Pulmonary And Renal Support During Acute Respiratory Distress Syndrome
Acute Respiratory Distress SyndromeAcute Renal FailureIn patients presenting with the acute respiratory distress syndrome (ARDS), mechanical ventilation with low tidal volume (6 ml/kg predicted body weight) is the current gold standard for supportive care. However, despite a relative low tidal volume, approximatively one third of patients will experienced tidal hyperinflation, a phenomenon known to induce pulmonary and systemic inflammatory response. A further reduction of the tidal volume to 4 ml/kg (PBW) will prevent pulmonary area from tidal hyperinflation. As a result, hypercarbia and respiratory acidosis are commonly observed with such very low tidal ventilation. Extra corporeal CO2 removal is one of a mean to normalize arterial CO2 tension. Patients with ARDS also frequently develop acute renal failure which may required Renal Replacement Therapy. Some data suggests that starting early the RRT may favor outcome. The investigators hypothesized that a strategy combining ECCOR and RRT early in the course of patients presenting ARDS and acute renal failure will allow the tidal volume to be further reduced, providing lung protection, while avoiding the arterial CO2 tension to be increased. For this purpose, the investigators sought to evaluate the safety and efficacy of adding a membranel oxygenator within an hemofiltration circuit, either upstream or downstream of the hemofilter.
Effect of Different Ventilatory Strategies on Cardiac Function in Patients With Acute Respiratory...
Respiratory Distress SyndromeMechanical ventilation with low tidal volume (about 6 ml.kg-1) reduces mortality in ALI/ARDS patients respect to high tidal volume ventilation (about 12 ml.kg-1). This finding is usually explained by alveolar tidal overdistension associated to high tidal volume. Stretch-induced lung injury may trigger a cytokine-mediated inflammatory response. This may contribute to the development of systemic inflammatory response and multiple system organ failure and death. High tidal volume strategies might affect organ function by pathways not mediated by inflammatory response. It is well recognized the inverse relationship between tidal volume and cardiac output during mechanical ventilation. Nevertheless there are no clinical studies about cardiac output changes induced by low (6 ml.kg-1) and high tidal volume (12 ml.kg-1) in ALI/ARDS patients. The study hypothesis is that high tidal volume ventilation reduces cardiac output in ALI/ARDS patients respect to low tidal volume strategy. Thereafter reduced hemodynamic impact could explain beneficial effect of low respect to high tidal volume ventilation. If study hypothesis is confirmed, other studies should define the main cause of mortality reduction related to low tidal volume strategies and if appropriate hemodynamic monitoring and support should be required when low tidal volume strategies are harmful (i.e. traumatic brain injury).
Seattle-PAP Bubble Nasal CPAP and Work of Breathing
Respiratory Distress Syndrome In Premature InfantsBronchopulmonary Dysplasia1 moreThe investigators propose to test the hypothesis that Seattle bubble nasal continuous positive airway pressure (Seattle-PAP) supports respiratory physiology in very low birth weight (VLBW) infants more effectively than standard bubble nasal continuous positive airway pressure.
Feeding the Critically Ill During Phases of Altered Redox Status
Acute Respiratory Distress SyndromeOxidative Stress2 moreThe FEDOX trial is a prospective randomized clinical trial exploring oxidative stress as a mechanism of harm to explain the negative outcomes found in feeding trials that achieved caloric exposure commensurate with the nationally recommended guidelines. Due to its impact on energy metabolism, we will also explore low T3 syndrome's relationship to this mechanism. Finally, we will explore circadian patterns of diurnal/nocturnal TSH fluctuation as a potential biomarker to indicate this mechanism of harm has subsided. This 7-day prospective randomized clinical trial is designed to address the following specific aims (SA) in ICU patients (n=40) with systemic inflammatory response syndrome. SA1) Determine whether provision of enteral nutrition (EN) at 100% of levels in Nationally Recommended Guidelines NRG (25-30 kcals/kg, 100%NRG) early in critical illness increases reactive oxygen species (ROS) production compared to EN at 40% of NRG levels (10-12 kcals/kg, 40%NRG). Subjects will be fasted overnight and randomized to receive either 100% NRG or 40%NRG for 7 days. Plasma F2-isoprostanes will be measured daily and compared between groups through repeated measures analysis. SA2) Determine if EN at 100%NRG interrupts the critical illness induced low T3 syndrome and subsequently further increases the ROS production compared to 40%NRG. Serum thyroid parameters (T3, T4, rT3, TSH) with be measured daily and compared between groups as above. Mediation analysis will be used to determine the proportion of the effect of nutrition group on F2-isoprostane production explained by each thyroid parameter. SA3) Determine if the return of diurnal/noctural fluctuations in TSH is associated with decreased nutrition-induced ROS production. Plasma TSH will be measured twice per day at 0300 and 1800hrs to determine TSH fluctuation. The interaction effect between TSH fluctuation and nutrition group on F2-isoprostane production will be assessed through repeated measures analysis. This study provides vital mechanistic insight into the impact of feeding on oxidative stress during the first week of critical illness, represents an important first step in determining the safest timing and dosage of nutrition support, and sets the foundation for future larger clinical trials on these topics.
Extracorporeal Lung Assist Device in Acute Lung Impairment
Acute Respiratory Distress SyndromeThe purpose of this study is to compare the effect of interventional Lung Assist iLA activve to standard therapy in mechanically ventilated patients with severe acute lung impairment. Hypothesis: iLA(active) reduces the incidence of an increase in SOFA-Score of ≥3 points (or death) within 28 days compared to standard treatment.
Safety and Efficacy Study of the Draeger Babylog VN500 Device in HFOV Mode in VLBW Neonates
Respiratory Distress Syndrome In Premature InfantsThe purpose of this study is to determine the safety and effectiveness of the Babylog VN500 in high frequency oscillatory ventilation (HFOV) mode as a method for treating very low birth weight (VLBW) neonates requiring invasive respiratory support in the treatment of respiratory distress.
Breastfeeding Infants Receiving Respiratory Support Trial
Intensive CareNeonatal5 moreThe purpose of this study is to assess whether two methods of breathing support in babies called 'Humidified High-Flow Nasal Cannula' oxygen (HHFNC) and 'nasal Continuous Positive Airways Pressure' (nCPAP) are compatible with breastfeeding. Many babies who are premature or unwell after birth require help with their breathing. This is often achieved by blowing a continuous flow of air through the nose and down into the lungs in order to reduce the amount of effort the baby needs to inflate the lungs during breathing. Currently some centres allow babies to breastfeed whilst undergoing breathing support whilst other centres do not in case there is an increased risk of choking or other harmful events. In the latter case, babies are fed using a nasogastric tube (NGT) that runs from the baby's nostrils into their stomach. At this centre, babies are allowed to breastfeed whilst simultaneously on either HHFNC or nCPAP. This is because the concerns over the choking risk are not evidence based. This study aims to conclusively prove that thisfeeding protocol is safe and then to expand into other areas of research to find out the following: Whether breastfeeding during nCPAP or HHFNC leads to babies establishing full breastfeeding sooner (and subsequently reduce the length of their stay in hospital) What the effects of breastfeeding of nCPAP or HHFNC are on a baby's parents (e.g. whether it enhances bonding) If nCPAP and HHFNC have different effects on breastfeeding As part of this study the investigators will observe stable babies on nCPAP or HHFNC during breastfeeding episodes. The investigators will monitor the babies for signs of distress or instability and whether they are more stable when breastfeeding is not occurring. This will be compared to an episode where the same baby is fed by NGT to see which technique is better.
Human Umbilical Cord Mesenchymal Stem Cells (MSCs) Therapy in ARDS
Acute Respiratory Distress SyndromeAcute respiratory distress syndrome (ARDS) is a devastating inflammatory and destructive disease in critical ill patients. Preclinical studies have shown a promising perspective of mesenchymal stem cells (MSCs) therapies in ARDS. But the safety and efficacy of umbilical cord MSCs (UCMSCs) have not yet been convinced in clinical trails. This study will explore the safety and life-rescue potential of UCMSCs in refracotry ARDS.
Diaphragmatic Electrical Activity in Preterm Infants on Non-Invasive Ventilation
Respiratory Distress SyndromeNewborn1 morePreterm babies have immature lungs and frequent pauses in their breathing which often necessitates breathing support. Nasal Continuous Positive Airway Pressure (CPAP) is one of the most commonly used tools but does not always provide enough support. A new option is non-invasive high frequency ventilation (NHFOV), which gently shakes the lungs to help with gas exchange and may decrease a baby's work of breathing. The investigators plan to study very low birth weight preterm babies who are generally well but require some support with their breathing. By inserting a special feeding tube with sensors into the stomach, the investigators can measure the electrical activity of the diaphragm (EAdi), which is an important muscle for breathing. By analyzing EAdi in babies receiving either CPAP or NHFOV, the investigators will be able to measure and compare how each method of support affects a baby's breathing. This important study will help us determine the most appropriate breathing support for preterm babies.
The Efficacy of Different Anti-viral Drugs in COVID 19 Infected Patients
SARS-CoV InfectionCOVID 191 moreThe (World Health Organization) WHO NOR- (Coronavirus infectious disease) COVID 19 study is a multi-centre, adaptive, randomized, open clinical trial to evaluate the safety and efficacy of hydroxychloroquine, remdesivir and standard of care in hospitalized adult patients diagnosed with COVID-19. This trial will follow the core WHO protocol but has additional efficacy, safety and explorative endpoints.