Active clinical trials for "Hypoxia"

This physiological study showed an increase in regional ventilation with NIV but no difference in alveolar recruitment as compared to HFNC in patients with hypoxemic ARF. Although NIV provided better oxygenation than HFNC, the effect on lung volumes could explain the potentially deleterious effect of NIV in hypoxemic ARF, reinforcing the recently developed concept of patient self-inflicted lung injury.

This study was a comparative, single-center, non-randomized study conducted to evaluate the SpO2 accuracy per standards and guidelines identified above for SpO2 accuracy for pulse oximetry equipment over the range of 70-100% SaO2 under non-motion conditions. Arterial blood sampling measured by functional SaO2 CO-Oximetry, was used as the basis for comparison. Testing was conducted under normal office environment conditions.

BrainICU is a prospective observational study investigating the EEG slow wave activity in comatose cardiac arrest survivors under propofol anesthesia and its association with neurological outcome.

This trial will assess chemosensitivity differences of the carotid bodies in individuals with T2DM, compared to healthy controls. During baseline and hyperinsulinemia.

The aim of the project "High Altitude Medical Research Expedition Himlung 2013" (HiReach2013) is to comprehensively investigate the cerebral, cardiovascular and pulmonary adaptation and the reactions of the human immune system during an ascent to extreme altitudes of over 7000 m. A total of 44 healthy and trained volunteers will be included in the study after written informed consent has been obtained.Baseline sea level clinical examination will be performed in Bern, Switzerland (BE1) at 550 m 8 to 4 weeks before departure. High altitude research facilities will be available at the altitudes of 5000m, 6100m and 6900m. Post-expedition examination will be performed within 2 to 6 weeks after the end of the expedition in Bern. In the context of 3 sub-projects specific measurements and examinations are performed. These include: cMRI before and after the climb and neurovascular doppler examination during the climb; blood sampling for coagulation studies, cardiac and thoracic ultrasound, stress tests for assessment of cardiovascular performance.

The purpose of this study is to assess whether the addition of a drug such as Magnesium sulphate while providing therapeutic hypothermia (or cooling) to babies who are asphyxiated at birth provides additional benefit to the babies' survival and outcome compared to cooling alone.

the purpose of this study is to investigate whether propofol and sevoflurane have difference effect on cerebral oxygenation .

Acute and chronic anemia continue to be associated with increased mortality in a number of clinical settings, including cardiac and non-cardiac surgery. However, "We have no clinical measures that let us know of impending insufficient oxygenation as anemia progresses" (R.B. Weiskopf). The current proposal is based on experimental and clinical data which suggest that plasma methemoglobin (MetHb) may be a sensitive biomarker of tissue hypoxia and "anemic stress" in surgical patients. Hypothesis: Increased methemoglobin is a biomarker of tissue hypoxia during acute anemia. Primary Objective: To demonstrate a direct relationship between decreased Hb and increased MetHb in patients undergoing acute hemodilution on cardiopulmonary bypass (CPB).

Sepsis remains a common entity in critical care patients with remarkable mortality. Pulmonary and abdominal infections (with subsequent sepsis) are the most common in the ICU. Despite extended research activities, no differences in patient outcome or organ dysfunction were revealed. Sepsis is a complex immune reaction phenomenon based on unbalanced activation and suppression. In addition to changes of cytokine levels and immune cell activity, underlying genetic reactions are present. For instance, expression of miRNA (as a potential important step of immune cell activation) is likely changed during systemic and local immune reactions. The aim of this study is to perform a detailed assay of immune cell activation, to investigate the levels of pro- and antiinflammatory cytokines and the various expression of miRNA depending on the origin of infection in the two most common sides. This means in ICU patients with early pulmonary or abdominal sepsis as well as in healthy controls. Additionally, clinical parameters of organ function, current infection markers as CRP and procalcitonin, cardiovascular function and heart rate variability will be assessed. Parameters of local tissue perfusion in a dynamic testing during forearm ischemia and plasma adenosine concentration will be measured.

The purpose of this study is to evaluate Brain MRI (Magnetic Resonance Imaging), and Brain CT (Computed Tomography) Angiogram data in subjects who participate in the "Hyperbaric Oxygen for Chronic Stable Brain Injury" (HYBOBI) study. Including information from MRI and CT studies provide information about whether hyperbaric oxygen improves brain function in subjects who have had a brain injury. Subjects will complete MR and CT scans twice during the study. The first MR and CT will be performed prior to the first hyperbaric session of the HYBOBI study, and the second will be performed within two weeks following the last hyperbaric session.