need help. Taking a Sample Clinical Case: A 27-year-old woman has been on a heav

Question

need help.

Taking a Sample Clinical Case: A 27-year-old woman has been on a heavy menstrual period for 12 days. Her hemoglobin is drastically reduced (8 g/100 ml blood: normal female value = 15 g/dL). Assume that the lung functionality, Pa_O_2 and PA_O_2, are normal at 100 mm Hg, the lung O_2, binding capacity is 20.1 ml O_2/100, and her hemoglobin saturation is 96% at a partial pressure of O_2 (PaO_2), of 100 mm Hg. Use the step-by-step calculations discussed earlier in this chapter to calculate total O_2 content (normal O_2 is = 20.0-20.4 mL/O_2/100 mL blood). Explain if the results are normal.

Explanation / Answer

1. The lady has lung O2 binding capacity is= 20.1 mlO2/100ml

Hemoglobin level= 8 g/dL

Normal Hemoglobin level = 15 g/dL

Therefore, the O2 binding capacity for the woman is=

= [O2 binding capacity] x Hemoglobin / Normal Hemoglobin

=[ 20.1] x 8 / 15 = 10.72 mlO2/dL

2. Oxygen content = O2 binding capacity x (Hemoglobin saturation %)

the O2 binding capacity for the woman = 10.72 mlO2/dL

Hemoglobin saturation = 96%

Therefore, Oxygen content = 10.72 mlO2/dL x 96%

= 10.72 x (96 / 100) mlO2/dL

= 10.29 mlO2/dL

3. Dissolved O2 value = PO2 x Solubility

The question stated tht PaO2 and PAO2 are normal therefore, the PO2 value is 95 mmHg (12.5kPA). the solubility of oxygen in blood is 0.3%.

Therefore, Dissolved O2 value

= 100 x (0.3 mlO2/ dL)

= 30 mlO2/ dL

4. Ttoal O2 content= Dissolved O2 +O2 content

= 30 mlO2/ dL+ 10.29 mlO2/dL

= 40.29 mlO2/dL

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