Gas Machine

Question 1

the 4 basic systems of the gas anesthesia machine

Answer 1

compressed gas supply, anes vaporizer, breathing circuit, scavenging system

Question 2

color of O2 tanks

Answer 2

green

Question 3

difference between E and H O2 tanks

Answer 3

E smaller, attach to yoke of machine

H larger, attack to wall or cart, hooked up via gas line

Question 4

pressure of a full E or H tank when full

Answer 4

2200 psi

Question 5

formula to calculate Liters in an E tank

Answer 5

psi x 0.3

Question 6

formula to calculate liters in an H tank

Answer 6

psi x 3

Question 7

color of N2O tank

Answer 7

blue

Question 8

what the outlet valve and outlet port on a tank do

Answer 8

outlet valve- controls flow of gas out of cylinder

outlet port- port thro which gas flows out of tank

Question 9

the gauge on an N2O tank measures

Answer 9

gas content (not liquid), measure amount left in tank by weight not gauge

Question 10

what the pressure-reducing valve does

Answer 10

reduces pressure of gas coming out of tank to ab 40-50 psi

Question 11

what the line pressue gauge measures

Answer 11

psi in gas line after passing pressure-reducer (should read 40-50 psi)

Question 12

the tank pressure gauge measures

Answer 12

the pressure of gas exiting the tank (before reaching reducer)

Question 13

this gauge gives an idea of amount of O2 in tank when tank is open

Answer 13

tank pressure gauge

Question 14

a tank pressure gauge should read ___ when full and ___ when empty

Answer 14

full= 2200 psi
empty= 0 psi

Question 15

normal flow rate

Answer 15

1L/ min

Question 16

a full tank lasts ab how long

Answer 16

11 hr

Question 17

what the flow meter does

Answer 17

further reduces the psi to ab 15psi, valve controls flow rate in L/min, ball indicator

Question 18

formula to calculate tidal volume

Answer 18

10ml/ kg

Question 19

formula for determining O2 flow rate for a partial rebreathing system

Answer 19

25-50ml/ kg/ min

Question 20

formula for determining O2 flow rate for a total rebreathing system

Answer 20

15ml/ kg/ min

Question 21

what the flush valve does

Answer 21

delivers large volume of O2 to breathing circuit bypassing vaporizer and flow meter

Question 22

why we would use the flush valve

Answer 22

deliver high volume of O2, fill reservoir bag, dilute out anes gas at end of procedure

Question 23

how to deliver pure O2

Answer 23

turn off vaporizer, squeeze gas out of reservoir bag

Question 24

if the flow meter is off..

Answer 24

we get no anes gas

Question 25

red vaporizer is for

Answer 25

halothane

Question 26

purple vaporizer is for

Answer 26

isoflurane

Question 27

yellow vaporizer is for

Answer 27

sevoflurane

Question 28

blue vaporizer is for

Answer 28

desflurane

Question 29

anes liquid is a volitile liquid meaning that it

Answer 29

will evaporate fast into the air

Question 30

where the O2 enters the vaporizer from flow meter

Answer 30

vaporizer inlet port

Question 31

point where fresh gas (O2 +anes) leaves vaporizer thro hose (goes to breathing circuit)

Answer 31

vaporizer outlet port

Question 32

the breathing circuit refers to

Answer 32

how gas is delivered to patient

Question 33

the rebreathing circuit is also called

Answer 33

the circle system

Question 34

a rebreathing circuit can be used for animals of what size

Answer 34

> 15 lbs

Question 35

where is the flush valve located

Answer 35

on flow meter

Question 36

where is the pressure relief/ pop-off valve located

Answer 36

on top of expiratory unidirectional valve

Question 37

what part of machine determines whether system is open or closed

Answer 37

pop-off valve (pressure relief valve)

Question 38

gauge that tells us pressure in system/ patients lungs

Answer 38

pressure manometer (on top of CO2 absorber)

Question 39

where is negative pressure relief valve located

Answer 39

on inspiratory side of machine