Active clinical trials for "Hypoxia"

Randomized, placebo controlled trial evaluating the effect of acetazolamide on postural control in lowlanders older than 40 years travelling from 760 m to 3'100 m.

Randomized, placebo controlled trial evaluating the effect of acetazolamide on visuo-motor learning performance in lowlanders older than 40 years travelling from 760 m to 3'100 m.

RATIONALE: Diagnostic procedures, such as positron emission tomography, using the drug fluorine F18-EF5 to find oxygen and fludeoxyglucose F18 to find sugar in tumor cells may help in planning treatment for patients with non-small cell lung cancer.

Subjects undergoing elective ERCP and EUS will receive standard monitoring and sedation. In addition, capnography which measures carbon dioxide levels and can graphically assess respiratory activity will be used. Subjects will be randomized to either a capnography blinded or titration arm. In the capnography titration arm, the endoscopy team would be made aware of capnographic abnormalities as they arise throughout the procedure. In the capnography blinded arm, this information will not be available to the endoscopy team and represents standard of care. It is our hypothesis that using capnography can prevent low oxygen levels known as hypoxemia, during these procedures.

Acclimatization by mountaineering prior to high altitude sojourns have shown to be effective in prevention of acute mountain sickness (AMS). The aim of this study is to investigate whether intermittent exposure to normobaric hypoxia during sleep is also effective to prevent AMS.

The study assesses and compares the effect of 'pulse oximetry' (PO) used by Lady Health Workers (LHWs) at household level on increasing hospital referral acceptance rates in intervention clusters (district Jamshoro) for 0-59 months old children with severe pneumonia with the effect of LHWs using clinical signs alone in non-intervention clusters of the same district.

Life expectancy and quality of human life are important indicator of the sustainable development of the society. At the same time, the physical, functional, emotional and psychological components of the of the quality of life evaluation are subjected to be evaluated objectively and corrected using modern medical and socio-psychological methods. According to a fair number of experts, the arsenal of means for functional rehabilitation and health promotion is limited, and its expansion is only possible on the basis of the principles of adaptation medicine and their translation from experimental research into specific preventive and health-promoting technologies. The study is aimed at the development in molecular-endocrine, neuro-visceral and psychophysiological complex mechanisms of human long-term adaptation to systemic modern heating device-based hyperthermia for the development of medical technology focused on optimization in physical functioning, neuro-autonomic regulation, psycho-emotional status and stress- resistance as objective characteristics of humans' quality of life in working age. The novelty of the project is the disclosure of key mechanisms of adaptational direct and cross-effects to the prolonged systemic individually dosed hyperthermia underlying the optimization of stress-resistance, psycho-physiological status and exercise tolerance of practically healthy persons and leading to an increase in the subjectively perceived quality of life. The discovery of the mechanisms of hyperthermically induced neuroplasticity (in terms of the dynamics of oxidative stress, heat shock proteins and the brain derived neurotrophic factor) will also have a scientific significance, which in the long term prospectives may play a role in the development of technics for the prevention and rehabilitation of age-associated neuro-degenerative processes and diseases.

The investigators will study digoxin to inhibit the hypoxic response in congenital erythrocytosis due to germ line mutations that result in up-regulated hypoxia sensing. These forms of congenital erythrocytosis, characterized by augmented levels of hypoxia inducible factor (HIF)-1 and HIF-2, are due to mutations of VHL (von Hippel Lindau), EGLN1 (encoding prolyl hydroxylase 2 [PHD2]) and EPAS1 (endothelial PAS domain-containing protein 1) (encoding HIF-2α). In addition to a high hematocrit, patients have thrombotic complications and early mortality that are not improved by phlebotomy therapy. There is no effective therapy. Digoxin, long used to treat congestive heart failure, is a potent inhibitor of the master hypoxia-inducible transcription factor, HIF-1. The study hypothesis is that pharmacologic doses and levels of digoxin will decrease hemoglobin and hematocrit, decrease need for phlebotomy, decrease the propensity to thrombosis and decrease pulmonary pressure in patients with erythrocytosis due to up-regulated hypoxic responses. The clinical trial consists of 24 weeks of digoxin therapy in patients with hypoxic response-related erythrocytosis. The complete blood count, safety, symptoms of headache and lack of energy, echocardiogram, physical performance, and plasma products and blood cell expression of HIF-1-regulated genes are the outcome variables.

THRIVE (Transnasal Humidified Rapid-Insufflation Ventilatory Exchange) refers to the use of high-flow nasal cannula to augment the ability to oxygenate and ventilate a patient under general anesthesia. The use of high-flow nasal cannula oxygen supplementation during anesthesia for surgical procedures has been a recent development in the adult population, with limited data analyzing the pediatric population. This study will determine whether high flow nasal cannula oxygen supplementation during surgical or endoscopic procedures can safely prevent desaturation events in children under anesthesia.

Patients were classified into two equal groups using the presence or absence of hypertension during pregnancy into: hypertensive group (BP>140/90) and normotensive group (BP≤140/90. The surgical time intervals are assessed and classified the patients accordingly into short and log time interval subgroups (induction of regional anesthesia to delivery (I-D), initial skin incision to delivery (S-D), and uterine incision to delivery (U-D)