It is used for medical treatment and could some day find use in deep diving and space travel. The term fluorocarbon is used rather loosely to include any chemical containing fluorine and carbon, including chlorofluorocarbons, which are ozone depleting. A significant problem, however, arises from the high viscosity of the liquid and the corresponding reduction in its ability to remove CO2. Total liquid ventilation, however, has difficulty moving enough fluid to carry away CO2, because no matter how great the total pressure is, the amount of partial CO2 gas pressure available to dissolve CO2 into the breathing liquid can never be much more than the pressure at which CO2 exists in the blood (about 40 mm of mercury (Torr)). It also has a high density, oxygen readily diffuses through it, and it may have some anti-inflammatory properties. Liquid immersion provides a way to reduce the physical stress of G forces. In this regard, a new therapeutic approach is the use of intranasal perfluorochemical spray for preferential brain cooling. Because there exist normal regions in the lungwith ARDS and because PLV in the normal lung results in worsened gasexchange, we postulated that the optimal dose of PFC for PLV may beless than the functional residual capacity (FRC) dose in the lung withlimited disease. Holding the breath while ascending after breathing at depth can cause air embolisms, Fluorocarbons can be perfluoroalkanes, fluoroalkenes and fluoroalkynes and perfluoroaromatic compounds.  Fluorocarbons also have low surface energies and high dielectric strengths. They are too reactive to be greenhouse gases.
, about 318 meters.  Forces applied to fluids are distributed as omnidirectional pressures. To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor. The first reports of mammalian survival during breathing of oxygenated perfluorocarbon (PFC) liquids came from Clark and Gollan in 1966. Talk with your doctor and family members or friends about deciding to join a study. Furthermore, perfluorocarbons have been demonstrated to reduce lung inflammation, improve ventilation-perfusion mismatch and to provide a novel route for the pulmonary administration of drugs..
 Thus, it is critical to choose the appropriate PFC for a specific biomedical application, such as liquid ventilation, drug delivery or blood substitutes. An astronaut totally immersed in liquid, with liquid inside all body cavities, will feel little effect from extreme G forces because the forces on a liquid are distributed equally, and in all directions simultaneously. With aerosolized perfluorooctane, significant improvement of oxygenation and pulmonary Tetrafluoroethylene, an important perfluorinated monomer. In theory, liquid breathing could assist in the treatment of patients with severe pulmonary or cardiac trauma, especially in pediatric cases.
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