Anesthetic machine

Question 1

What color are the gas cylinders

Answer 1

Green - Oxygen
Blue - Nitrous Oxide
Yellow - Compressed air

Question 2

What is the purpose of the Anesthetic machine (four things)

Answer 2

Delivery of controlled oxygen
Delivery of safe anesthetic concentrations, Removal of exhaled CO2
Assisting in ventilation

Question 3

The oxygen tank start at what PSI

Answer 3

2200 psi

Question 4

What are the four basic components of the Anesthesia (Ax) machine

Answer 4

compressed gas source, regulator, flow meter, vaporizer

Question 5

What rule of thumb helps you set up an Ax machine?

Answer 5

Always follow the Oxygen

Question 6

Gas cylinders are made of what material?

Answer 6

Steel, alloy, or aluminum

Question 7

What does the Oxygen do?

Answer 7

Delivers O2 to the patient for metabolic requirements

Acts as carrier for the anesthesia agent

Question 8

When should the O2 tank be changed?

Answer 8

When pressure gauge reads 100-200 psi

Question 9

Large oxygen tanks are labeled with what letters?

Answer 9

H & K and are usually connected to central systems

Question 10

Small tanks are labeled with what letter?

Answer 10

E and affix to the machine

Question 11

What does the pressure gauge indicate?

Answer 11

Amount of pressure in the tank

Question 12

What does the regulator do?

Answer 12

Decreases the pressure coming from the tank (2200psi) into the line (40-50psi)

Question 13

Should tanks be changed during a procedure?

Answer 13

No, check and change before if gauge reads 100-200 psi.

Question 14

What color are Nitrous Oxide tanks

Answer 14

Blue

Question 15

What psi do Nitrous Oxide tanks start at?

Answer 15

750 psi. The pressure gauge reads only the gas not the liquid.

Question 16

Nitrous Oxide tanks contain what?

Answer 16

Both a gas and liquid

Question 17

At what psi should a Nitrous Oxide tank be changed?

Answer 17

500 psi

Question 18

What does the flow meter do?

Answer 18

Further reduces the gas pressure of the gas to 15 psi. This is close to atmospheric pressure.
The flowmeter regulates how much O2 is entering the system and being delivered to the patient.

Question 19

What measurement are flow rates expressed in?

Answer 19

L/min

Question 20

What is a chamber O2 flow rate?

Answer 20

5 L/min

Question 21

What is a mask O2 flow rate?

Answer 21

2 L/min

Question 22

How do you calculate an introduction flow rate for a patient >7kg

Answer 22

30 ml/kg/min

Question 23

How do you calculate an introduction flow rate for a patient <7kg?

Answer 23

<7kg- 200ml/kg/min *Never less than 1L per minute

Question 24

What function does the fast flush valve have?

Answer 24

This allows quick infusion of only O2 into the breathing circuit.

Question 25

What is the function of the vaporizer?

Answer 25

to house liquid anesthetic and to vaporize that liquid into a gas that can be delivered in a controlled manner.

Question 26

What are the two types of vaporizers?

Answer 26

Precision and Non-precision

Question 27

Precision vaporizers are always outside of the circle. True or False

Answer 27

True

Question 28

Will the O2 flow rate affect the amount of vaporized anesthetic delivered to the patient?

Answer 28

Yes - Extremely high or low rates are difficult to compensate for.