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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.
http://e-safe-anaesthesia.org/e_library/02/Oxygen_delivery_and_haemoglobin_CEACCP_2004_2.pdf
oxygen delivery is therefore central to the man-agement of patients during anaesthesia, resus-citation and during critical illness. This review deals specifically with the transport of oxygen from the lungs to non-pulmonary tissues. Definitions Oxygen delivery Global oxygen delivery (D_ O2) is the amount of oxygen delivered to the whole body ...
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://academic.oup.com/bjaed/article/16/10/341/2288629
May 17, 2016 · Thus, although the global oxygen delivery (oxygen flux) may be manipulated through changes in cardiac output and oxygen content, at a tissue level diffusion distance and partial pressure gradients will have the greatest effect in altering the diffusive oxygen flux. This is shown in Figure 3.Author: J-Oc Dunn, MG Mythen, MP Grocott, MP Grocott
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).
http://perfusioneducationonline.com/blood_basics/o2%20calculation.htm
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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.
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://litfl.com/tissue-oxygenation-assessment/
Apr 09, 2019 · haemoglobin-oxygen affinity: described by the oxy-Hb dissociation curve; OXYGEN CONSUMPTION MEASUREMENT. DO2/VO2 relationships. oxygen delivery index (DO2I): CI x arterial oxygen content (CaO2) x 10, difficult to interpret because varies greatly in illness
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