Compressed Gasses/Vaporizers (Kane) Exam 3 Flashcards
What is the primary purpose of oxygen cylinders?
A. Storing medical gases
B. Providing oxygen in primary and emergency situations
C. Measuring atmospheric pressure
D. Storing carbon dioxide for emergency use
B. Providing oxygen in primary and emergency situations
According to Kane:
Used two ways:
Primary sources- For transport
Emergency sources - if pipelines fails and none on wall outlets
Slide 2
In the U.S., how are oxygen cylinders marked?
A. By shape
B. By size
C. By color
D. By material
C. By color
Color coded and always the same color related to the gas on the tank, wall outlet, the picture in front of the machine showing cylinder pressure
O2 – Green
Air – Yellow
Nitrous – Blue
Slide 2
What does “psi” stand for?
A) Pressure per square inch
B) Pounds per square inch
C) Pressure per standard inch
D) Pounds per standard inch
B) Pounds per square inch
Slide 3
Which statement correctly describes a non-liquified gas?
A. A gas that becomes liquid at low pressures
B. A gas that does not liquefy at ordinary ambient temperatures regardless of the pressure applied
C. A gas that liquefies at ordinary ambient temperatures regardless of the pressure applied
D. A gas that becomes solid at ambient temperatures
B. A gas that does not liquefy at ordinary ambient temperatures regardless of the pressure applied
Slide 3
Which of the following are examples of non-liquified gases? Select 3
A. Nitrous oxide
B. Carbon dioxide
C. Oxygen
D. Air
E. Helium
C. Oxygen
D. Air
E. Helium
Slide 3
True or False:
Liquefied gases become liquid to a large extent in containers at low temperature and at pressures from 15-1200 psi.
False
Liquefied gases become liquid to a large extent in containers at ambient temperature and at pressures from 25-1500 psi.
Slide 3
Which of the following gases can become liquid at ambient temperature and pressures from 25-1500 psi? Select 2
A. Oxygen
B. Carbon dioxide
C. Helium
D. Nitrous oxide
B. Carbon dioxide
D. Nitrous oxide
Slide 3
Which government agency is responsible for ensuring the purity of medical gases?
A. DOT
B. OSHA
C. FDA
D. National Fire Protection Association
C. FDA
oversees the purities
Allowed a minute amount per square inch of junk allowed
Slide 4
What aspects of medical gases are regulated by the Department of Transportation (DOT)? Select 4
A. Purity
B. Marking
C. Labeling
D. Storage
E. Fire safety
F. Handling
B. Marking
C. Labeling
D. Storage
F. Handling
Slide 4
Which government agency focuses on employee safety in relation to medical gases?
A. FDA
B. DOT
C. OSHA (Department of Labor)
D. National Fire Protection Association
C. OSHA (Department of Labor)
Slide 4
True or False:
The National Fire Protection Association is involved in setting standards for fire safety related to medical gases.
True
Oxygen supports fire, does not cause fire
Slide 4
What materials can the body of a gas cylinder be made from?
A) Steel, aluminum, copper
B) Steel, steel carbon fiber, aluminum
C) Aluminum, brass, bronze
D) Steel carbon fiber, copper, brass
B) Steel, steel carbon fiber, aluminum
According to Kane:
A lot of tanks made out of steel - cheap
Some Aluminum for places that have magnet like MRI
Slide 5
Which type of cylinder/tank is MRI safe?
aluminum
Slide 5
What type of bases can a gas cylinder have?
A) Flat or concave
B) Convex or concave
C) Flat or convex
D) Round or flat
A) Flat or concave
like an INNIE belly button
Not convex like a weebles wobble..
Slide 5
What feature is found on the neck of a gas cylinder?
A) Smooth surface
B) Welded ring
C) Screw threads
D) Rubber gasket
C) Screw threads
Slide 5
Which of the following statements about the check valve in a gas cylinder are true? (Select 3)
A) The check valve is attached to the neck of the cylinder.
B) The check valve prevents the cylinder from being refilled.
C) The check valve allows for the refilling and discharge of gas.
D) Check valves are commonly made from bronze or brass.
E) The check valve is located at the bottom of the cylinder.
F) The primary function of the check valve is to measure gas pressure.
A) The check valve is attached to the neck of the cylinder.
C) The check valve allows for the refilling and discharge of gas.
D) Check valves are commonly made from bronze or brass.
Slide 5
What is the primary function of the handle on a gas cylinder?
A) To measure the pressure
B) To open/close the cylinder
C) To attach the cylinder to a surface
D) To regulate gas flow
B) To open/close the cylinder
Slide 6
What should be attached to every gas cylinder?
A) Pressure gauge
B) Temperature sensor
C) Handle
D) Valve
C) Handle
open and close cylinder
Slide 6
What is the primary function of the pressure relief device on a gas cylinder?
A) To regulate gas flow
B) To contain contents to the inside of the cylinder if pressure increases to a dangerous level
C) To vent cylinder contents to the atmosphere if pressure increases to a dangerous level
D) To prevent gas leakage
C) To vent cylinder contents to the atmosphere if pressure increases to a dangerous level
Slide 6
Which of the following are a component of the pressure relief device on a gas cylinder? (select 3)
A) Disc that bursts
B) Fusible plug that melts
C) Valve that closes
D) Valve that opens
E) Fusible plug that bursts
A) Disc that bursts 🤯
B) Fusible plug that melts🫠
D) Valve that opens🔧
Slide 6
What is another name for the pressure relief device on a gas cylinder?
A) Regulator
B) Safety valve
C) Pressure gauge
D) Safety relief
D) Safety relief
Slide 6
Where are the holes on the cylinder valve positioned in the Pin Index Safety System?
A) Around the top of the cylinder
B) In an arc below the outlet port
C) Along the side of the cylinder
D) At the base of the cylinder
B) In an arc below the outlet port
Slide 7
What is the purpose of the holes on the cylinder valve in the Pin Index Safety System?
A) To release gas from the pins
B) To position the cylinder correctly
C) To fit pins from the yoke or pressure regulator
D) To measure gas pressure out of the pins
C) To fit pins from the yoke or pressure regulator
preventing crossover
Ex: O2 tank has a 2,5 pin hole – the O2 hanger will have 2,5 fittings → will not go into a nitrogen tank/pin
Slide 7
True or False:
The smallest cylinder size is labeled as “a”.
True
Get grandma to the store and back
Slide 8
Which cylinder size is most commonly used on anesthesia machines?
A) A
B) D
C) E
D) H
C) E
AnesthEEEEEEsia
Slide 8
Which cylinder size is typically used for transport?
A) A
B) D
C) E
D) H
B) D
skinner and a little bit longer…🤭
Slide 8
Which cylinder sizes are typically used as large tanks for refilling?
A) A and B
B) C and D
C) E and F
D) G and H
D) G and H
Girthy and Hefty
not day to day use
Slide 8, lecture
What is the approximate pressure at which gas is supplied to the machine from the cylinder?
A) 30 psi
B) 45 psi
C) 60 psi
D) 75 psi
B) 45 psi
Slide 8
True or False:
The gas supply from the cylinder on the back of our machines must remain open when not in use.
False
The gas supply from the cylinder must remain closed when not in use.
If you leave them open and the wall pressure fails, there won’t be an audible alarm until the cylinder on your machine is completely empty and then its really bad..
Slide 8
What happens to the pressure of a non-liquified gas as the volume decreases?
A) The pressure increases
B) The pressure remains the same
C) The pressure decreases
D) The pressure fluctuates
C) The pressure decreases
As O2, Air and Helium pressure decreases, the volume decreases
Slide 9
Which of the following statements about the oxygen pressure and gas volume in the cylinders are true with non-liquified gas? (Select 4)
A) A full cylinder has an oxygen pressure of 1900 psig and a volume of 600 L.
B) A half-full cylinder has an oxygen pressure of 950 psig and a volume of 330 L.
C) A quarter-full cylinder has an oxygen pressure of 475 psig and a volume of 165 L.
D) An empty cylinder has an oxygen pressure of 0 psig and a volume of 0 L.
E) A full cylinder has an oxygen pressure of 600 psig and a volume of 1900 L.
A) A full cylinder has an oxygen pressure of 1900 psig and a volume of 600 L.
B) A half-full cylinder has an oxygen pressure of 950 psig and a volume of 330 L.
C) A quarter-full cylinder has an oxygen pressure of 475 psig and a volume of 165 L.
D) An empty cylinder has an oxygen pressure of 0 psig and a volume of 0 L.
Slide 9
For liquefied gas, what does the pressure depend on?
A) Volume remaining
B) Cylinder size
C) Vapor pressure
D) Temperature
C) Vapor pressure
Slide 10
True or False:
For liquefied gas, the pressure is a good indication of the remaining volume.
False
pressure is NOT an indication of remaining volume
Slide 10
At what pressure does a full cylinder (1590L) of nitrous oxide typically read?
A) 600 psig
B) 745 psig
C) 500 psig
D) 350 psig
B) 745 psig
Slide 10
Which of the following statements about the pressure of liquefied gas cylinders are true? (Select 2)
A) The pressure decreases as the volume decreases.
B) The pressure increases as the liquid decreases.
C) The pressure depends on vapor pressure.
D) The pressure is a reliable indicator of the remaining volume.
E) The pressure drops significantly once it is nearly empty.
C) The pressure depends on vapor pressure.
E) The pressure drops significantly once it is nearly empty. - only in vapor phase at this point
Slide 10
Which of the following pieces of information are required by DOT regulations to be present on a gas cylinder? (Select 5)
A) Service pressure
B) Operating temperature
C) Test date
D) Diamond-shaped label indicating hazard
E) Name and address of manufacturer
F) Expiration date of contents
G) Square-shaped label indicating color
A) Service pressure
C) Test date
D) Diamond-shaped label indicating hazard
E) Name and address of manufacturer
F) Expiration date of contents
Slide 11
What substances should valves, regulators, and gauges never come into contact with?
A) Oils, greases, water
B) Oils, greases, lubricants
C) Dust, grease lubricants
D) Dust, grease, water
B) Oils, greases, lubricants
these can cause fire spread
Slide 12
What is the maximum temperature that gas cylinders should be subjected to?
A) 30°C (86°F)
B) 40°C (104°F)
C) 54°C (130°F)
D) 60°C (140°F)
C) 54°C (130°F)
Slide 12
What should be done to ensure the connections on gas cylinders are safe? Select 2
A) Keep them loose for easy adjustment
B) Valve kept closed at all times
C) Ensure connections are always tight
D) Cover them with plastic
B) Valve kept closed at all times
C) Ensure connections are always tight
Slide 12
What are recommended practices for handling gas cylinders? Select 3
A) Cannot be dropped, drug, slid
B) Sliding them across the floor
C) Keeping the valve open at all times
D) Never crossing use hoses, regulators, gauges
E) Markings, labels must not be altered
F) Cross use hoses, regulators, gauges
A) Cannot be dropped, drug, slid
D) Never crossing use hoses, regulators, gauges
E) Markings, labels must not be altered
…don’t wipe off the ID on a gun… 🔫
Slide 12
Why should gas cylinders be kept properly secured?
A) To prevent gas leakage
B) To ensure accurate pressure readings
C) To prevent them from falling
D) To keep them clean
C) To prevent them from falling
Slide 12
What is one of the key requirements for storage rooms for gas cylinders? Select 2
A) High humidity
B) Adequate ventilation
C) Not exposed to dim lighting or fumes
D) Not exposed to corrosive chemicals, fumes
B) Adequate ventilation
D) Not exposed to corrosive chemicals, fumes
Slide 13
What type of signs should be present in storage rooms for gas cylinders?
A) “Wet Floor” and “No Smoking”
B) “No Smoking” and “No Combustibles”
C) “Exit” and “Entrance”
D) “No Entry” and “Authorized Personnel Only”
B) “No Smoking” and “No Combustibles”
Slide 13
How should gas cylinders be stored in bins?
Select 2
A) Horizontally
B) In stacks
C) Upright
D) Full separated from empty
C) Upright
D) Full separated from empty
Full to empty tags
Slide 13
Which of the following is undesirable in the storage rooms for gas cylinders?
A) Good lighting
B) Wrapping or drapes
C) Clear signage
D) Adequate ventilation
B) Wrapping or drapes
flammable
Slide 13
Which of the following should be inspected on a gas cylinder before use?
A) The label, pin index holes, color of pressure relief handle
B) The label, pin index holes, regulator, and valve outlet
C) The label, pin index holes, material of the cylinder
D) The label, pin index holes, expiration date
B) The label, pin index holes, regulator, and valve outlet
The tank is intact, neck isn’t crooked, greasy/grimy
Slide 14
What should be done before bringing a gas cylinder to a patient? (Select 3)
A) Close the valve
B) Open the valve
C) Ensure washer is in place
D) Remove a tamper seal
B) Open the valve - in the hallway
C) Ensure washer is in place - after you have removed the tamper seal. You only need ONE. Two washers creates too much distance between the yolk and pins washer ensures proper placement
D) Remove a tamper seal
Slide 14
True or False:
Opening the valve slowly on a gas cylinder reduces the risk of rapid gas release.
True
Slide 14
True or False
The valve outlet should be faced towards people when opening a gas cylinder to ensure they can hear the gas flow.
False
The valve outlet should be faced away from people when opening a gas cylinder
Slide 14
Which of the following are true before using gas cylinders? (Select 2)
A) Check service pressure before using the gas cylinder.
B) Ignore small leaks if they seem minor.
C) Use soapy water to find leaks.
D) Listen for hissing sounds to detect leaks.
E) Correct leaks before using the cylinder.
F) Service pressure can be ignored.
A) Check service pressure before using the gas cylinder.
E) Correct leaks before using the cylinder.
Screw things together better, readjust washer
Slide 14
What is the primary purpose of pipeline systems in medical settings?
A) To deliver flammable gases
B) To deliver non-flammable gases
C) To store medical equipment
D) To monitor patient vital signs
B) To deliver non-flammable gases
to anesthetizing locations and other pt care areas
Air, O2, Nitrous
Slide 15
Which components of the pipeline systems recieve and maintain an approximate pressure of 50 psi? (select 2)
A) Central supply
B) Piping
C) Terminal units
D) Gas cylinders
B) Piping recieved at 50psi
C) Terminal units maintain 50psi
Slide 15
Where can the central supply be located? (select 2)
A) Outdoors in an enclosure
B) The parking lot
C) Across the street from the hospital
D) In the patient’s room
E) Indoors in a secure area
A) Outdoors in an enclosure
E) Indoors in a secure area
Slide 16
How many days of air tanks must a “bank” contain in central supply at minimum?
A) 1 day supply
B) 2 days supply
C) 3 days supply
D) 5 days supply
B) 2 days supply
Slide 16
Match the following components of the central supply system with their descriptions:
A) Primary bank
B) Secondary bank
C) Reserve supply
- Backup supply.
- Contains the main supply of gas.
- Additional supply located in secondary location
A-2
B-1
C-3
Slide 16
Which cylinders are used for gaseous oxygen supply source?
A) A and B cylinders
B) C and D cylinders
C) G and H cylinders
D) K and L cylinders
C) G and H cylinders
Slide 17
Matching
Main lines - B. Connect gas source to risers.
Risers - A. Vertical pipes connecting main line with branch lines on each level.
Branch lines - C. Sections supplying a room or group of rooms on one level of the facility.
Terminal unit is the wall unit at the head of the bed in the OR, ICU, ER
Slide 18
Which of the following best describes the role of shut-off valves in a medical gas piping system?
A) To regulate the flow of gas throughout the entire system
B) To permit specific areas to be isolated
C) To increase the pressure of gas in the system
D) To permanently close off gas supply to the building
B) To permit specific areas to be isolated for maintenance or issues
Where are area alarm systems typically found?
A) Administrative offices
B) Critical life support areas
C) Storage rooms
D) Waiting areas
B) Critical life support areas
Slide 20
True or False:
The nipple and nut in terminal units do not vary in bore and diameter.
False
The nipple and nut in terminal units vary in bore and diameter. This helps prevent cross matching
Slide 21
What are key advantages of using quick connectors in a gas distribution system?
Select 2
A) They require specialized tools for connection
B) They allow connection with one or both hands without tools
C) They are permanently fixed in place
D) They are more convenient
B) They allow connection with one or both hands without tools
D) They are more convenient
Slide 22
Which of the following is NOT an outlet type for gas distribution?
A) Wall
B) Floor-mounted
C) Ceiling-mounted
D) Ceiling column
B) Floor-mounted
Outlet types are Wall, Ceiling-mounted, Ceiling column
Slide 23
What is the primary function of a vaporizer in a medical setting?
A) To compress gases for anesthetic use
B) To change vapor to liquid anesthetic agent
C) To change liquid anesthetic agent to vapor
D) To store gases in liquid form
C) To change liquid anesthetic agent to vapor
Slide 25
According to Dalton’s law, the partial pressures of gases in a mixture:
A) Are subtracted from the total pressure
B) Sum up to the total pressure
C) Are independent of each other
D) Are greater than the total pressure
B) Sum up to the total pressure
Slide 28
Matching
A) Halothane matches with 3) Fluothane and i) 243
B) Isoflurane matches with 4) Forane and iiI) 238
C) Desflurane matches with 1) Suprane and ii) 669
D) Sevoflurane matches with 2) Ultane and iv) 157
…remember the trade name…
Slide 29
What is the newer method of regulating vapor concentration in variable bypass vaporizers?
A) Bubble-through
B) Flow-over
C) Spray-over
D) Condensation
B) Flow-over
Baffles are saturated in liquid and the FGF can pick up more vapor from the surface and deliver high MAC
Bubble-through is older and in the liquid part of the vapor chamber they had mesh. The FGF flow went into liquid and bubbled through
Slide34/35
Which of the following statements are true about temperature compensation in vaporizers? Select 2
A) It manually adjusts the splitting ratio
B) Splitting ratio changes as temperature changes.
C) It automatically adjusts the splitting ratio.
D) It maintains a constant liquid volume.
B) Splitting ratio changes as temperature changes.
C) It automatically adjusts the splitting ratio
Temperature sensing device inside the vaporizer- as the temp increases, there is more vapor in the chamber, then vapor pressure moves the temperature lever. That regulates the vapor pressure.
Slide 36
Why is it unlikely to fill a vaporizer with an incorrect agent?
A) Vaporizers have universal filling systems.
B) Filling systems are agent specific.
C) Monitors are not required for detection.
D) Keys are not color-coded.
B) Filling systems are agent specific.
Slide 38
What feature acts as a failsafe to prevent incorrect filling of vaporizers?
A) Universal filling nozzle
B) Color coded bottles
C) Keyhole for vapor container
D) Pressure-sensitive valve
C) Keyhole for vapor container
Kane - Failsafe is a keyhole shape for vapor container. Key is color coded for each different gas
Slide 38 lecture
What is the relationship between vapor pressure and barometric pressure?
A) Vapor pressure depends on barometric pressure
B) Vapor pressure is independent of barometric pressure
C) Vapor pressure is inversely proportional to barometric pressure
D) Vapor pressure is equal to barometric pressure
B) Vapor pressure is independent of barometric pressure
Vaporizers are always calculated at SEA level
Slide 43
Which of the following actions can lead to tipping of vaporizers and causing excessive liquid to enter the bypass chamber?
Select 3
A) Incorrect removal
B) Incorrect transportation
C) Incorrect filling
D) Incorrect replacement
E) High flow rates
F) Low flow rates
A) Incorrect removal
B) Incorrect transportation
D) Incorrect replacement
Slide 44
An interlock device in vaporizers prevents more than one ________ from being turned on at a time.
Options:
A) valve
B) vaporizer
C) control knob
D) pressure gauge
B) vaporizer
Its all about the valves seating or being compressed and released
Slide 49
Back to work ya’ll
