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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.uptodate.com/contents/oxygen-delivery-and-consumption
where SaO 2 is the arterial oxyhemoglobin saturation and PaO 2 is the arterial oxygen tension. In dyshemoglobinemias, the oxygen content is calculated with the same equation, although the saturations (and therefore the oxygen content) will be different for a specific PaO 2 [].Normal CaO 2 is approximately 20 mL O 2 /dL.. Similarly, the mixed venous blood oxygen content (CvO 2) is the amount of ...
https://www.respcalc.com/arterial-oxygen-content/
SaO2 is the percentage of available hemoglobin that is saturated with oxygen, this value is from a direct measurement of an arterial blood gas. 0.0031 is the solubility coefficient of oxygen at body temperature. PaO2 is the Partial Pressure of Oxygen (Alveolar Gas Equation) in …
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://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://respiratorycram.com/understanding-oxygenation-the-alveolar-arterial-gradient/
The Alveolar-arterial gradient (A-a gradient) is a mathematical equation that calculates how difficult it is for oxygen to cross the alveolar-capillary membrane. The equation utilizes two pressures; The partial pressure of oxygen in the alveolus; PAO2 (an estimated measurement)The partial...
https://www.frca.co.uk/article.aspx?articleid=100344
Oxygen delivery (DO2) and oxygen uptake (VO2) Oxygen delivery is the amount of oxygen delivered to the peripheral tissue, and is obtained by multiplying the arterial oxygen content (CaO 2) by the cardiac output (Q). For CaO 2 = 20.1 ml/100 ml and Q = 5 l/min:
https://academic.oup.com/bjaed/article/16/10/341/2288629
May 17, 2016 · Notwithstanding these comments, we will continue with oxygen delivery within the context of this article in order to remain consistent with common custom and usage. Global oxygen delivery describes the amount of oxygen delivered to the tissues in each minute and is a product of the cardiac output and arterial oxygen content.Author: J-Oc Dunn, MG Mythen, MP Grocott, MP Grocott
https://academic.oup.com/bjaed/article/4/4/123/308019
Aug 01, 2004 · An understanding of oxygen delivery ... is described using the equation: ... Where Hb is the haemoglobin concentration (g litre −1), Sa o 2 is the arterial Hb oxygen saturation and Pa o 2 is arterial oxygen partial pressure. Arterial oxygen content is …Author: S. A. McLellan, T. S. Walsh
https://www.sciencedirect.com/topics/immunology-and-microbiology/arterial-oxygen-tension
A normal arterial oxygen content of 16–20 mL/dL is reached with 12–15 mg/dL hemoglobin. In anemia, compensatory increases in cardiac output are required to maintain adequate oxygen delivery, which increases myocardial work and in combination with low oxygen content can lead to …
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