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Nicole L.

asked • 23d

the fraction saturation of myoglobin at 30 mm Hg and 100 mM Hg, the partial pressure of O2 in venous and artery blood

PO2: YO2:

0.5 0.161

1 0.277

2 0.434

3 0.535

4 0.605

6 0.697

8 0.754

12 0.821

20 0.885

Stanton D.

Hi Nicole L., This question is spartanly stated. PaO2 = 75 - 100 mm Hg, PvO2 = 30 - 40 mm Hg . The table appears to be saturations of myoglobin, at various PO2 levels. Myoglobin sucks O2 up nicely. Do you need a math fit for your myoglobin data to estimate 30 and 100 mm saturations? Since this is a straight equilibrium uptake, graph 1/YO2 vs. 1/PO2 . Has intercept 1 and slope K, where K is the dissociation constant. Check out P50_(pressure) on W.i.k.i.p.e.d.i.a -- Cheers, -- Mr. d.
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22d

Stanton D.

Hi Nicole L., As far as I can detect, you need a math fit for your myoglobin data. Search for p50_(pressure) on the web; graph 1/YO2 vs. 1/PO2. Gives intercept 1 and slope K, where K is the dissociation constant. -- Cheers, -- Mr. d.
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22d

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