CvO2 calculation with Hb = 14, SvO2 = 65%, PvO2 = 40 mmHg yields CvO2 approximately which value?

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Multiple Choice

CvO2 calculation with Hb = 14, SvO2 = 65%, PvO2 = 40 mmHg yields CvO2 approximately which value?

CvO2 is the oxygen content of venous blood, coming from two parts: oxygen bound to hemoglobin and dissolved oxygen. The bound portion is Hb × 1.34 × SvO2, and the dissolved portion is 0.003 × PvO2. Plugging in the numbers: bound part = 14 × 1.34 × 0.65 ≈ 12.21 mL/dL. Dissolved part = 0.003 × 40 = 0.12 mL/dL. Sum ≈ 12.33 mL/dL, so CvO2 is about 12.3 mL/dL.

CvO2 is the oxygen content of venous blood, coming from two parts: oxygen bound to hemoglobin and dissolved oxygen. The bound portion is Hb × 1.34 × SvO2, and the dissolved portion is 0.003 × PvO2.

Plugging in the numbers: bound part = 14 × 1.34 × 0.65 ≈ 12.21 mL/dL. Dissolved part = 0.003 × 40 = 0.12 mL/dL. Sum ≈ 12.33 mL/dL, so CvO2 is about 12.3 mL/dL.

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