOLUME GROUP (Groupfix): mechanical ventilation with constant (6 ml/kgIBW) tidal volume and PEEP of 5 cmH2O with recruitment maneuvers VARIABLE PEEP GROUP (Groupvar): mechanical ventilation with constant (6 ml/kgIBW) tidal volume with variable PEEP with recruitment maneuvers.
This is a multicenter randomized controlled clinical trial with an adaptive design assessing the efficacy of setting the ventilator based on measurements of respiratory mechanics (recruitability and effort) to reduce Day 60 mortality in patients with acute respiratory distress syndrome (ARDS). The CAVIARDS study is also a basket trial; a basket trial design examines a single intervention in multiple disease populations. CAVIARDS consists of an identical 2-arm mechanical ventilation protocol implemented in two different study populations (COVID-19 and non-COVID-19 patients). As per a typical basket trial design, the operational structure of both the COVID-19 substudy (CAVIARDS-19) and non-COVID-19 substudy (CAVIARDS-all) is shared (recruitment, procedures, data collection, analysis, management, etc.).
Sepsis leads to a deregulated host response that can lead to organ failure. During sepsis, experimental and clinical data suggest the occurrence of mitochondrial dysfunctions, particularly in circulating muscle and monocytes, which may contribute to organ failure and death. Lower respiratory infection is the leading cause of death from infectious causes. Mechanical ventilation (MV) is required in 20% of cases of bacterial pneumopathy with Streptococcus pneumoniae (S.p.) , with mortality reaching 50%. There are then frequently criteria for acute respiratory distress syndrome (ARDS), combining bilateral lung involvement and marked hypoxemia. Cyclic stretching of lung cells induced by MV causes sterile inflammation and tissue damage (i.e. ventilator-induced lung injury [VILI]), which can cause cellular dysfunction that alter the immune response, particularly during ARDS. This is why the application of a so-called protective MV is then required. However, this does not prevent about one-third of patients from showing signs of alveolar overdistension, as evidenced by an increase in motor pressure (MP) (MP≥ 15 cmH2O), associated with an increase in mortality. The deleterious effects of MV could be explained by the occurrence of mitochondrial abnormalities. Indeed, the cyclic stretching of lung cells leads to dysfunction in the respiratory chain and the production of free oxygen radicals (FOS), altering membrane permeability. These phenomena could promote VILI, facilitate the translocation of bacteria from the lung to the systemic compartment and lead to alterations in immune response. In our model of S.p. pneumopathy in rabbits, animals on MV develop more severe lung disorders (lack of pulmonary clearance of bacteria, bacterial translocation in the blood, excess mortality), compared to animals on spontaneous ventilation (SV). Intracellular pulmonary mitochondrial DNA (mtDNA) concentrations, a reflection of the mitochondrial pool, are significantly decreased in ventilated rabbits compared to SV rabbits and in infected rabbits compared to uninfected rabbits. At the same time, the mitochondrial content of circulating cells decreased early (H8) in all infected rabbits, but was only restored in rabbits in SV, those who survived pneumonia (Blot et al, poster ECCMID 2015, submitted article). These data suggest an alteration in the mechanisms that restore mitochondrial homeostasis (mitochondrial biogenesis and mitophagy) during the dual infection/MV agression, which may explain the observed excess mortality. Other work by our team illustrates the importance of these phenomena by showing in a mouse model of polymicrobial infection that inhibition of mitophagia in macrophages promotes survival (Patoli et al, in preparation). Human data on this subject are non-existent. The phenomena of mitochondrial dysfunction nevertheless deserve to be explored in humans during the combined MV/pneumopathy aggression in order to understand its possible impact on the effectiveness of the host's immune response. In a personalized medicine approach, these data would open up prospects for targeted therapies, capable of activating mitochondrial biogenesis and/or modulating mitophagia, to prevent organ dysfunction and mortality during severe CALs treated with antibiotic therapy.
Despite significant improvement in preterm infant survival, the incidence of bronchopulmonary dysplasia (BPD) in infants born < 28 weeks gestational age (GA) has been relatively stable at ~40%, with 10,000-15,000 new cases estimated annually. Delivery room (DR) management of preterm infants during the initial resuscitation has a significant impact on future development of BPD. Current DR practice as recommended by the Neonatal Resuscitation Program (NRP), focuses on providing positive pressure ventilation (PPV) for intubated infants based on pressure limited ventilation (PLV). But with rapidly changing pulmonary compliance during the early newborn period, PLV may lead to under or over inflation of the lungs and induce significant volutrauma, barotrauma and/or atelectotrauma, all of which are associated in the pathogenesis of BPD. No studies have specifically reported tidal volume (TV) provided in the DR in intubated infants with current PLV practices. Similarly, no study has evaluated the safety and efficacy of volume targeted ventilation (VTV) in the DR and its impact on BPD. With the proposed study, in Phase I, the investigators aim to demonstrate that measuring TV in intubated infants receiving PPV via PLV is feasible. The investigators also seek to demonstrate that with PLV, TV is highly variable in the first few hours of life, even with the same peak inspiratory pressures (PiP) due to rapidly changing pulmonary compliance. A successful Phase I will demonstrate that measuring TV is feasible in the DR, and with information on real time actual TV achieved during PPV, it is possible to target the TV for a goal TV by adjusting the PiP provided. Phase II will be a pilot randomized control trial to demonstrate feasibility of VTV compared to PLV. The investigators will also aim to understand the pulmonary mechanics and physiology during VTV. A successful Phase II will demonstrate VTV is feasible, is associated with stable TV, decreased peak inspiratory pressure and oxygen needs compared to PLV, and not associated with increased complications compared to PLV. It will thereby justify a larger randomized control trial with enough power to evaluate the efficacy of VTV in reducing BPD and other long term pulmonary morbidities for preterm infants.
Although more than 50% of survivors of critical illness experience one or more post-intensive care syndrome (PICS) problems, there are still no validated interventions for the management of PICS. The long-term goal of this study is to develop and refine in-person and telehealth strategies for the delivery of Intensive Care Unit (ICU) recovery care for the treatment of PICS.
The purpose of this study is to assess the left diastolic function at different levels of in patients affected by the acute respiratory distress syndrome (ARDS)
Modification of mechanically ventilated lesions by an ultra-protective multimodal strategy compared to a protective strategy in patients with veno-venous ECMO for severe ARDS.
This proposal will test the feasibility of implementing an assist volume control ventilation protocol in patients receiving mechanical ventilation in the medical intensive care unit. The trial will consist of a before-and-after trial design of block assignment to either adaptive pressure control (baseline) or assist volume control . This is a feasibility study looking at the management of patients in the ventilator.
In this study, the investigators aim to investigate if artificial uterine contractions prior to elective caesarean section delivery may have an impact on the respiratory morbidity of term neonates.