Question 1

What is the PISS index hole position for O₂?

Accepted Answer

According to the PISS index, the first letter (O) indicates the hole position of 2, the third letter (S) indicates the hole position of 5, and the fifth letter (1) indicates the hole position of 5. Therefore, the answer is B (2 and 5).

Question 2

What is the primary purpose of indexed connector systems?

Accepted Answer

The primary purpose of indexed connector systems is to prevent inadvertent misconnections between equipment. They ensure that only compatible connectors are joined together, preventing potential damage or harm caused by incompatible connections.

Question 3

Which of the following is false about ASSS standards?

Accepted Answer

The answer of Which of the following is false about...

Question 4

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

Accepted Answer

The components of a liquid O₂ bulk storage tank include inner and outer steel shells separated by a vacuum (I), a safety system that vents O₂ if warming occurs (II), a vaporizer system that converts liquid O₂ to gas (III), and pressure-reducing valves to lower pressure to 50 psig (IV). Therefore, options A, B, and D are incorrect as they do not include all the components.

Question 5

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

Accepted Answer

The gas pressure in a central piping system normally is reduced to the standard working pressure of 50 psig at the bulk storage location.

Question 6

You must connect a large-volume nebulizer to a bedside compressed-air outlet through a flowmeter. You have only standard O₂ flowmeters available. Which of the following actions is appropriate?

Accepted Answer

Using an O₂-to-air DISS adapter is the appropriate action because it provides a secure connection between the flowmeter and the compressed-air outlet. Piping tape and petroleum jelly seals are not suitable for connecting medical equipment, and attempting to cross-thread the flowmeter directly onto the air outlet is unsafe and may cause damage to the equipment.

Question 7

Why are zone valves incorporated into a hospital's central gas piping systems? I.to terminate O₂delivery to an area in case of fire II.to allow selective maintenance without shutting the system down III.to allow variable pressure reduction throughout the system

Accepted Answer

Zone valves are used in hospitals to terminate the delivery of gas to a specific area in case of fire and also allow for selective maintenance without shutting down the entire system. Option III is incorrect as zone valves are not used for variable pressure reduction.

Question 8

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

Accepted Answer

The NFPA standard for bulk liquid oxygen systems requires that the reserve supply be equal to the average gas use of 1 day to ensure continuity of supply in case of system failure or maintenance.

Question 9

What safety system is designed to prevent accidental interchanging among low-pressure (less than 200 psig) connectors such as those found on flowmeters and ventilators?

Accepted Answer

The DISS (Diameter Index Safety System) is a safety system specifically designed to prevent accidental interchanging among low-pressure connectors such as those found on flowmeters and ventilators. It uses a specific thread design that is incompatible with other connectors to ensure that only connectors with matching thread designs can be connected. The other options, PISS and ASSS, are not actual safety systems, and CGA (Compressed Gas Association) focuses on high-pressure connectors, not low-pressure connectors.

Question 10

Structural requirements for the central piping systems that are used in hospitals to distribute gases are established by whom?

Accepted Answer

The National Fire Protection Association (NFPA) establishes structural requirements for central piping systems used in hospitals to distribute gases.

Question 11

You are planning a patient transport that will take about 1 $\frac { 1 } { 2 }$ hours. The patient requires manual ventilation with 10 L/min of O₂. What is the minimum number of full E cylinders you would take with you?

Accepted Answer

The answer of You are planning a patient transport that...

Question 12

One cu/ft of liquid O₂is the equivalent of about how many cu/ft of gaseous O₂?

Accepted Answer

Liquid oxygen expands significantly when it vaporizes, with one cubic foot of liquid oxygen converting to approximately 860 cubic feet of gaseous oxygen.

Question 13

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

Accepted Answer

Adopted in the United States and Canada, the ASSS provides standards for threaded high-pressure connections between large compressed gas cylinders (sizes F through H/K) and their attachments.

Question 14

Compared to portable cylinders, a centrally located, piped-in bulk O₂ system has which of the following advantages? I.no need for a backup or reserve system II.more convenient and less hazardous than cylinders III.oxygen already reduced to its working pressure IV.less risk of the O₂ supply being depleted

Accepted Answer

A centrally located, piped-in bulk O₂ system has the advantages of being more convenient and less hazardous than cylinders, oxygen already being reduced to its working pressure, and less risk of the O₂ supply being depleted. Additionally, it eliminates the need for a backup or reserve system. Therefore, options II, III, and IV are correct, making the answer D.

Question 15

What device is used to reduce the pressure and control the flow of a compressed medical gas?

Accepted Answer

A regulator is specifically designed to reduce the pressure and control the flow of compressed medical gas. While the other options may be involved in gas delivery systems, they may not serve the primary purpose of pressure reduction and flow control.

Question 16

Which of the following statements is FALSE about PISS standards?

Accepted Answer

PISS (Pin Index Safety System) standards ensure that the positions of pins and pinholes vary for each gas to prevent the wrong gas from being connected to the system.

Question 17

Where do respiratory therapists typically find DISS connections?
I.at the outlets of pressure-reducing valves attached to cylinders
II.at the nurse station
III.at the station outlets of central piping systems
IV.at the inlets of blenders, flowmeters, ventilators, and other pneumatic equipment

Accepted Answer

Respiratory therapists typically find DISS connections at the outlets of pressure-reducing valves attached to cylinders, at the nurse station, and at the inlets of blenders, flowmeters, ventilators, and other pneumatic equipment. These connections are used to supply medical gases such as oxygen and air to patients. The connections at central piping systems are not as commonly used by respiratory therapists as other locations mentioned. Therefore, option C contains all the correct answers.

Question 18

Which of the following components are common to a standard compressed gas cylinder manifold system?
I.automatic switch-over control
II.pressure-reducing valves
III.primary and reserve bank
IV.alarm system

Accepted Answer

A standard compressed gas cylinder manifold system typically includes an automatic switch-over control to switch between primary and reserve banks, pressure-reducing valves to control the gas pressure, a primary and reserve bank for gas storage, and an alarm system to alert for issues such as low pressure or leaks.

Question 19

What is the greatest potential problem with quick-connect DISS systems (such as Ohio, NCG, or Puritan)?

Accepted Answer

The greatest potential problem with quick-connect DISS systems is incompatibility among different manufacturers. This can cause issues with connecting different pieces of equipment and compromise the overall functionality and safety of the system. It is important to ensure that all equipment is compatible and from the same manufacturer to minimize this risk.

Question 20

Unlike CO₂ or N₂O, O₂ cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Accepted Answer

Oxygen has a critical temperature well below room temperature (-181.4° F [-118.6° C]). Liquid O₂ must continually be stored below this temperature, or it reverts to its gaseous state.

Quiz 37: Storage and Delivery of Medical Gases

What is the PISS index hole position for O₂?

What is the primary purpose of indexed connector systems?

Which of the following is false about ASSS standards?

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

You must connect a large-volume nebulizer to a bedside compressed-air outlet through a flowmeter. You have only standard O₂ flowmeters available. Which of the following actions is appropriate?

Why are zone valves incorporated into a hospital's central gas piping systems? I.to terminate O₂delivery to an area in case of fire II.to allow selective maintenance without shutting the system down III.to allow variable pressure reduction throughout the system

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

What safety system is designed to prevent accidental interchanging among low-pressure (less than 200 psig) connectors such as those found on flowmeters and ventilators?

Structural requirements for the central piping systems that are used in hospitals to distribute gases are established by whom?

You are planning a patient transport that will take about 1 $\frac { 1 } { 2 }$ hours. The patient requires manual ventilation with 10 L/min of O₂. What is the minimum number of full E cylinders you would take with you?

One cu/ft of liquid O₂is the equivalent of about how many cu/ft of gaseous O₂?

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

What device is used to reduce the pressure and control the flow of a compressed medical gas?

Which of the following statements is FALSE about PISS standards?

Where do respiratory therapists typically find DISS connections? I.at the outlets of pressure-reducing valves attached to cylinders II.at the nurse station III.at the station outlets of central piping systems IV.at the inlets of blenders, flowmeters, ventilators, and other pneumatic equipment

Which of the following components are common to a standard compressed gas cylinder manifold system? I.automatic switch-over control II.pressure-reducing valves III.primary and reserve bank IV.alarm system

What is the greatest potential problem with quick-connect DISS systems (such as Ohio, NCG, or Puritan) ?

Unlike CO₂ or N₂O, O₂ cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Quiz 37: Storage and Delivery of Medical Gases

What is the PISS index hole position for O2?

What is the primary purpose of indexed connector systems?

Which of the following is false about ASSS standards?

What do the components of a liquid O2 bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O2 if warming occurs III.vaporizer system that converts liquid O2 to gas IV.pressure-reducing valves to lower pressure to 50 psig

The pressure of O2 or air in a bulk supply system is reduced to what standard working pressure?

You must connect a large-volume nebulizer to a bedside compressed-air outlet through a flowmeter. You have only standard O2 flowmeters available. Which of the following actions is appropriate?

Why are zone valves incorporated into a hospital's central gas piping systems? I.to terminate O2 delivery to an area in case of fire II.to allow selective maintenance without shutting the system down III.to allow variable pressure reduction throughout the system

The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which of the following?

What safety system is designed to prevent accidental interchanging among low-pressure (less than 200 psig) connectors such as those found on flowmeters and ventilators?

Structural requirements for the central piping systems that are used in hospitals to distribute gases are established by whom?

You are planning a patient transport that will take about 1 12\frac { 1 } { 2 }21​ hours. The patient requires manual ventilation with 10 L/min of O2. What is the minimum number of full E cylinders you would take with you?

One cu/ft of liquid O2 is the equivalent of about how many cu/ft of gaseous O2?

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

What device is used to reduce the pressure and control the flow of a compressed medical gas?

Which of the following statements is FALSE about PISS standards?

Where do respiratory therapists typically find DISS connections? I.at the outlets of pressure-reducing valves attached to cylinders II.at the nurse station III.at the station outlets of central piping systems IV.at the inlets of blenders, flowmeters, ventilators, and other pneumatic equipment

Which of the following components are common to a standard compressed gas cylinder manifold system? I.automatic switch-over control II.pressure-reducing valves III.primary and reserve bank IV.alarm system

What is the greatest potential problem with quick-connect DISS systems (such as Ohio, NCG, or Puritan) ?

Unlike CO2 or N2O, O2 cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

What is the PISS index hole position for O₂?

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

You must connect a large-volume nebulizer to a bedside compressed-air outlet through a flowmeter. You have only standard O₂ flowmeters available. Which of the following actions is appropriate?

Why are zone valves incorporated into a hospital's central gas piping systems? I.to terminate O₂delivery to an area in case of fire II.to allow selective maintenance without shutting the system down III.to allow variable pressure reduction throughout the system

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

You are planning a patient transport that will take about 1 $\frac { 1 } { 2 }$ hours. The patient requires manual ventilation with 10 L/min of O₂. What is the minimum number of full E cylinders you would take with you?

One cu/ft of liquid O₂is the equivalent of about how many cu/ft of gaseous O₂?

Unlike CO₂ or N₂O, O₂ cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?