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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/
Using the oxygen content equation and a hemoglobin concentration of 15 g/dL the amount of oxygen this blood caries is 21.14 mL/dL. 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.
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 · These patients will rely more on the partial pressure of oxygen (PaO2) to augment their overall O2 content until a red cell transfusion is performed. Once the CaO2 is optimized, now it’s a matter of optimizing the patient’s cardiac output (CO) to facilitate oxygen delivery.
http://perfusioneducationonline.com/blood_basics/o2%20calculation.htm
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https://litfl.com/oxygen-extraction-ratio/
Apr 09, 2019 · Reviewed and revised 29 August 2014. OVERVIEW. 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
https://www.respcalc.com/arterial-oxygen-content/
The arterial oxygen content equation: CaO2 = (1.34 * Hb * SaO2) + (0.0031 * PaO2). The normal oxygen combining capacity is 1.39 mls/gram, however due to abnormal forms of hemoglobin such as carboxyhemoglobin and methemoglobin this value is reduced to 1.34 mls/gram. Hgb is Hemoglobin, the normal Hgb for males is 14-20 g/dl and females 12-15 g/dl.
https://pbrainmd.wordpress.com/2016/01/21/do2-equation/
Jan 21, 2016 · 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 below summarizes the various factors that contribute to tissue oxygen delivery, and is worthwhile to remember when thinking about a patient’s oxygen status.
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