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X Clinical Veterinary Nursing Theory > Anaesthetic Calculations > Flashcards

Flashcards in Anaesthetic Calculations Deck (23)
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1
Q

what are the main non-rebreathing systems?

A

bain
magill
paralell lack
t-piece

2
Q

why do we need a breathing system?

A

deliver oxygen
deliver VA
remove waste - VA and CO2

3
Q

what breathing system has it’s reservoir bag on the inspiratory limb, has a circuit factor of 1 and APL valve at the machine end?

A

lack

4
Q

what breathing system has it’s reservoir bag on the expiratory limb, has a circuit factor of 2-3, APL valve at the machine end and is coaxial?

A

bain

5
Q

what breathing system has unidirectional valves, has a soda lime canister and is very economical to run?

A

circle

6
Q

what breathing system has it’s reservoir bag on the expiratory limb, has a circuit factor of 2-3 and is not coaxial?

A

t-piece

7
Q

what breathing system has it’s reservoir bag on the inspiratory limb, has a circuit factor of 1 and APL valve at the patients mouth?

A

magill

8
Q

what non-rebreathing systems are suitable for IPPV?

A

those with the bag on the expiratory limb -
t piece and bain
circle

9
Q

what breathing systems are not suitable for IPPV?

A

those with the bag on the inspiratory limb
lack and magill
(can provide IPPV in the short term and on high flow)

10
Q

what is the circuit factor of the t-piece and bain?

A

2-3

11
Q

what patient size is a t-piece suitable for?

A

<10kg

12
Q

what patient size is a lack suitable for?

A

> 10kg to <25-30kg

13
Q

what patient size is a bain suitable for?

A

> 8 to <15-25kg

14
Q

what patient size is a magill suitable for?

A

> 5kg

15
Q

what patient size is a circle suitable for?

A

> 10kg

16
Q

what is the circle factor of a lack and magill?

A

1

17
Q

how is fresh gas flow calculated?

A

minute volume x circuit factor

18
Q

how is minute volume calculated?

A

body weight x tidal volume x resp rate

19
Q

what is the value of tidal volume?

A

10 ml/kg

20
Q

how can bag size be calculated?

A

calculate patient tidal volume (bw x 10ml/kg)

times TV by 3 and 6 to calculate a range - bag should comfortably accommodate this and not be to large

21
Q

what is the equation used to calculate drug dosages?

A
patients weight (kg) x drug dose (mg/kg)
/strength of drug mg/ml
22
Q

how do you convert micrograms to milligrams?

A

divide by 1000

23
Q

how can a % be converted to mg?

A

x10

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