Given the following blood parameters, compute the total O2 content (dissolved + HbO2) of the blood in ml/dl: Hb = 18; PO2 = 40 mm Hg; SO2 = 73%
a. 16.5 ml/dl
b. 17.7 ml/dl
c. 18.6 ml/dl
d. 19.5 ml/dl
ANS: B
Known values are (1) PO2, (2) total hemoglobin content (g/dl), and (3) hemoglobin saturation. Given these values, the following equation can be applied:
CaO2 = (0.003 ? PO2) + (Hbtot ? 1.34 ? SO2)
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