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https://www.uptodate.com/contents/oxygen-delivery-and-consumption
Oxygen content — The arterial oxygen content (CaO 2) is the amount of oxygen bound to hemoglobin plus the amount of oxygen dissolved in arterial blood: CaO 2 (mL O 2 /dL) = (1.34 x hemoglobin concentration x SaO 2 ) + (0.0031 x PaO 2 )
https://www.ncbi.nlm.nih.gov/pubmed/8020386
The relationship between oxygen delivery and consumption has not been clearly established despite considerable investigation during the last decade. However, these variables are often measured to define a population of critically ill patients in whom oxygen consumption is limited by oxygen delivery, the state of so-called delivery-dependent oxygen consumption or pathologic supply dependency.Author: Leach Rm, Treacher Df
https://www.sciencedirect.com/science/article/abs/pii/S0749070405702888
DETERMINATION OF OXYGEN DELIVERY AND CONSUMPTION VERSUS CARDIAC INDEX AND OXYGEN EXTRACTION RATIO. The monitoring of hemodynamic parameters is part of the routine management of critically ill patients, and the restoration of these parameters to adequate values is an essential part of their treatment.Author: Jean Louis Vincent
https://www.sciencedirect.com/science/article/pii/0011502994900191
The relationship between oxygen delivery and consumption has not been clearly established despite considerable investigation during the last decade. However, these variables are often measured to define a population of critically ill patients in whom oxygen consumption is limited by oxygen delivery, the state of so-called delivery-dependent ...
https://www.atsjournals.org/doi/full/10.1164/rccm.201502-0267LE
Sep 15, 2015 · Oxygen Delivery and Consumption Are Independent: Evidence from Venoarterial Extracorporeal Membrane Oxygenation in Resuscitated Children. To the Editor: Circulatory shock is characterized by inadequate systemic O 2 delivery (D˙o 2 ), and because O 2 availability to tissues is limited, O 2 consumption (V˙o 2 ) is reduced.Author: Tosoni A, La Rotta G, Breatnach C, Anand, Foreman C, Davidson L, Redington An, Kavanagh Bp
https://journals.lww.com/ccmjournal/Abstract/1993/01000/Relationship_between_oxygen_consumption_and_oxygen.14.aspx
Cautious dosing of inhaled agents, maintenance of normothermia, and early optimization of the oxygen delivery/ oxygen consumption relationship seem to constitute reasonable measures in the intraoperative handling of these patients in order to red perioperative morbidity and mortality. (Car Care Med 1993; 21:64–69)
https://www.openanesthesia.org/peripheral_oxygen_delivery/
Oxygen Delivery. Therefore, oxygen delivery can be calculated: DO2 = CaO2 x CO. Oxygen Content. Oxygen content can be calculated as: CO2 = (1.39 x Hb x O2Sat/100) + (0.003 x PO2) Oxygen Consumption. Oxygen consumption can be calculated by the Fick principle as the difference between arterial and venous oxygen content: VO2 = CO x (CaO2 – CvO2)
https://pediatrics.aappublications.org/content/139/4/e20161117
Apr 01, 2017 · Extraction is a dynamic process that is the end result of a changing oxygen gradient, tissue blood flow, and Hb-oxygen affinity. Thus, increases in oxygen extraction can buffer, or compensate for, decreased oxygen delivery and/or increased oxygen consumption.Author: Chad C. Andersen, Chad C. Andersen, Nicolette A. Hodyl, Nicolette A. Hodyl, Haresh M. Kirpalani, Mic...
https://litfl.com/oxygen-extraction-ratio/
Apr 09, 2019 · Oxygen extraction ratio (O2ER) is the ratio of oxygen consumption (VO2) to oxygen delivery (DO2) global oxygen delivery (DO2) is the total amount of oxygen delivered to the tissues per minute, irrespective of the distribution of blood flow; oxygen consumption (VO2) is the total amount of oxygen removed from the blood due to tissue oxidative metabolism per minute
https://academic.oup.com/bjaed/article/16/10/341/2288629
May 17, 2016 · This is the fraction of oxygen delivered via the cardiovascular system that is actually utilized by the tissues, and is therefore the ratio of oxygen consumption to oxygen delivery: O 2 ER = V O 2 D O 2 ( globally )Author: J-Oc Dunn, MG Mythen, MP Grocott, MP Grocott
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