Final Exam

Question 1

With regard to current, what does DC mean?

Answer 1

b. Electrons always travel in the same direction

Question 2

With regards to electricity, what is micro shock?

Answer 2

< 1 mA

Question 3

How many micro amps cause V-fib?

Answer 3

c. 150

Question 4

What are potential sources of microshock?

Answer 4

a. Pacer wires
b. Swan Ganz Catheter
c. CVP catheter
d. ALL OF THE ABOVE

Question 5

In the interest of electrical safety, an OR isolation power system should be ungrounded, while OR equipment should be grounded.

Answer 5

TRUE

Question 6

The law of physics which describes the electrostatic interaction between electrically charged particles is known as:

Answer 6

c. Coulomb

Question 7

With regard to [Ar]3d104s1, what does s1 mean?

Answer 7

c. one electron in the outermost orbital

This is in regards to metals having a nearly empty outer orbital. This particular metal is copper.

Question 8

Ohm’s Law is best represented by which equation?

Answer 8

d. V = I × R

Question 9

The term electricity can be defined as ‘the effects produced by moving charges’

Answer 9

True

Question 10

Electrical potential is measured in

Answer 10

a. Volts

Question 11

An increase in cardiac output would slow the onset of an inhalation anesthetic.

Answer 11

true

Question 12

Which statement is correct summary of The Meyer-Overton Rule?

Answer 12

d) potency of anesthetic is directly proportional to its lipid solubility

Question 13

The amount of gas dissolved is proportional to the temperature (T/F)

Answer 13

False - it’s inversely proportional

Question 14

How much CO2 dissolved in 100cc of blood if PaCO2 is 100mmHg?

Answer 14

a. 6.7cc

Question 15

A solution is considered supersaturated if

Answer 15

c. The solution contains more solute than allowed by the solubility.

Question 16

Osmotic pressure is proportional to the volume of the solution.

Answer 16

False

Question 17

According to Henry’s Law states that:

Answer 17

c. as pressure increases, solubility increases.

Question 18

An example of how temperature has an effect on solubility, is best described by which of the following?

Answer 18

d. Less anesthetic gas is required to reach and maintain a patient at MAC when they are hypothermic.

Question 19

Two liquids are miscible if they are soluble in each other in all proportions.

Answer 19

True

Question 20

If an anesthetic (like all other compounds) has a smaller molecular weight, it tends to have smaller intermolecular attractions. Therefore:

Answer 20

a. A smaller anesthetic molecule will have a higher vapor pressure

Question 21

In Boyle’s Law, Volume is proportional to pressure.

Answer 21

FALSE - volume is inversely proportional to pressure

Question 22

What are some examples of Boyle’s law?

Answer 22

a. Breathing
b. Oxygen cylinders
c. Pushing air out of a syringe
d. ALL OF THE ABOVE

Question 23

The composition of a gaseous mixture is measured by the pressure of each gas

Answer 23

c. Dalton’s Law

Question 24

You know your tires are good, but they look flatter in the winter. Assume the pressure has not changed.

Answer 24

b. Charles’s Law

Question 25

Equal volumes of gases at the same pressure and temperature contain the same number of molecules. This represents:

Answer 25

a. Avogadro’s number

Question 26

In applications of Gay-Lussac’s Law, which of the four gas variables are held constant? (choose 2)

Answer 26

a. P
b. V ««<
c. T
d. n ««<

Question 27

Charles Law would be demonstrated in anesthesia by:

Answer 27

a. The ETT/LMA cuff size increasing in volume as temperature increases when inserted into patient

Question 28

Avogadro’s Number Describes:

Answer 28

c. Volume to mole relationship

Question 29

Relative humidity is the measure of the saturation of water in air

Answer 29

True

Question 30

Graham’s Law of Effusion describes:

Answer 30

a. Effusion as the movement of gas through a pinhole
b. The rate of effusion is inversely proportional to the square root of molecular weight
c. The rate of effusion is directly proportional to the square root of the molecular weight
d. A & B «««<
e. A & C

Question 31

Fick’s Law of diffusion for gases explains:

Answer 31

a. concentration effect
b. second gas effect
c. diffusion hypoxia
d. Why N2O leads to increase in volume of increase in pressure in gas spaces in the body
e. ALL OF THE ABOVE

Question 32

What are the final products when CO2 reacts with soda lime?

Answer 32

d. Heat, H2O and carbonate

Question 33

Carbon dioxide diffuses _______times faster than oxygen across the alveolar and capillary membranes

Answer 33

d. 20

Question 34

Diffusion rate of a gas is directly proportional to:

Answer 34

a. Partial pressure gradient
b. Membrane area
c. Solubility of gas in membrane
d. ALL OF THE ABOVE

Question 35

The process by which the fetus receives O2 and drugs is via

Answer 35

a. simple diffusion across a membrane

Question 36

Effusion, the movement of a gas through a small opening, and diffusion, the movement of a substance high to low are substantially the same process.

Answer 36

TRUE

Question 37

Henry’s Law states that the amount of a non reacting gas which dissolves in liquid is directly proportional to the partial pressure of the gas, provided the temperature remains constant

Answer 37

TRUE

Question 38

Which of the following should be done if the soda lime becomes exhausted during a case?

Answer 38

b. increase FGF rate

Question 39

one mole is equal to ?

Answer 39

c. 22.4 L

Question 40

according to the meyer overton rule, agents with decreased lipid solubility have greater potency.

Answer 40

FALSE

Question 41

How many liters of oxygen does a full E size tank hold with a pressure of 2200 PSI?

Answer 41

d. 660 liters

Question 42

How long does it take to empty a full E size tank of Oxygen with a pressure of 2200 PSI and a flow rate of 5 l/min ?

Answer 42

a. 132 min