View clinical trials related to Hypoxia.
Filter by:Determine whether the concentrations of UCH-L1 and GFAP measured in umbilical cord blood and in blood 0-6 hours postnatal accurately predict the extent of neurodevelopmental deficits and/or death at 18-20 months.
The primary objective of the study is to validate the proposed claims for the OxiCable device, for pulse rate and saturation accuracy in a diverse subject population over a specified saturation range.
This study proposes that modifying the current form of bCPAP by adjusting the nasal prongs to fit older children, will create a safe form of respiratory support that may help to decrease respiratory distress and thus mortality from pneumonia.
Ageing is the primary risk factor for most chronic diseases including type 2 diabetes mellitus. Sarcopenia and muscular mitochondrial dysfunction with aging are crucial mechanisms leading to decreased exercise tolerance and worsened insulin sensitivity. Thus, metabolic disease and frailty, which limits physical mobility as well as quality of life, share common cellular mechanisms. The investigators will test the hypothesis that a combination of normobaric hypoxia and exercise training elicits a synergistic effect on age-associated metabolic skeletal muscle dysfunction and the investigators will address the molecular mechanisms. In a randomized clinical study, the investigators will compare normoxic and hypoxic training conditions in elderly subjects. Outcome measures will focus on whole body insulin sensitivity and mitochondrial responses in skeletal muscle before and after the 8-week training intervention.
Sedation is needed in order to complete endoscopic retrograde cholangiopancreatography (ERCP) to alleviate discomfort and pain during the procedure. This is usually achieved with use of opioids and/or sedative agents such as benzodiazepines or propofol. Traditionally benzodiazepines have been used but nowadays propofol is becoming the drug of choice for sedation during ERCP. The problem with propofol sedation is the fact that it may case cardiorespiratory depression and there is no antidote for this like there is for benzodiazepines. Cardiovascular depression can usually be easily counteracted with drugs that are used to raise blood pressure or heart rate during general anesthesia but respiratory depression remains a problem. The aim of this study is to try to counteract the respiratory depression caused by propofol sedation using an old respiratory stimulant doxapram as opposed to placebo using a double blind randomized protocol. The investigators hypothesis is that boluses and an infusion of doxapram will alleviate the respiratory depression caused by propofol sedation.
The project will test the hypothesis that lung ventilation during exercise is unaffected by oxygen supplementation. In addition, the acute effect of oxygen supplementation on dyspnoea, heart rate and blood pressure will be studied.
Intraoperative intravenous fluid management practice varies greatly between anesthesiologists. Postoperative fluid based weight gain is associated with major morbidity. Postoperative respiratory complications are associated with increased morbidity, mortality and hospital costs. The literature shows conflicting data regarding intraoperative fluid resuscitation volume. No large-scale studies have focused on intraoperative fluid management and postoperative respiratory dysfunction. Hypotheses: Primary - Liberal intraoperative fluid resuscitation is associated with an increased risk of 30 day mortality Secondary - Liberal intraoperative fluid resuscitation is associated with increased likelihood of postoperative respiratory failure, pulmonary edema, reintubation, atelectasis, acute kidney injury and peri-extubation oxygen desaturation.
The purpose of this study is to compare heat and humidified oxygen with cold and dry oxygen in children with bronchiolitis. The hypotheses are that heating and humidifying inspired low flow supplemental oxygen will optimize mucociliary function thereby, 1) improve oxygenation, 2) decrease work of breathing, and 3) decrease length of hospital stay.
Despite recent advances in the care of mothers and newborn infants, many infants (approximately 20 per 1000 live births) continue to need resuscitation at birth. A proportion of these infants will have sustained significant injury through interruption of their blood and oxygen supply prior to delivery (perinatal asphyxia). In 2-3 babies per 1000 this will lead to brain swelling and the risk of long term brain injury called neonatal hypoxic-ischaemic encephalopathy (HIE). HIE remains a cause of neonatal death and long term disability. Early and accurate prediction of outcome would allow us to intervene during the window of the first 6 hours following birth, prior to secondary reperfusion and secondary brain injury. Estimating severity of injury can be difficult in newborn infants. Condition at birth does not predict neonatal, or longer term outcome. Biomarkers which could be measured at the time of birth and analysed at the bedside would offer these infants the best chance of timely and effective intervention. Through the BIHIVE study we have identified a number of predictive biomarkers in hypoxic-ischaemic encephalopathy. These markers are present in umbilical cord blood and have been identified through proteomic and metabolomic analysis of a stored biobank of samples from a recruited cohort of infants with perinatal asphyxia and hypoxic-ischaemic encephalopathy. We now wish to validate these biomarkers in an additional cohort, and will continue to explore new biomarkers in our stored biobank of umbilical cord samples. In addition we wish to assess our ability to predict neurodevelopmental and behavioural outcome in these infants. In this way we will determine the most robust biochemical and clinical markers for the prediction of early and medium term outcome in HIE. This study will establish the evidence base and validation of these biomarkers to the point where they can be developed into a bedside diagnostic algorithm which can be used in the labour ward to immediately identify those infants at risk of HIE in time to prevent secondary damage.
Laparoscopic surgery for gastric reduction is frequently associated with high levels of postoperative pain. Postoperative pain is very often treated with opioids. However large doses of opioids can result in respiratory depression with hypoxemia especially in high risk patients with obstructive sleep apnea. since a large group of patients undergoing surgery for gastric reduction surgery also have obstructive sleep apnea, it is expected that these patients are also at high risk for postoperative respiratory depression and hypoxemia. Intraoperative ketamine has been used as an effective multimodal agent to reduce postoperative pain. However, ketamine alone has not been examined to improve postoperative pain outcomes in patients undergoing gastric reduction surgery. More importantly, it is unknown if the use of intraoperative ketamine can lead to better overall quality of recovery in the same patient population. In addition, ketamine has been shown to improve ventilation but it remains to be determined if the intraoperative use of ketamine will result in less postoperative hypoxemic events. The main objective of the current investigation is to examine the effect of intraoperative ketamine on postoperative quality of recovery after gastric reduction surgery. The investigators hypothesize that subjects receiving ketamine will have a greater global quality of recovery score than the ones receiving saline.