Active clinical trials for "Hypoxia"

The purpose of this study is to compare thermographic estimates of respiratory rate to manual counting (visual inspection) and thoracic impedance-based methods. Thermographic methods rely on detection of temperature changes in the nose and mouth that occur as room temperature air passes through the nose and mouth during ventilation, and may offer a non-invasive means of measuring respiratory rate without requiring any patient contact.

Patients with the acute respiratory distress syndrome (ARDS) have markedly varied clinical presentations. Main characteristics of mechanically ventilated ARDS caused by COVID-19, and adherence to lung-protective ventilation strategies are not well known.

Altitude tolerance correlates with the level of oxygenation achieved. The aim of the present study is to investigate whether increased expiratory pressure within the thorax is able to improve oxygenation during hypoxic hypoxia.

The purpose of this study was to clarify the possible mechanism of hypoxemia after surgical treatment of type A acute aortic dissection and the possible mechanism of the treatment role of inhaled nitric oxide in refractory hypoxemia.

Investigators want to use 18F-FDG PET/CT imaging to reflect tumor perfusion and hypoxia.

Children having selective ophthalmic artery chemotherapy for retinoblastoma under general anaesthesia may experience troubles during the procedure. The troubles are transient, may be severe and include hypoxemia, hypotension and bradycardia. All children having such trouble always fully recovered without any sequelae or prolonged length of stay. The investigators suspect that these phenomenons are caused by transient pulmonary hypertension.The objective is to see whether transient pulmonary hypertension and right-sided heart failure is present during theses phenomenon by trans-thoracic echocardiography.

A single-center cohort study to identify uni- and multivariate associations between marker gene expression and clinico-pathological parameters for the detection of robust and novel prognostic tools in prostate cancer

Aim: To evaluate the influence of oxygen deficit on the cognitive performance and also about the architecture and sleep efficiency in volunteers subjected to mild and moderate exercise in a hypobaric chamber. SUMMARY: Participants in this study 30 healthy male volunteers, aged 20 to 40 years, regular physical activity, constituting three groups: 1 - without exercise-hypoxia group 10 volunteers who not be subjected to any kind of physical exercise in hypoxia and remain all day of experiment, 2 - group exercise at sea level, is composed of 10 volunteers who will undergo a protocol exercise physical sea-level, 3 - group exercise and hypoxia - 10 volunteers who will carry out a protocol exercise on a treadmill, being the same in condition of hypoxia (hypobaric chamber). All groups on the first day of the experiment will undergo baseline assessments, laboratory blood analysis salivary and spirometric testing. Assessments will be personality and neuropsychological. After baseline assessments, the last day of the experiment, the groups will be evaluated again 4350m above sea level the sea, by personality tests, neuropsychological and laboratory. RATIONALE AND BACKGROUND: During exposure to environments with a partial reduction of oxygen, human body can undergo several physiological and psychological changes are not prepared for such condition. Few studies have reported that the elevation changes and cognitive aspects related to sleep. MATERIAL AND METHOD: They describe the procedures to be performed, and the study conducted in local with adequate infrastructure.