01

Question 1

Equipment checks

Answer 1

• Pipeline pressure
• Gas levels
• Patent circuit, leaks/blockages
• Suction

Question 2

1 atmosphere =
X bar
X kPa

Answer 2

1 bar

100 kPa

Question 3

How to change O2 cylinder

Answer 3

Turn off cylinder
Vent through machine
Open yoke
Remove O2
Check bodok seal
Fit new O2
Close yoke 
Open cylinder 
Check pressure and for leaks

Question 4

APL valve function

Answer 4

Adjustable pressure limiting

• one way exhaust valve
• enables adjustable positive pressure ventilation using reservoir bag
• safety blow-off valve

Question 5

Reservoir bag function

Answer 5

- Provides gas during peak inhalation 
(Flow rate may be 40L/min)
- Indicates spontaneous ventilation 
- Allows for positive pressure vent 
- Provides some protection from over pressure