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https://www.openanesthesia.org/o2_delivery_vs-_pao2/
This is summarized by the equation below: CaO2=(1.34 X Hgb X SaO2) + (0.003 X PaO2) Therefore, oxygen delivery can be affected by changes in cardiac output as well as changes in the oxygen saturation of hemoglobin, the amount of hemoglobin available, and to a much smaller extent the PaO2 (the amount of oxygen dissolved in the blood).
https://www.openanesthesia.org/peripheral_oxygen_delivery/
If cardiac output is 5 L/min, then total oxygen delivery is 1057 mL/min. This blood then travels to the periphery where the PO2 is 40 mmHg. From the oxyhemoglobin dissociation curve, it is evident that a PO2 of 40 is equal to an oxygen saturation of 75%. Using the equation for oxygen content again, the amount of oxygen in venous blood is 15.76 ...
https://www.uptodate.com/contents/oxygen-delivery-and-consumption
The oxygen is then transported from the lungs to the peripheral tissues, where it is removed from the blood and used to fuel aerobic cellular metabolism. This process can be conceptualized as three steps: oxygenation, oxygen delivery, and oxygen consumption. In this topic review, oxygen delivery and consumption are reviewed.
https://rk.md/2017/oxygen-delivery-equation/
Mar 26, 2017 · [Hb] is the hemoglobin concentration, SpO2 is the arterial oxygen saturation (as a decimal), PaO2 is the partial pressure of oxygen in the blood. It’s important to consider acute changes (ie, hemorrhage and desaturation) in the context of this equation. As shown, a patient could easily saturate at 100%… but only have a hemoglobin of 4 g/dL.
http://perfusioneducationonline.com/blood_basics/o2%20calculation.htm
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https://academic.oup.com/bjaed/article/16/10/341/2288629
May 17, 2016 · Global oxygen delivery, or oxygen dispatch, describes the total amount of oxygen delivered to the tissues each minute, and is a product of the cardiac output and arterial oxygen content. ... As can be seen from the above equation, alterations in cardiac output, arterial oxygen saturation, and haemoglobin concentration will affect oxygen delivery.Author: J-Oc Dunn, MG Mythen, MP Grocott, MP Grocott
https://pbrainmd.wordpress.com/2016/01/21/do2-equation/
Jan 21, 2016 · The human body does not care much about pO2 or FiO2. What is important to the body is the amount of oxygen actually being delivered to the tissues. Focusing on the pO2 in the ABG results, or the FiO2 settings of O2 support, without understanding how oxygen is delivered to body tissues can have dire consequences. The formula…
https://academic.oup.com/bjaed/article/4/4/123/308019
Aug 01, 2004 · Increased oxygen extraction by the tissues occurs during anaemia by improved matching of oxygen delivery to oxygen demand. There is a redistribution of blood flow to areas of high demand, such as the myocardium and the brain. In the microcirculation a number of mechanisms help to maintain tissue oxygenation.Author: S. A. McLellan, T. S. Walsh
https://www.frca.co.uk/article.aspx?articleid=100344
Oxygen delivery (DO 2) = 1005 ml/min. Oxygen uptake is the amount of oxygen taken up by the tissues that can be calculated from the difference between oxygen delivery and the oxygen returned to the lungs in the mixed venous blood. The oxygen returned is given by the product of the mixed venous oxygen content (CvO 2) and the cardiac output.
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 ...
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