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https://pbrainmd.wordpress.com/2016/01/21/do2-equation/
Jan 21, 2016 · The equation usually used to describe the rate of oxygen delivery is as follows: This equation will not be applicable when levels of dys-hemoglobins (e.g. metHb, carboxyHb, etc) are high. A better formula to describe DO2, taking into account only the concentration of effective Hb would be: Example: ceHb = 150g/L; Wt = 70 Kg; PaO2 = 100; SO2 = 100%
http://www.learnhemodynamics.com/hemo/oxygen.htm
Oxygen Delivery - DO 2 The prime function of the circulation is to deliver oxygen and nutrients to the tissues and to remove waste products from them. If we know the cardiac output and the patient's haemoglobin level and oxygen saturation, then we can calculate one further critical value in hemodynamics - the oxygen delivery to the body or DO2.
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/
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://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://litfl.com/oxygen-extraction-ratio/
Apr 09, 2019 · 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 Under resting conditions with normal distribution...
https://www.uptodate.com/contents/oxygen-delivery-and-consumption
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.
https://ccforum.biomedcentral.com/articles/10.1186/cc10349
Aug 10, 2011 · Acute kidney injury (AKI) is common after cardiac operations. There are different risk factors or determinants of AKI, and some are related to cardiopulmonary bypass (CPB). In this study, we explored the association between metabolic parameters (oxygen delivery (DO2) and carbon dioxide production (VCO2)) during CPB with postoperative AKI. We conducted a retrospective analysis of …Author: Filip de Somer, John W Mulholland, Megan R Bryan, Tommaso Aloisio, Guido J Van Nooten, Marco Ranucci
https://crashingpatient.com/resuscitation/physiology-oxygenation-ventilation.htm/
Jul 14, 2011 · DO2IVO2I”Supply Dependency””Critical DO2″ Figure 3: Oxygen Supply Dependency One of the most important determinants of tissue oxygen delivery is the arterial hemoglobin concentration. While oxygen delivery from the left ventricle is linearly related to the hemoglobin concentration, capillary flow may be impaired at extremely high hematocrits.
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