DR. KOST ANESTHESIA MACHINE LECTURE
QUESTIONS & ANSWERS
nitrous oxide: liquid
oxygen: gaseous - Answer -What gases are stored in liquid form vs gaseous?
the pressure in the tank doesn't decrease until the tank is almost empty - Answer -
Since N2O is stored in liquid form what does this mean about the pressure?
the motor safety division of the department of transportation (DOT) - Answer -Who is
responsible for the regulation of the transportation of gas tanks?
the conical depression, which is on the valve - Answer -What receives the retaining
screw on the anesthesia machine?
the stem - Answer -What turns the cylinder on?
Pin Index Safety System - Answer -What is the PISS?
prevents interchangeability of the cylinders on the cylinder yoke - Answer -What does
the PISS do?
spring, rupture/burst disc, woods metal - Answer -What are the three types of safety
systems in case of fire?
bismuth, tin, cadmium, and lead; cylinder is surrounded by fire-Woods metal is used as
a pressure relief safety device, when temperature is reached woods metals low melting
point causes the the plug to melt allowing contents to escape the cylinder (all or none
phenomeneom) - Answer -What is woods metal made up of, when is it activated?
proportionally to the amount used/left in cylinder (pressure drops as amount in cylinder
drops) - Answer -How does the pressure in O2 tank decrease?
PSI stays the same until there is very little liquid left - Answer -How is N2O's pressure
decreased in a tank?
750 - Answer -How many PSI in a full (and partial) tank of N2O?
every 5 years! (with special permit it's 10) - Answer -How often do tanks need
checked?
fractional distillation of liquified air - Answer -How is O2 manufactured/made?
copper/wrought copper - Answer -What are hospital pipeline systems made out of?
, Eugene Bourdon (Bourdon pressure gauges) - Answer -Pressure gauges in the
anesthesia machine are built on whose principle? (what French physicist)
floating check valve - Answer -What type of valve is in the hanger yokes?
diaphragm type valve - Answer -What type of valve is the 1st stage regulator?
takes the PSI from 2,000 PSI to 45 PSI - Answer -What does the 1st stage regulator
do?
GE - Answer -Which anesthesia machine has the second stage regulator?
to make the link 25 proportioning system work - Answer -Why is the second stage
regulator in the machine?
links nitrous oxide and oxygen flows (prevents the final inspired oxygen concentration
from being less than 25%, prevents a hypoxic mixture from being administered to the
patient) - Answer -What is the link 25 proportioning system used for?
-It starts to open in extreme temperatures
-Then the spring-loaded device will RECLOSE the cylinder to prevent gas escape once
the conditions return to normal
-NOT all or none - Answer -How does the spring-loaded pressure relief safety device
work?
A predetermined temperature is reached and the safety disc ruptures, allowing the
contents of the cylinder to escape. (ALL or none) - Answer -How does a rupture/burst
disc pressure relief device work?
the port - Answer -Where does the gas leave the cylinder from?
port - where the gas exits - Answer -Name and function:
port - where the gas exits - Answer -Name and function:
conical depression - receives the retaining screws of the yoke and supports the cylinder
on the hanger yoke - Answer -Name and function:
international: white
US: green - Answer -What is the international color for O2 vs the US color for O2?
international: light blue
US: light blue - Answer -What is the color for N2O? international and US
air: 1,5
QUESTIONS & ANSWERS
nitrous oxide: liquid
oxygen: gaseous - Answer -What gases are stored in liquid form vs gaseous?
the pressure in the tank doesn't decrease until the tank is almost empty - Answer -
Since N2O is stored in liquid form what does this mean about the pressure?
the motor safety division of the department of transportation (DOT) - Answer -Who is
responsible for the regulation of the transportation of gas tanks?
the conical depression, which is on the valve - Answer -What receives the retaining
screw on the anesthesia machine?
the stem - Answer -What turns the cylinder on?
Pin Index Safety System - Answer -What is the PISS?
prevents interchangeability of the cylinders on the cylinder yoke - Answer -What does
the PISS do?
spring, rupture/burst disc, woods metal - Answer -What are the three types of safety
systems in case of fire?
bismuth, tin, cadmium, and lead; cylinder is surrounded by fire-Woods metal is used as
a pressure relief safety device, when temperature is reached woods metals low melting
point causes the the plug to melt allowing contents to escape the cylinder (all or none
phenomeneom) - Answer -What is woods metal made up of, when is it activated?
proportionally to the amount used/left in cylinder (pressure drops as amount in cylinder
drops) - Answer -How does the pressure in O2 tank decrease?
PSI stays the same until there is very little liquid left - Answer -How is N2O's pressure
decreased in a tank?
750 - Answer -How many PSI in a full (and partial) tank of N2O?
every 5 years! (with special permit it's 10) - Answer -How often do tanks need
checked?
fractional distillation of liquified air - Answer -How is O2 manufactured/made?
copper/wrought copper - Answer -What are hospital pipeline systems made out of?
, Eugene Bourdon (Bourdon pressure gauges) - Answer -Pressure gauges in the
anesthesia machine are built on whose principle? (what French physicist)
floating check valve - Answer -What type of valve is in the hanger yokes?
diaphragm type valve - Answer -What type of valve is the 1st stage regulator?
takes the PSI from 2,000 PSI to 45 PSI - Answer -What does the 1st stage regulator
do?
GE - Answer -Which anesthesia machine has the second stage regulator?
to make the link 25 proportioning system work - Answer -Why is the second stage
regulator in the machine?
links nitrous oxide and oxygen flows (prevents the final inspired oxygen concentration
from being less than 25%, prevents a hypoxic mixture from being administered to the
patient) - Answer -What is the link 25 proportioning system used for?
-It starts to open in extreme temperatures
-Then the spring-loaded device will RECLOSE the cylinder to prevent gas escape once
the conditions return to normal
-NOT all or none - Answer -How does the spring-loaded pressure relief safety device
work?
A predetermined temperature is reached and the safety disc ruptures, allowing the
contents of the cylinder to escape. (ALL or none) - Answer -How does a rupture/burst
disc pressure relief device work?
the port - Answer -Where does the gas leave the cylinder from?
port - where the gas exits - Answer -Name and function:
port - where the gas exits - Answer -Name and function:
conical depression - receives the retaining screws of the yoke and supports the cylinder
on the hanger yoke - Answer -Name and function:
international: white
US: green - Answer -What is the international color for O2 vs the US color for O2?
international: light blue
US: light blue - Answer -What is the color for N2O? international and US
air: 1,5
