Medical Gases 2026
What are considered therapeutic gases? - answerO2
O2- NO mixture
O2-He mixture
What is the fire-risk classification of N and CO2? – answer Non-flammable
What medical gases support combustion? - answerO2
N2O
Compressed air
O2 is flammable - answerFalse
What factors affect the combustion-supporting properties of O2? - answer-
Concentration
-Partial Pressure
By what means is air for medical use in the hospital most commonly produced? -
answerFractional distillation
What is the most common and least expensive method for commercial production of
O2? - answerFractional distillation of air
What is the U.S. Food and Drug Administration purity standard for O2? - answer99%
Which of the following methods of producing O2 is commonly used in the home care
setting? - answerPhysical separation
Components of a large medical air compressor include which of the following? - answer-
Drying system
-Reservoir tank
-Pressure-reducing valve
Air for medical use in a hospital should be..? - answer-Particle-free
-Oil-Free
-Dry
Large hospital air compressor systems must be capable of maintaining 50 pounds per
square inch gauge (psig) at what flows? - answer100 L/min
What equipment could be powered by a small diaphragm or turbine air compressor? -
answerSmall-volume medication nebulizer
, CO2 is flammable gas - answerFalse
He is heavier than air - answerFalse
What key property of He makes it useful as a therapeutic gas? - answerLow density
What gas is used to treat conditions causing hypoxic respiratory failure? - answerNO
Compressed gas cylinders are manufactured from.. - answerSeamless steel
Department of Transportation regulations require compressed gas cylinders to be
hydrostatically tested for leaks and expansion every how often? - answer5 to 10 years
During inspection of the shoulder of a compressed gas cylinder, (+) next to the test date
indicates what? - answerIt can be filled to 10% above its service pressure
According to the U.S Department of Commerce, a gas cylinder that is color coded blue
should contain what? - answerN2O
According to the National Institute of Standards and Technology of the U.S. Department
of Commerce, a gas cylinder that is color-coded brown and green should contain what?
- answerO2-He mixture
In the clinical practice, how is a positive identification made of the contents of a medical
gas cylinder? - answerReading the cylinder label
What is the key difference between small compressed gas cylinders (sizes AA to E) and
their larger counterparts (sizes F to K)? - answerSmall gas cylinders use a yoke (not
threaded) connector
What mechanisms do all compressed gas cylinders use to avoid excessively high
buildup of cylinder pressure? - answerPressure-relief mechanism on the valve stem
What gases can be stored in cylinders as liquids at room temperature? - answer-CO2
-N2O
Cylinders of liquid gases are filled according to what specifications? - answerFiling
density
The measured pressure in a liquid-filled cylinder is equivalents to what? - answerThe
pressure of the surface vapor at any given temperature
The measured pressure in a gas-filled cylinder is equivalent to what? - answerThe force
required to compress its volume within the cylinder
What are considered therapeutic gases? - answerO2
O2- NO mixture
O2-He mixture
What is the fire-risk classification of N and CO2? – answer Non-flammable
What medical gases support combustion? - answerO2
N2O
Compressed air
O2 is flammable - answerFalse
What factors affect the combustion-supporting properties of O2? - answer-
Concentration
-Partial Pressure
By what means is air for medical use in the hospital most commonly produced? -
answerFractional distillation
What is the most common and least expensive method for commercial production of
O2? - answerFractional distillation of air
What is the U.S. Food and Drug Administration purity standard for O2? - answer99%
Which of the following methods of producing O2 is commonly used in the home care
setting? - answerPhysical separation
Components of a large medical air compressor include which of the following? - answer-
Drying system
-Reservoir tank
-Pressure-reducing valve
Air for medical use in a hospital should be..? - answer-Particle-free
-Oil-Free
-Dry
Large hospital air compressor systems must be capable of maintaining 50 pounds per
square inch gauge (psig) at what flows? - answer100 L/min
What equipment could be powered by a small diaphragm or turbine air compressor? -
answerSmall-volume medication nebulizer
, CO2 is flammable gas - answerFalse
He is heavier than air - answerFalse
What key property of He makes it useful as a therapeutic gas? - answerLow density
What gas is used to treat conditions causing hypoxic respiratory failure? - answerNO
Compressed gas cylinders are manufactured from.. - answerSeamless steel
Department of Transportation regulations require compressed gas cylinders to be
hydrostatically tested for leaks and expansion every how often? - answer5 to 10 years
During inspection of the shoulder of a compressed gas cylinder, (+) next to the test date
indicates what? - answerIt can be filled to 10% above its service pressure
According to the U.S Department of Commerce, a gas cylinder that is color coded blue
should contain what? - answerN2O
According to the National Institute of Standards and Technology of the U.S. Department
of Commerce, a gas cylinder that is color-coded brown and green should contain what?
- answerO2-He mixture
In the clinical practice, how is a positive identification made of the contents of a medical
gas cylinder? - answerReading the cylinder label
What is the key difference between small compressed gas cylinders (sizes AA to E) and
their larger counterparts (sizes F to K)? - answerSmall gas cylinders use a yoke (not
threaded) connector
What mechanisms do all compressed gas cylinders use to avoid excessively high
buildup of cylinder pressure? - answerPressure-relief mechanism on the valve stem
What gases can be stored in cylinders as liquids at room temperature? - answer-CO2
-N2O
Cylinders of liquid gases are filled according to what specifications? - answerFiling
density
The measured pressure in a liquid-filled cylinder is equivalents to what? - answerThe
pressure of the surface vapor at any given temperature
The measured pressure in a gas-filled cylinder is equivalent to what? - answerThe force
required to compress its volume within the cylinder
