Gas Laws

Question 1

What is the effect of CarboxyHgb on pulse ox readings?

Answer 1

False High

Question 2

What is the effect of Meth Hgb on pulse ox readings?

Answer 2

False low is SpO2> 85%, False high if SpO2 <85%

Question 3

What is the effect of HgbF on pulse ox readings?

Answer 3

No effect

Question 4

What is the effect of HgbS on pulse ox readings?

Answer 4

No effect

Question 5

What is the effect of polycethemia on pulse ox readings?

Answer 5

No effect

Question 6

What is the effect of Methylene and Isosulfan Blue on pulse ox readins?

Answer 6

False low

Question 7

What is the effect of Indocyanine green and Indigo Carmine on pulse ox readings?

Answer 7

Slight decrease

Question 8

What is the effect of blue nail polish on pulse ox readings?

Answer 8

False low

Question 9

What is LaPlace’s law?

Answer 9

T=Pr

Question 10

What level of microshock can cause VFib?

Answer 10

50-100 microamps

Question 11

What is the critical temperature?

Answer 11

The temperature above which a gas cannot be made into a liquid no matter how much pressure is applied.

Question 12

What volume does 1 mole of a gas occupy?

Answer 12

22.4 L

Question 13

What does Boyle’s law state?

Answer 13

Pressure and volume are inversely proportional.

Question 14

How many L of oxygen are in an E cylinder?

Answer 14

625-650 L

Question 15

What does Charles’ Law state?

Answer 15

That the volume of a gas increases in proportion to the temperature.

Question 16

What does Gay Lussac’s Law state?

Answer 16

That the pressure of a gas increases with temperature.

Question 17

What does Dalton’s Law state?

Answer 17

That in a mixture of gases the total pressure is the sum of the partial pressure of each gas and that in a mixture of gases the pressure exerted by each gas is the same as that which it would exert if it alone occupied the container.

Question 18

What does Fick’s law state?

Answer 18

That the rate of diffusion of a substance across a membrane is directly proportional to the surface area of the membrane, the solubility of the substance, and the partial pressure difference of the substance across the membrane. The rate of diffusion is inversely proportional to the molecular weight of the substance and the distance it needs to travel across the membrane.

Question 19

What are some clinical applications of Fick’s Law?

Answer 19

Expansion of air pockets and the endotracheal tube cuff when N2) is in use because N20 is more soluble than N2.

Question 20

What does Graham’s Law state?

Answer 20

That the rate of diffusion of a gas is inversely proportional to its molecular weight

Question 21

What does Henry’s Law state?

Answer 21

That the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas in contact with the solution.

Question 22

What is the Joule-Thompson Effect?

Answer 22

As a gas expands it cools.

Question 23

What are some clinical applications of Poiselle’s law?

Answer 23

IV flow, Airways, vascular flow, and thorpe tubes

Question 24

What determines laminar flow?

Answer 24

Viscosity

Question 25

What determines turbulent flow?

Answer 25

density

Question 26

What factors can change laminar flow to turbulent flow?

Answer 26

Increase in velocity, bend in a tube, irregularity in a tube

Question 27

What does Beer-Lambert’s Law state?

Answer 27

Each layer of equal thickness absorbs an equal fraction of the radiation that passes through it and absoprtion of radiation by a given thickness of a solution of a given concentration is the same as that of twice the thickness of a solution of half the concentration.