SEE High - Yield Anesthesia Machine,
Equipment, Monitors: Questions with (Correct)
And Verified Answers.Latest Exam 2025
What is the pressure of the high pressure cylinder system? - ANSWER-
Whatever the PSI of the cylinder is. Gets down-regulated at first-stage
regulator
What is the pressure of the pipeline pressure? What about tank
pressure? Implication? - ANSWER-Pipeline = 50psi
Tank = 45psi
Pipeline is slightly higher, such that the anesthesia machine will
naturally preferentially draw supply from pipeline, such that O2 tank
is not utilized until there is a supply failure
What is the pressure of the low pressure system such as the flowmeter,
vaporizers, common gas outlet? - ANSWER-Slightly above atmospheric
1|Page
,What components comprise the intermediate pressure system? -
ANSWER-Pipeline pressure, oxygen pressure failure sensor, oxygen
second=stage regulator, oxygen flush valve, ventilator power inlet
What components comprise the high pressure system? - ANSWER-
Basically just the cylinder and associated regulators and gauges
What is the SPDD model for anesthesia gas delivery to the patient? -
ANSWER-Supply, Processing, Delivery, Disposal
What is the supply component of the SPDD model? - ANSWER-How the
gas enters the anesthesia machine such as the pipeline or tank
What is the processing component of the SPDD model? - ANSWER-How
the anesthesia machine prepares the gases before delivery to the
patient such as flowmeters and vaporizers
What is the delivery component of the SPDD model? - ANSWER-How
the prepared gases are brought to the patient such as the breathing
circuit
What is the disposal component of the SPDD model? - ANSWER-How
the waste gases are gotten rid of, such as the scavenging system
2|Page
,What is the Pin Index Safety System? - ANSWER-Prevents inadvertent
misconnections of gas cylinders to the anesthesia machine
What does the pressure change from the cylinder to intermediate
pressure? - ANSWER-Whatever the PSI of the tank is to 45-50psi
What is the PISS configuration for air? - ANSWER-1, 5
What is the PISS configuration for O2? - ANSWER-2, 5
What is the PISS configuration for N2O? - ANSWER-3, 5
What is full air tank PSI and Liters? - ANSWER-PSI = 1900
L = 625
What is full oxygen tank PSI and Liters? - ANSWER-PSI = 1900
L = 660
What is full N2O tank PSI and Liters? - ANSWER-PSI = 745
L = 1590
What is the formula for determining how much time is left in oxygen
cylinder based on current cylinder PSI? - ANSWER-Take the known
3|Page
, values such as full tank PSI, liters, and current PSI and do the math to
find out current liters left.
Once the amount of liters left is known, divide that value by the
current liter flow rate
Why does N2O exist as a liquid within the cylinder? Implication? -
ANSWER-Because it's critical temperature is above room temperature.
This means that you cannot determine the remaining capacity of N2O
based on PSI, but only by weight. Lastly, once the PSI gauge starts to
fall below 745psi, this typically indicates that the N2O tank is 3/4
empty
What is the oxygen pressure failure device? What is the limitation? -
ANSWER-This notifies the anesthetist that the oxygen pressure is
decreasing in the anesthesia machine via decreased pipeline or
cylinder supply. Limitation is that this only senses PRESSURE, not
actual FiO2 content!
What is the annular space in regards to a flowmeter? - ANSWER-This is
the space between the float and the side of the flowmeter
What is the only type of flowmeter float that is read in the middle? -
ANSWER-Ball
4|Page
Equipment, Monitors: Questions with (Correct)
And Verified Answers.Latest Exam 2025
What is the pressure of the high pressure cylinder system? - ANSWER-
Whatever the PSI of the cylinder is. Gets down-regulated at first-stage
regulator
What is the pressure of the pipeline pressure? What about tank
pressure? Implication? - ANSWER-Pipeline = 50psi
Tank = 45psi
Pipeline is slightly higher, such that the anesthesia machine will
naturally preferentially draw supply from pipeline, such that O2 tank
is not utilized until there is a supply failure
What is the pressure of the low pressure system such as the flowmeter,
vaporizers, common gas outlet? - ANSWER-Slightly above atmospheric
1|Page
,What components comprise the intermediate pressure system? -
ANSWER-Pipeline pressure, oxygen pressure failure sensor, oxygen
second=stage regulator, oxygen flush valve, ventilator power inlet
What components comprise the high pressure system? - ANSWER-
Basically just the cylinder and associated regulators and gauges
What is the SPDD model for anesthesia gas delivery to the patient? -
ANSWER-Supply, Processing, Delivery, Disposal
What is the supply component of the SPDD model? - ANSWER-How the
gas enters the anesthesia machine such as the pipeline or tank
What is the processing component of the SPDD model? - ANSWER-How
the anesthesia machine prepares the gases before delivery to the
patient such as flowmeters and vaporizers
What is the delivery component of the SPDD model? - ANSWER-How
the prepared gases are brought to the patient such as the breathing
circuit
What is the disposal component of the SPDD model? - ANSWER-How
the waste gases are gotten rid of, such as the scavenging system
2|Page
,What is the Pin Index Safety System? - ANSWER-Prevents inadvertent
misconnections of gas cylinders to the anesthesia machine
What does the pressure change from the cylinder to intermediate
pressure? - ANSWER-Whatever the PSI of the tank is to 45-50psi
What is the PISS configuration for air? - ANSWER-1, 5
What is the PISS configuration for O2? - ANSWER-2, 5
What is the PISS configuration for N2O? - ANSWER-3, 5
What is full air tank PSI and Liters? - ANSWER-PSI = 1900
L = 625
What is full oxygen tank PSI and Liters? - ANSWER-PSI = 1900
L = 660
What is full N2O tank PSI and Liters? - ANSWER-PSI = 745
L = 1590
What is the formula for determining how much time is left in oxygen
cylinder based on current cylinder PSI? - ANSWER-Take the known
3|Page
, values such as full tank PSI, liters, and current PSI and do the math to
find out current liters left.
Once the amount of liters left is known, divide that value by the
current liter flow rate
Why does N2O exist as a liquid within the cylinder? Implication? -
ANSWER-Because it's critical temperature is above room temperature.
This means that you cannot determine the remaining capacity of N2O
based on PSI, but only by weight. Lastly, once the PSI gauge starts to
fall below 745psi, this typically indicates that the N2O tank is 3/4
empty
What is the oxygen pressure failure device? What is the limitation? -
ANSWER-This notifies the anesthetist that the oxygen pressure is
decreasing in the anesthesia machine via decreased pipeline or
cylinder supply. Limitation is that this only senses PRESSURE, not
actual FiO2 content!
What is the annular space in regards to a flowmeter? - ANSWER-This is
the space between the float and the side of the flowmeter
What is the only type of flowmeter float that is read in the middle? -
ANSWER-Ball
4|Page
