View clinical trials related to Hypoxia.
Filter by:In this study, we investigated the effect of the capacity to cope with oxidative stress (oxidative stress response during and after clamping) in individuals with cerebral oximetry level between 40- 60 % and above 60 % and their effect on cognitive functions. Methods: In this retrospective study, patients who were scheduled for carotid endarterectomy, examined the MOCA tests before and after the operation and collected blood samples intraoperatively were included between January 2020-2021. The time periods specified below, blood samples were taken and serums were frozen at -80 celcius all this patients. Montreal cognitive function assessment test was applied before the operation, 24 hours and 7 days after the operation. Ten mililiters venous blood samples were collected to examine the status of basal neuron specific enolase, S100B, oxydative stress parameters (HAF-1 and DAF-1) at time intervals. Time intervals as follow: T1: Peripheral baseline measurements (blood will be taken from arterial blood sampling) + Cerebral Oxymeter levels + Montreal cognitive performance test + Modified Rankin Scale (mRS) T2: 1 minute before clamping (from peripheral and jugular vena blood sampling) + Cerebral Oxymeter levels T3: Before opening clamp(from peripheral and jugular vena blood sampling) + Cerebral Oxymeter levels T4: 24 hours after the procedure. (peripheral blood sampling) + Montreal cognitive performance test T5: 7 days after the operation. (peripheral blood sampling) + Montreal cognitive performance test + CO levels+ Modified Rankin Scale (mRS) Results: We found significantly positive corelation between cerebral oxymeter levels, oxydative stress parameters and cognitive performance tests in this six patient.
More than 2 million patients worldwide receive heart surgery every year, majority of these surgical patients will undergo cardiopulmonary bypass. However, the incidence of postoperative acute lung injury due to cardiopulmonary bypass is still as high as 20% to 35%. According to clinical experience, the earlier lung damage is detected, the more successful the treatment will be. On the basis of traditional detection, the investigators found a new indicator, serum soluble vascular endothelial-cadherin, which are easy to obtain and have certain specificity. Importantly, they can predict postoperative acute lung injury within 1 hour after cardiac surgery. It is meaningful that this indicator can provide clinicians with early decision-making advice and immediate treatment for patients who may be at risk.
Nowadays, anesthetists may encounter many patients who are not diagnosed with obstructive sleep apnea syndrome (OSAS) to undergo elective surgery. Recognition of these patients by anesthesiologists and taking necessary precautions will significantly reduce perioperative complications and mortality. STOP-BANG is a questionnaire used to predict high risk of OSAS. The aim of our study is to evaluate the clinical use of the oxygen reserve index as an early warning of possible desaturation in patients with low and high risk of OSAS according to the Stop Bang score.
The purpose of this research study is to evaluate the Owlet Smart Sock 3 wireless pulse oximeter performance in assessing the heart rate and oxygen saturation in neonatal population, while measuring the same parameter with a standard wired pulse oximeter simultaneously. The monitoring duration with the study device will be a maximum of 60 minutes, after which the recorded data from the Owlet Smart Sock 3 and the standard wired pulse oximeters will be de-identified and analyzed.
Obesity is a major global health issue and a primary risk factor for metabolic-related disorders. While physical inactivity is one of the main contributors to obesity, it is a modifiable risk factor with exercise training as an established, non-pharmacological treatment to prevent the onset of metabolic-related disorders, including obesity. Exposure to low-oxygen availability (hypoxia) via normobaric hypoxia (simulated altitude via reduced inspired oxygen fraction), termed hypoxic conditioning, in combination with exercise has been increasingly shown in the last decade to enhance blood glucose regulation and decrease body mass index, providing a feasible strategy to treat obesity. However, findings from studies investigating the potential for hypoxia to augment the exercise training response and subsequent metabolic health are equivocal. Notably, there is a lack of information regarding the optimal combination of exercise variables and hypoxic severity to enable an individualized and safe practice of exercising in a hypoxic environment. In the present randomized, single-blind, cross-over study, the investigators will investigate the effects of single-bout of different exercise modes under moderate hypoxia (FiO2, 16.5%). The investigators hypothesize that all exercises combined with hypoxia improve glucose homeostasis in overweight individuals.
In a randomized, placebo-controlled trial, 35 patients with HIBI were randomly designated to receive either MLC901 or placebo capsules over six months. We evaluated patients in two groups by modified Rankin Scale (mRS) and Glasgow outcome scale (GOS) to examine their state of disability and recovery
A ketogenic diet (KD) reduces daily carbohydrates (CHOs) ingestion by replacing most calories with fat. KD is of increasing interest among athletes because it may increase their maximal oxygen uptake (VO2max), the principal performance limitation at high altitudes. The investigators examined the tolerance of a 4-week isocaloric KD (ICKD) under simulated hypoxia and the possibility of evaluating ICKD performance benefits with a maximal graded exercise bike test under hypoxia and collected data on the effect of the diet on performance markers and arterial blood gases.
This WP specifically aims to elucidate the effects of IEK on hypoxic tolerance and the development and severity of AMS symptoms, blood and tissue oxygenation status, as well as sleep quality during an episode of acute exposure to severe hypoxia.
This study analyses the impairment of colour vision during hypobaric hypoxia in volunteers of different groups.
Performance testing of pulse oximeters. The protocol involves brief stable arterial oxygen desaturation in healthy volunteers and sampling arterial blood when a stable level of hypoxia has been attained and during different motion scenarios. The blood sample is analyzed for oxygen saturation with a gold standard bench CO-oximeter. This protocol is aligned with the latest ISO and FDA guidance documents for pulse oximeter testing.