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Blood oxygen transport and tissue oxygenation were studied in 28 calves from the Belgian White and Blue breed (20 healthy and 8 hypoxaemic ones). Hypoxaemic calves were chosen based on their excessive respiratory frequency and to their low partial oxygen pressure (PaO 2) within the arterial blood. Venous and arterial blood samples had been collected, and 2,3-diphosphoglycerate, adenosine triphosphate, chloride, inorganic phosphate and hemoglobin concentrations, and pH, PCO 2 and PO 2 had been determined. An oxygen equilibrium curve (OEC) was measured in standard situations, for each animal. The arterial and venous OEC had been calculated, taking body temperature, pH and PCO 2 values in arterial and venous blood into consideration. The oxygen change fraction (OEF%), corresponding to the diploma of blood desaturation between the arterial and the venous compartments, and the amount of oxygen launched on the tissue level by one hundred mL of blood (OEF Vol%) were calculated from the arterial and venous OEC mixed with the PO 2 and hemoglobin concentration. In hypoxaemic calves investigated in this study, the hemoglobin oxygen affinity, measured below commonplace circumstances, was not modified.Stop by my site - BloodVitals home monitor
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