Question 1

Which of the following statements about medical air supplies are false?
1)The air intake port must be located indoors.
2)The source of medical air must be from the outside atmosphere.
3)Most hospital bulk air supply systems use two compressors.
4)Backflow through the compressors that are cycled off must be prevented manually.

Accepted Answer

A)  1 and 4 
B)  1,2,and 3 
C)  2 and 3 
D)  3 and 4

Question 2

If a portable liquid oxygen reservoir is set to deliver 6 L/min and the current reservoir weight is 38 lb,it will take _____ hours for the reservoir to empty if the weight of an empty container is 10 lb.

Accepted Answer

A)  5 
B)  23 
C)  27 
D)  36

Question 3

Which agency sets standards for the purity of medical gases?

Accepted Answer

A)  U.S. National Formulary 
B)  CGA 
C)  FDA 
D)  American Standards Association

Question 4

Which of the following statement(s)is (are)true about diaphragm type of valves?
1)A partial rotation of a diaphragm type of valve will not open the stem.
2)The valve seat in a diaphragm type of valve does not turn.
3)The diaphragm type of valve contains two fiber washers.
4)The diaphragm type of valve uses a threaded stem.

Accepted Answer

A)  2 
B)  1 and 4 
C)  3 and 4 
D)  2 and 4

Question 5

Which of the following is (are)a small nebulizer compressor(s)?
1)Diaphragm
2)Liquid air
3)Rotary
4)Piston

Accepted Answer

A)  4 
B)  1 
C)  1 and 2 
D)  1,3,and 4

Question 6

Which of the following gases is used to decrease the work of breathing associated with severe airway obstruction?

Accepted Answer

A)  Nitric oxide 
B)  Nitrous oxide 
C)  Helium-oxygen mixture 
D)  Carbon dioxide-oxygen mixture

Question 7

Which of the following "G" size oxygen cylinders will run out of oxygen first?
Pressure Flow
(psig) (L/min)

Accepted Answer

A)  700 1.5 
B)  900 1.0 
C)  1100 2.5 
D)  1600 3.0

Question 8

If the working pressure of a bulk oxygen system is 45 psig,all pressure-relief valves should be set at _____ psig.

Accepted Answer

A)  45 
B)  50 
C)  67 
D)  80

Question 9

Storage of a portable liquid oxygen system adjacent to a heat source will _____ the _____ of the oxygen.

Accepted Answer

A)  Increase; pressure 
B)  Increase; venting 
C)  Decrease; pressure 
D)  Decrease; venting

Question 10

Bulk oxygen is produced through which of the following?

Accepted Answer

A)  Molecular sieves 
B)  Fractional distillation 
C)  Semipermeable membranes 
D)  Combustion of natural gas

Question 11

Which of the letters points to the manufacturer's mark?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D

Question 12

According to the NFPA,for a nonambulatory patient,the minimum distance from a bulk oxygen supply is _____ feet.

Accepted Answer

A)  5 
B)  10 
C)  25 
D)  50

Question 13

A "G" size cylinder with 2000 psig is used for 6 hours at 5 L/min.How much gas was used during this time?

Accepted Answer

A)  2000 psig 
B)  750 psig 
C)  573 psig 
D)  107 psig

Question 14

The cylinder color for nitric oxide is:

Accepted Answer

A)  red. 
B)  light blue. 
C)  teal and black. 
D)  brown and green.

Question 15

An "E" size oxygen cylinder with 2200 psig has a set flow rate of 2 L/min.It will take _____ hours and _____ minutes until the gauge pressure reaches 400 psig.

Accepted Answer

A)  5; 30 
B)  5; 6 
C)  4; 30 
D)  4; 12

Question 16

Which of the following procedures should be followed in setting up a compressed gas cylinder at a patient's bedside?
1)Inspect the cylinder and valve for dirt,debris,and oil.
2)Make sure the cylinder is properly secured.
3)Tighten the regulator with a pipe wrench.
4)Open the cylinder valve completely.

Accepted Answer

A)  3 and 4 
B)  1 and 2 
C)  1,2,3,and 4 
D)  1,2,and 4

Question 17

Chemical pneumonitis and pulmonary edema can be caused by which of the following?

Accepted Answer

A)  Nitrous oxide 
B)  Carbon dioxide 
C)  Excess amounts of nitric oxide 
D)  A combination of nitric oxide and nitrogen dioxide

Question 18

Which of the following have the fastest diffusion rate through the semipermeable membrane of an oxygen concentrator?
1)Carbon dioxide
2)Water vapor
3)Nitrogen
4)Oxygen

Accepted Answer

A)  1 and 2 
B)  1 and 3 
C)  3 and 4 
D)  2 and 4

Question 19

A full "H" size cylinder is used to provide oxygen to an air-entrainment mask at 6 L/min.If the cylinder is replaced at 500 psig,how long will it last?

Accepted Answer

A)  5 hours 
B)  10 hours 20 minutes 
C)  10 hours 50 minutes 
D)  15 hours 23 minutes

Question 20

Which of the following statements reflect(s)the recommendations of the NFPA and CGA for storing cylinders outdoors?
1)Cylinders should not be stored in an area where the temperature exceeds 125° F.
2)Cylinders must be protected from the weather.
3)Full and empty cylinders should be kept separate.
4)Cylinders should not be stored outside

Accepted Answer

A)  4 
B)  1 and 2 
C)  2 and 3 
D)  1,2,and 3

Exam 3: Manufacture, Storage, and Transport of Medical Gases

If a portable liquid oxygen reservoir is set to deliver 6 L/min and the current reservoir weight is 38 lb,it will take _____ hours for the reservoir to empty if the weight of an empty container is 10 lb.

Which agency sets standards for the purity of medical gases?

Which of the following is (are) a small nebulizer compressor(s) ? 1) Diaphragm 2) Liquid air 3) Rotary 4) Piston

Which of the following gases is used to decrease the work of breathing associated with severe airway obstruction?

Which of the following "G" size oxygen cylinders will run out of oxygen first? Pressure Flow (psig) (L/min)