Background: The main definitions of bronchopulmonary dysplasia (BPD), proposed by Jobe-Bancalari, Shennan et al., and Walsh et al., focus on oxygen (O2)-need and ventilatory support for the first weeks of life and at 36 weeks of post-menstrual age (PMA). Oxygen need at 36 weeks of PMA is sometimes due to intercurrent episodes (IEs) other than BPD. The aim of this retrospective study was to char...

Although reactive O2 species appear to participate in central nervous system (CNS) O2 toxicity, the exact roles of different reactive O2 species are undetermined. To study the contribution of extracellular superoxide anion (O2-) to CNS O2 toxicity we constructed transgenic mice overexpressing human extracellular superoxide dismutase (ECSOD; superoxide:superoxide oxidoreductase, EC 1.15.1.1) in ...

the emergency severity index (esi) is a five-level triage system that has shown promising reliability and validity. according to esi algorithm, in the presence of danger zone respiratory rate (rr), heart rate (hr) or oxygen (o2) saturation, patients should be up-triaged from esi level 3 to 2 hence, the current study aimed to investigate the value of the measurement of vital signs in predicting ...

2 Acclimatization to hypoxia requires time to complete the adaptation mechanisms that influence 3 oxygen (O2) transport and O2 utilization. Although decreasing hemoglobin (Hb) O2 affinity 4 would favor the release of O2 to the tissues, increasing Hb-O2 affinity would augment arterial O2 5 saturation during hypoxia. This study was designed to test the hypothesis that 6 pharmacologically increasi...

The cement industry is the second largest source of global man-made CO2emissions after power industry, and adoption O2/CO2combustion technology for kilns great significance in reducing CO2emissions. In this paper, effects pulverized coal mixed air combustion on velocity field, temperature CO2and NOx concentration distribution rotary kiln were investigated by CFD technique. results showed that t...

Preterm infants often require supplemental oxygen due to lung immaturity, but hyperoxia can contribute to an increased risk of respiratory illness later in life. Our aim was to compare the effects of mild and moderate levels of neonatal hyperoxia on markers of pulmonary oxidative stress and inflammation and on lung architecture; both immediate and persistent effects were assessed. Neonatal mice...