Physics and Chemistry-Solubility of Gases Flashcards Preview

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Flashcards in Physics and Chemistry-Solubility of Gases Deck (11)
1

who's law permits calculation of dissolved O2 and dissolved CO2 in blood?

henry's law

2

Henry's law states that the amount of gas that dissolves in a liquid is proportional to the partial pressure of the gas in the gas phase.

just a fact

3

what is the amount of O2 that dissolves in blood?

0.003mL/100mL blood/mmHg

4

how do u calculate the amount of O2 dissolved in blood?

multiply the partial pressure of O2(PaO2) by 0.003.
it's that easy

5

How much O2 is dissolved in the arterial blood when PaO2 is 300mmHg

300mmHg x 0.003 = 0.9ml O2/100mL blood

6

How much does dissolved O2 increase in the blood when PaO2 increases from 100mmHg to 500mmHg?

100 x 0.003 = 0.3 mL O2/ 100mL blood
500 x 0.003 = 1.5mL O2/100mL blood
Increase = 1.2 mL O2/100mL blood

7

If the inspired O2 is given, how do you estimate the PaO2?

Multiply the inspired concentration by 5

8

How much O2 is disheveled if the FiO2 is 40%

40 x 5 = 200mmHg
200mmHg x 0.003 = 0.6 mLO2/100mL blood

9

what is the amount of CO2 dissolved in blood?

0.067 mL/ 100mL blood/ mmHg

10

how do you calculate the amount of CO2 that is dissolved in the blood?

Multiply the partial pressure of CO2 (PaCO2) by 0.067

11

How much CO2 is dissolved in in the arterial blood when PaCO2 is 50mmHg

50 mmHg x 0.067 = 3.35 ml CO2/100mL blood

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