Parts Of The Anesthetic Machine

Question 0

Oxygen is given at a controlled rate measured in _____?

Answer 0

L/min

Question 1

What is the purpose of the anesthetic machine?

Answer 1

A liquid inhalant is vaporized into a carrier gas, and delivered to the patient via a breathing circuit

Question 2

Isoflurane is converted to a gas and given at a specific _________

Answer 2

Percentage

Question 3

Gases exhaled from the patient are _______

Answer 3

Scavenged or Re-circulated once CO2 has been removed

Question 4

What does the scavenging system dispose of?

Answer 4

Excess and waste anesthetic gases

Question 5

What are the parts of the compressed gas supply?

Answer 5

Gas tanks
Pressure gauges
Pressure reducing valves
Flow meter

Question 6

What are the components of the anesthetic machine?

Answer 6

Compressed Gas Supply
Anesthetic Vaporizer
Breathing Circuit
Scavenging System

Question 7

Where is the anesthetic vaporizer located?

Answer 7

Near the fresh gas outlet

Question 8

Parts of the breathing circuit

Answer 8

Unidirectional valves
Breathing tubes
Reservoir bag
Pop-off valve
CO2 canister
Pressure manometer
Negative pressure relief valve

Question 9

What is the most commonly used carrier gas

Answer 9

Oxygen is the most commonly used carrier gas

Question 10

What pressure is the oxygen compressed to

Answer 10

The oxygen tank can be compressed up to 2200 psi

Question 11

“E” tanks hold how many L of oxygen?

Answer 11

“E” tanks hold 660 L of oxygen

Question 12

“H” tanks hold how many L of oxygen?

Answer 12

“H” tanks hold 6900 L of oxygen

Question 13

Are “E” tanks attached to the anesthesia machine?

Answer 13

Yes

Question 14

Are “H” tanks attached to the anesthesia machine?

Answer 14

No

Question 15

What color is an oxygen tank?

Answer 15

Green

White in Canada

Question 16

What color is a nitrous oxide tank?

Answer 16

Blue

Question 17

What color is a carbon dioxide tank?

Answer 17

Gray

Question 18

How are “E” tanks/cylinders attached to the machine?

Answer 18

Attached via a Yoke

Question 19

How are “H” tanks/cylinders attached to the machine?

Answer 19

Attached via hoses or pipes

Question 20

Yokes are gas ______

Answer 20

Specific

Question 21

What is the yoke connected to to control the amount of gas released?

Answer 21

The yoke is connected to a Pressure Regulator to control the amount of gas released

Question 22

How many pins does an oxygen yoke have below the outlet port?

Answer 22

An oxygen yoke has 2 pins below the outlet port

Question 23

What does a Tank Pressure Gauge display?

Answer 23

A Tank Pressure Gauge displays the pressure of oxygen currently in the tank

Question 24

When does a Tank Pressure Gauge display the pressure?

Answer 24

Only displays pressure when the tank is open/on

Question 25

Only open the oxygen tank once it has been connected to this

Answer 25

Only open the tank once it has been connected to a yoke

Question 26

When does the Tank Pressure Gauge read zero?

Answer 26

Reads zero when tank is empty and when tank is turned off/closed

Question 27

What should you turn on and check before every anesthetic procedure?

Answer 27

Turn on O2 and check this gauge before every anesthetic procedure

Question 28

When should you replace an O2 tank with a new one?

Answer 28

Replace with new tank when the pressure is 100 psi

Question 29

The refill line is at this psi

Answer 29

The refill line is at 500 psi (red zone)

Question 30

How do you calculate the total volume of oxygen left in your tank in Liters?

Answer 30

Multiply the psi by 0.3 for E tanks and 3 for H tanks

Question 31

How can you tell how much time you have left until the tank is empty?

Answer 31

Divide the total volume of oxygen (330 L) by the flow rate you are using (1 L/min). 330/1= 330 min 330/60= 5 1/2 hrs

Question 32

What gas does an E cylinder contain?

Answer 32

Nitrous oxide

Question 33

How much psi does a full E cylinder contain?

Answer 33

A full E cylinder contains 760 psi

Question 34

In what form is nitrous oxide present inside the tank?

Answer 34

Nitrous oxide is present in liquid and gas forms inside the tank

Question 35

Why does the Pressure Reducing Valve regulate?

Answer 35

The Pressure Reducing Valve regulates the pressure of the gas leaving the tank to flow through the lines, into the flow meter of the anesthesia machine.

Question 36

What does the Pressure Reducing Valve reduce?

Answer 36

Reduces the pressure of oxygen that leaves the tank at 2200 psi to a safer 40-50 psi

Question 37

To what does the Pressure Reducing Valve reduce the psi of oxygen leaving the tank (at 2200 psi)?

Answer 37

Reduces the pressure to a safer 40-50 psi

Question 38

What can a Pressure Reducing Valve be measured with?

Answer 38

The Pressure Reducing Valve can be measured with a line pressure gauge

Question 39

What does the Flow Meter allow the anesthetist to do?

Answer 39

Allows the anesthetist to adjust the flow rate of oxygen traveling through the machine

Question 40

What does the flow meter reduce the psi to?

Answer 40

Flow meter reduces psi from 50 psi to 15 psi

Question 41

Oxygen (or anesthetic gas) does not reach the patient unless this is turned on

Answer 41

Oxygen (and anesthetic gas) does not reach the patient unless the Flow Meter is turned on

Question 42

How is the flow rate of oxygen measured?

Answer 42

Measured in liters per minute by a ball (flow meter)

Question 43

How do you know how to choose a breathing system for a patient?

Answer 43

Non-Rebreathing : 15 lbs or >7 kg

Question 44

How do you know which rebreathing system, red or blue, to choose for your patient?

Answer 44

Red: "Pediatric" 15-35 lbs Blue: "Adult" over 35 lbs

Question 45

How do you calculate which reservoir bag size your patient needs?

Answer 45

Kg x 60mg divided by 1,000mg= size of bag in ml

Question 46

How do you calculate the oxygen flow rate?

Answer 46

Non-Rebreathing: 250ml/kg/min | Rebreathing: 40ml/kg/min

Question 47

How do you calculate how much time the O2 tank has left?

Answer 47

Psi x 0.3= L of O2 | L of O2 divided by patient O2 rate equals time left