نتایج جستجو برای: oxygen balance

تعداد نتایج: 346206  

Journal: :Medicina intensiva 2011
J Mesquida X Borrat J A Lorente J Masip F Baigorri

Cardiovascular failure or shock, of any etiology, is characterized by ineffective perfusion of body tissues, inducing derangements in the balance between oxygen delivery and consumption. Impairment in oxygen availability on the cellular level causes a shift to anaerobic metabolism, with an increase in lactate and hydrogen ion production that leads to lactic acidosis. The degree of hyperlactatem...

2017
Thibault Duburcq Arthur Durand Anne-Frédérique Dessein Joseph Vamecq Jean-Claude Vienne Dries Dobbelaere Karine Mention Claire Douillard Patrice Maboudou Valery Gmyr François Pattou Mercé Jourdain Fabienne Tamion Julien Poissy Daniel Mathieu Raphaël Favory

BACKGROUND Sodium lactate has been shown to improve hemodynamics and avoid fluid overload. The objective of this study was to confirm a beneficial effect on fluid balance with sodium lactate infusion and to specify whether the advantage of lactate is related to a negative chloride balance, its particular metabolism, or simply its energy load. METHODS This was an interventional, randomized, op...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Yi Y Zuo Edgar Acosta Peter N Cox Dongqing Li A Wilhelm Neumann

In the lungs, oxygen transfer from the inspired air to the capillary blood needs to cross the surfactant lining layer of the alveoli. Therefore, the gas transfer characteristics of lung surfactant film are of fundamental physiological interest. However, previous in vitro studies-most relied on the Langmuir-type balance-fail to cover the low surface tension range (i.e., less than the equilibrium...

Journal: :Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 2010
Motoaki Inagawa Tatsuya Ichinohe Yuzuru Kaneko

PURPOSE The aim of this study was to evaluate the effect of epinephrine (Epi) or felypressin (Fely) contained in dental local anesthetics on myocardial oxygen balance. MATERIALS AND METHODS Male Japanese White tracheotomized rabbits were anesthetized with isoflurane. Three doses of 0.18, 0.36, and 0.72 mL of 2% lidocaine hydrochloride containing 1:80,000 Epi or 3% prilocaine hydrochloride con...

Journal: :Letters in applied microbiology 2005
A González-Sánchez S Alcántara E Razo-Flores S Revah

AIMS To evaluate the contribution of oxygen transfer and consumption in a sulfoxidizing system to increase the elemental sulfur yield from thiosulfate oxidation. METHODS AND RESULTS A 10 l thiosulfate oxidizing bioreactor with suspended cells operating under microaerophilic conditions and a separated aerator with a variable volume of 0.8--1.7 l were operated with a consortium containing mainl...

Journal: :Circulation research 1999
S Winegrad D Henrion L Rappaport J L Samuel

Cardiac muscle must maintain a continuous balance between its energy supply and work performed. An important mechanism involved in achievement of this balance is cross talk via chemical signals between cardiac myocytes and the cardiac muscle vascular system. This has been demonstrated by incubating isolated cardiac myocytes in different concentrations of oxygen and then assaying the conditioned...

2002
Y. L. YUNG

Photolysis of water and subsequent escape of hydrogen can give rise to an oxygen atmosphere on Ganymede. Growth of the atmosphere may be limited by escape of fast oxygen atoms formed by photodissociation of 02. Escape of oxygen and hydrogen in an equilibrium configuration should balance net evaporation of water from the satellite's surface and the partial pressure of atmospheric O2 could be as ...

Journal: :Ageing Research Reviews 2021

Aging is characterized by a progressive loss of tissue integrity and functionality due to disrupted homeostasis. Molecular oxygen pivotal maintain functions, aerobic species have evolved sophisticated sensing system ensure proper supply demand. It not surprising that aberrations in oxygen-associated pathways subvert health promote different aspects aging. In this review, we discuss emerging fin...

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