2 Oxygen levels in a healthy adult A healthy human adult at sea level breathes air at a total air pressure of about 760 mmHg. Since atmospheric oxygen is present in air at a constant percentage of 20.9%, the partial pressure of oxygen (pO2) in the outside air at sea level is about ...
2 Oxygen tension in the early placenta At the time of implantation oxygen levels in the human uterus vary from 15 mmHg (Yedwab et al., 1976) to about 19 mmHg (Ottosen et al., 2006). This generally low oxygen condition may protect from teratogenesis and favors optimal preimplantation ...
High-flow oxygen therapy was stopped if Fio2 was equal to 0.21 and oxygen levels were in the expected range. Length of therapy in the high-flow oxygen group was defined as the time until high-flow oxygen therapy was ceased. The standard oxygen group was placed on oxygen using subnasal ...
Humans are aerobic animals; we need oxygen to support metabolism and generate energy. Simply put, breathing oxygen is necessary for life. Consequently, it would make sense that diseases that inhibit the transfer of oxygen from the lung to the blood should be treated with supplementary oxygen...
After exiting the oxygen chamber at P14, the oxygen consumption of the retina most likely exceeds the oxygen delivery, resulting in a state of hypoxia and, presumably, high OEF. Supporting this statement, several studies have observed that VEGF levels appear to be the highest when returning ...
While studies have been carried out to determine the pulse oxygen saturation (SpO2) levels on neonates following immediate cord clamping (ICC), no studies have been conducted in a hospital environment, to establish the effects of DCC on SpO2levels, immediately after birth. MethodA non-experimental...
SpO2 <90% was chosen for further analysis, and was found to be a predictor of mortality or critical care admission in patients <50 years and in patients with asthma. However, it was less reliable in patients from nursing homes and in patients with chronic obstructive pulmonary disease (COPD)...
In considering the serum levels during a period of three days it is thought that a more solid basis will be obtained for the judgment of the individual liver under investigation and to alleviate possi- ble skews of single measurements. Secondary outcomes are death and retransplantation (3 month...
Although nursing visual assessments are considered to be as important as electronic monitoring for ensuring patient safety, oxygen desaturation represents a particularly objective means of detecting poor respiratory effort in children undergoing IV sedation. Even if a nurse has not detected suboptimal ventil...
In subject area:Nursing and Health Professions Home oxygen therapy is used for oxygenation-impaired patients with lung disease if the PO2 is less than 60 mm Hg and when it remains so for more than 2 months after an acute exacerbation. ...