Results 311 to 320 of about 448,350 (342)

Oxygen as Acceptor

EcoSal Plus, 2009
Like most bacteria, Escherichia coli has a flexible and branched respiratory chain that enables the prokaryote to live under a variety of environmental conditions, from highly aerobic to completely anaerobic. In general, the bacterial respiratory chain is composed of dehydrogenases, a quinone pool, and reductases ...
Vitaliy B, Borisov, Michael I, Verkhovsky   +1 more
openaire   +3 more sources

Oxygen transport— the oxygen delivery controversy

Intensive Care Medicine, 2004
Most cellular activities require energy in the form of oxygen, primarily obtained from the degradation of adenosine triphosphate (ATP) and other high-energy compounds. Oxygen must be present in sufficient amounts in the mitochondria to maintain effective concentrations of ATP in the electron transport system.
Vincent, Jean Louis, De Backer, Daniel
openaire   +2 more sources

Oxygen therapy and oxygen toxicity

Annals of Emergency Medicine, 1983
When oxygen therapy is warranted, the minimum effective dose generally should be given. Hypoxemic patients who have normal baseline ABG may be treated initially with an intermediate to high FiO2 in the range of 35% to 100%, depending on the severity of the respiratory distress. The majority of patients with exacerbations of COPD who are not in extremis
openaire   +2 more sources

Skin Permeability to Oxygen and Hyperbaric Oxygen

Archives of Surgery, 1970
It has been assumed that exposure to oxygen and hyperbaric oxygen (HPO) is beneficial to hypoxic skin in part because oxygen directly penetrates the tissues. Thus, it was felt necessary to determine the extent of tissue permeability to oxygen in terms of elevation of the tissue oxygen tension (TOT).
R P, Gruber, D H, Heitkamp, L J, Billy, J J, Amato   +3 more
openaire   +2 more sources

Perioperative oxygen therapy and oxygen utilization

Current Opinion in Critical Care, 2010
Tissue hypoxia is a key trigger for organ dysfunction. The maintenance of adequate tissue oxygenation is therefore of particular importance during major surgery. In this review, we discuss the physiological basis and the rationale underlying the recent concepts of perioperative oxygen therapy.Adequate tissue oxygenation is vital for optimal tissue ...
Benoit, Vallet, Emmanuel, Futier
openaire   +2 more sources

Halothane Mimics Oxygen in Oxygen Microelectrodes

Anesthesiology, 1979
The effects of halothane and enflurane on the polarographic measurement of oxygen with five platinum and three gold microelectrodes were examined. Oxygen microelectrodes were calibrated in saline solution equilibrated with either nitrogen (N2) or air, then either halothane, 1.0 per cent, or enflurane, 2.0 per cent, was added to the gas mixture.
R D, McHugh, R M, Epstein, D E, Longnecker   +2 more
openaire   +2 more sources

Oxygenation, oxygen delivery and anaesthesia in the horse

Equine Veterinary Journal, 2014
SummaryHorses are the most difficult of the common companion animals to anaesthetise. Hypoxaemia or inadequate oxygen delivery to peripheral tissues during anaesthesia would seem a potential cause of increased mortality, but no direct link has been established.
J A E, Hubbell, W W, Muir
openaire   +2 more sources

Clinical Use of Oxygen Stores: Pre-oxygenation and Apneic Oxygenation

1992
During states of respiratory arrest the human oxygen stores may be used therapeutically, regardless of the origin, i.e. either prior to the routinely induced apnea for endotracheal intubation or as an emergency measure in any other case of apnea. The present considerations focus on the clinical use of the oxygen stores available, applying.
R, Zander, F, Mertzlufft
openaire   +2 more sources

Monitoring oxygen transport and tissue oxygenation

Current Opinion in Anaesthesiology, 2004
To review recent publications in the field of oxygen delivery and tissue oxygenation. With few exceptions, we restricted our selection to clinical studies published in the English literature.No major breakthroughs have occurred in the past decade in the diagnosis or treatment of tissue hypoxia.
Guillermo, Gutierrez, Marian E, Wulf-Gutierrez, H David, Reines   +2 more
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The relationship between oxygen demand, oxygen uptake, and oxygen supply

Intensive Care Medicine, 1990
Results of the relationships between oxygen supply, demand, and uptake can be used to interpret cardiac output values, identify types of acute circulatory failure, guide attempts to improve cellular function, and thus prevent the development of multiple organ failure and death. Five steps in the interpretation of cardiac output values are recommended: (
openaire   +2 more sources