Active clinical trials for "Hypoxia"

Every day in Ghana, 47 babies are stillborn (SB) and 232 babies are born with low birth-weight (LBW) - many of whom will die in infancy or suffer lifelong consequences. Sleeping on the back during pregnancy has recently emerged in scientific literature as a potential risk factor for SB and LBW. In fact, one of the earliest studies to demonstrate this link was conducted in Ghana by investigators on this protocol. When a woman in mid-to-late-pregnancy lies on her back, her large uterus compresses one of the major veins that delivers blood back to her heart and may completely obstruct it. This may result in less blood being returned to her heart and less blood being pumped to her developing fetus. Such changes may negatively impact the growth of her fetus and, along with some other risk factors, may contribute to the death of her baby. The investigators have developed a device, 'PrenaBelt', to significantly reduce the amount of time a pregnant woman spends sleeping on her back. The PrenaBelt functions via a simple, safe, effective, and well-established modality called positional therapy. The purpose of this study is to determine the effect of the PrenaBelt on birth-weight and assess the feasibility of introducing it to Ghanaian third-trimester pregnant women in their home setting via an antenatal care clinic and local health-care staff. Data from this study will be used in effect size calculations for the design of a large-scale, epidemiological study targeted at reducing LBW and SB in Ghana and globally.

Maternal oxygen administration for concerning fetal heart rate tracing (FHT) patterns is common practice on Labor and Delivery units in the United States. Despite the broad use of oxygen, it is unclear if this practice is beneficial for the fetus. The purpose of this study is to compare oxygen to room air in patients with Category II fetal heart tracings with regard to neonatal acid-base status, subsequent tracings, and production of reactive oxygen species

The purpose of this study is to determine if, in preterm infants < 37 weeks' gestation at birth receiving oxygen without ventilatory/CPAP support, oxygen environment (OE) compared with nasal cannula oxygen (NC), will decrease the number of episodes with oxygen saturations less than 85% of ≥10 seconds in a 48 hour cross over period on either intervention. This is a randomized cross-over pilot study with a 1:1 parallel allocation of infants to oxygen environment or nasal cannula oxygen using stratified permuted block design. Following a 24 hour period on the first intervention, infants will cross over to a 24 hour period on the second (alternative) intervention before crossing back to the first intervention for a further 24 hours and then back again to the second (alternative) intervention for a further 24 hours.

This is a pilot study to test feasibility and safety of collection, preparation and infusion of a baby's own (autologous) umbilical cord blood during the first 3 days of age if the baby is born with signs of brain injury. The cord blood used is fresh (not frozen and then thawed).

The purpose of this study is to determine if 2 weeks of nightly exposure (7-12 hours per night) to moderate hypoxia (~2,400 meters or 7,500 feet) improves glucose metabolism in people with type 2 diabetes.

The purpose of this study is to evaluate the effect of lipo-prostaglandin E1 （lipo-PGE1) on renal oxygenation in patients with diabetic nephropathy by blood oxygenation level dependent magnetic resonance imaging (BOLD-MRI).patients with stable chronic kidney disease (CKD) were included. All patients were divided into two groups: diabetic nephropathy（DN) and CKD without diabetes. In addition to the conventional treatments, all patients received 10 ug lipo-PGE1 intravenously once daily for consecutive 14 days. Kidney BOLD-MRI were performed before and after lipo-PGE1 administration to acquire bilateral renal cortical R2*(CR2*) and medullary R2* (MR2*) values. Meanwhile, the clinical indexes at baseline and under lipo-PGE1 including 24 hours urinary protein and serum creatinine were collected. the investigators want to prove Lipo-PGE1 can improve kidney medullary oxygenation in patients with DN.

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.

Periodic ventilation that includes CHEYNE Stokes ventilation is a pathological pattern characterized by alternating periods of hyperpneas and apnea-hypopneas. It occurs generally during sleep, at high altitude and in hypoxic conditions in healthy subjects, and in some diseases like congestive heart failure. One study conducted on an animal model suggested that baclofen, a drug already used against spasticity in humans, could also be effective against periodic ventilation. The goal of the study is therefore to assess this hypothesis on hypoxia-induced periodic ventilation in healthy subjects during sleep.

In this prospective trial the investigators plan to study the efficacy of erythropoietin as a therapeutic agent in neonates who suffer from brain injury following perinatal asphyxia.

The hypothesis is that premature infants' can have enough cooling applied to cool their brain to decrease CNS injury without cooling their body.