MED GAS THERAPY EXAM REVIEW
QUESTIONS & ANSWERS(RATED
A+)
Which of the following medical gases support combustion?
I. O2
II. N2O
III. compressed air
IV. CO2 - ANSWERC) I, II, and III
Which of the following statements regarding O2 is false? A) It is only slightly soluble
in water.
B) It is odorless and transparent.
C) It is flammable.
D) It is heavier than air. - ANSWERC) It is flammable.
By what means is oxygen for medical use in a hospital most commonly produced?
A) chemical decomposition
B) electrolysis
C) fractional distillation
D) physical separation - ANSWERC) fractional distillation
What is the most common and least expensive method for commercial production of
O2?
A) electrolysis of water
B) fractional distillation of air
C) physical separation by molecular sieves
D) chemical decomposition of sodium chlorate - ANSWERB) fractional distillation of
air
What is the U.S. Food and Drug Administration (FDA) purity standard for O2?
A) 21%
B) 90%
C) 95%
D) 99% - ANSWERD) 99%
Which of the following methods of producing O2 is commonly used in the home care
setting?
A) chemical decomposition
B) electrolysis
C) fractional distillation
D) physical separation - ANSWERD) physical separation
Air for medical use in a hospital should be which of the following?
I. particle-free
, II. oil-free
III. dry - ANSWERD) I, II, and III
Which of the following statements about CO2 is FALSE?
A) It does not support animal life.
B) It is a flammable gas.
C) It is odorless and colorless.
D) It is heavier than air. - ANSWERB) It is a flammable gas.
Which of the following statements about He is false?
A) It is an inert gas.
B) It is odorless.
C) It is nonflammable.
D) It is heavier than air. - ANSWERD) It is heavier than air.
What key property of He makes it useful as a therapeutic gas?
A) low solubility
B) chemical inertness
C) low cost
D) low density - ANSWERD) low density
The pressure of O2 or air in a bulk supply system is reduced to what standard
working pressure?
A) 10 psig
B) 14 psig
C) 25 psig
D) 50 psig - ANSWERD) 50 psig
Why are zone valves incorporated into a hospital's central gas piping systems? -
ANSWERI. to terminate O2 delivery to an area in case of fire
II. to allow selective maintenance without shutting the system down
What is the primary purpose of indexed connector systems? - ANSWERto prevent
inadvertent misconnections between equipment
Which of the following gases is used to treat conditions causing hypoxic respiratory
failure?
A) N2O
B) He
C) NO
D) cyclopropane - ANSWERC) NO
Department of Transportation (DOT) regulations require compressed gas cylinders
to be hydrostatically tested for leaks and expansion every how often?
A) 1 to 2 years
B) 3 to 5 years
C) 6 to 8 years
D) 5 or 10 years - ANSWERD) 5 or 10 years
QUESTIONS & ANSWERS(RATED
A+)
Which of the following medical gases support combustion?
I. O2
II. N2O
III. compressed air
IV. CO2 - ANSWERC) I, II, and III
Which of the following statements regarding O2 is false? A) It is only slightly soluble
in water.
B) It is odorless and transparent.
C) It is flammable.
D) It is heavier than air. - ANSWERC) It is flammable.
By what means is oxygen for medical use in a hospital most commonly produced?
A) chemical decomposition
B) electrolysis
C) fractional distillation
D) physical separation - ANSWERC) fractional distillation
What is the most common and least expensive method for commercial production of
O2?
A) electrolysis of water
B) fractional distillation of air
C) physical separation by molecular sieves
D) chemical decomposition of sodium chlorate - ANSWERB) fractional distillation of
air
What is the U.S. Food and Drug Administration (FDA) purity standard for O2?
A) 21%
B) 90%
C) 95%
D) 99% - ANSWERD) 99%
Which of the following methods of producing O2 is commonly used in the home care
setting?
A) chemical decomposition
B) electrolysis
C) fractional distillation
D) physical separation - ANSWERD) physical separation
Air for medical use in a hospital should be which of the following?
I. particle-free
, II. oil-free
III. dry - ANSWERD) I, II, and III
Which of the following statements about CO2 is FALSE?
A) It does not support animal life.
B) It is a flammable gas.
C) It is odorless and colorless.
D) It is heavier than air. - ANSWERB) It is a flammable gas.
Which of the following statements about He is false?
A) It is an inert gas.
B) It is odorless.
C) It is nonflammable.
D) It is heavier than air. - ANSWERD) It is heavier than air.
What key property of He makes it useful as a therapeutic gas?
A) low solubility
B) chemical inertness
C) low cost
D) low density - ANSWERD) low density
The pressure of O2 or air in a bulk supply system is reduced to what standard
working pressure?
A) 10 psig
B) 14 psig
C) 25 psig
D) 50 psig - ANSWERD) 50 psig
Why are zone valves incorporated into a hospital's central gas piping systems? -
ANSWERI. to terminate O2 delivery to an area in case of fire
II. to allow selective maintenance without shutting the system down
What is the primary purpose of indexed connector systems? - ANSWERto prevent
inadvertent misconnections between equipment
Which of the following gases is used to treat conditions causing hypoxic respiratory
failure?
A) N2O
B) He
C) NO
D) cyclopropane - ANSWERC) NO
Department of Transportation (DOT) regulations require compressed gas cylinders
to be hydrostatically tested for leaks and expansion every how often?
A) 1 to 2 years
B) 3 to 5 years
C) 6 to 8 years
D) 5 or 10 years - ANSWERD) 5 or 10 years
