Anesthesia Machine Set up

Question 1

Y/Circle Breathing System

Answer 1

Used in animals over 10kg. It is considered a Rebreathing system. Mainly want to use this in Sheep!

Question 2

Universal F

Answer 2

Used in animals over 10kg. It is considered a Rebreathing system. Mainly want to use this in Donkeys!

Question 3

Mapleson D

Answer 3

Used in animals under 10kg. Connects to the bane block. It is considered a Non-rebreathing system. Mainly used in small dogs and cats!

Question 4

Mapleson F

Answer 4

Used in animals generally under 3kg. Is independent in which the reservoir bag connects to the tubing itself not to the machine. It is considered a Non-rebreathing system. Mainly used in tiny patients, ferrets, small cats, etc.

Question 5

What breathing system would you use for a. 20kg dog, b. 120kg donkey, c. 35kg sheep, d. 2kg ferret

Answer 5

a. Circle/Y or Universal F
b. universal F
c. Circle/Y
d. Mapleson F

Question 6

Calculate the bag size for….

25kg dog

Answer 6

50 x 25 / 1000
1.25L
Round up…. 2L bag

Question 7

Calculate the O2 flow rate for….

a 120 kg donkey

Answer 7

System used: Universal F
Induction: 30 x 120 /1000 = 3.6L/min
Maintenance: 10 x 120 /1000 = 1.2L/min

Question 8

Calculate the O2 flow rate for…

a 2kg ferret

Answer 8

System used: Mapleson F
Induction and Maintenance the same for patients on non-rebreathing systems: 200x2/1000 = 0.4
The lowest flow in these cases is 1L/min so just round up

Question 9

How do you Leak test the machine from square one to finish?

Answer 9

1. connect the green O2 cord to the wall and white scavenge to the wall.
2. connect the same cords, green and white to the machine
3. connect your system to machine including tubes and reservoir bag (and scavenge if mapleson f)
4. connect gas line to machine from system
5. close popoff valve
6. place finger over the end of the tube
7. fill until pressure reaches 30
8. allow to sit for 30 seconds
9. if no leak, open popoff, squeeze bag and then release finger from end of tube away from face

Question 10

Oxygen flow rates for a small animal on a rebreathing system

Answer 10

Induction: 80ml/kg/min
Maintenance: 30ml/kg/min
Recovery: 80ml/kg/min

Question 11

Oxygen flow rates for a large animal on a rebreathing system

Answer 11

Induction: 30ml/kg/min
Maintenance: 10ml/kg/min
Recovery: 30ml/kg/min

Question 12

Oxygen flow rates for an animal on a non-rebreathing system

Answer 12

Induction and Maintenance and Recovery all the same: 200ml/kg/min
*Minimum flow is 1L/min