Anesthesia Equipment -Italian + Lab (LS) Flashcards

1
Q

What is this?

A

Pressure regulator

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2
Q

What is this?

A

flow meter

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3
Q

What is this?

A

Vaporizer

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4
Q

What is this for?

A

O2 Flush valve

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5
Q

What is this?

A

Hanger yoke

(where the tanks hook up)

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6
Q

What is this?

A

Pressure regulator

(comes in from 02 tank & goes to flow meter)

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7
Q

What happens at the Flow Meter?

A

Brings the pressure down to 14.7 PSI (from 50 PSI)

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8
Q

What happens at the Pressure regulator?

A

Brings the pressure from 2000 PSI → 50 PSI

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9
Q

What is your PSI at the O2 Flush Valve?

What implications does this have?

A
  • 50 PSI
  • Do NOT use if hooked up to patient → barotrauma!!!
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10
Q

Why do we need a vaporizer?

A

allows drug to go from liquid to gas form

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11
Q

Where to you refill the vaporizer?

A

At the filler port

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12
Q

What is the dial used for?

A

To control the plane of anesthesia

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13
Q

Where can you check the agent level of the vaporizer?

A

the sight glass

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14
Q

What is this?

A

Common gas outlet

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15
Q

What happens at the Common Gas Outlet?

Pressure at this point?

A
  • exit point for mixture of carrier gas + inhalant anesthetic + flow
  • 14 PSI
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16
Q

What is the purpose of the Pin Index System?

A

To ensure the proper medical gas cyclinder is used

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17
Q

Know Your TANK COLORS!!

A
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18
Q

What is the color code for CO2?

A

GREY

(both)

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19
Q

What is the color code for He/O2?

A

USA→ Brown/Green

ISO→ Brown/White

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20
Q

What is the color code for Medical Air?

A

USA → Yellow

ISO→ Black & White

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21
Q

What is the color code for Nitrogen (N2)?

A

BLACK

(both)

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22
Q

What is the color code for Nitrous Oxide (N2O)?

A

BLUE

(both)

23
Q

What is the color code for Oxygen (O2)?

A

USA → Green

ISO → White

24
Q

What is the color code for Suction (Vaccum)?

A

USA → White

ISO → Yellow

25
Q

What is the color code for Waste Gas/Evacuation?

A

PURPLE

(both)

26
Q

Filling pressure of O<strong>2</strong>?

A

PSI → 2,000

kPa → 13,700

27
Q

Filling Pressure of N2O?

A

PSI → 745

kPa → 4,400

28
Q

Filling Pressure of CO2?

A

PSI → 800

kPa → 5,000

29
Q

What is the standard temp @ which filling pressure is measured?

(C/F)

A

20 °C

70 °F

30
Q

3 Key Points about O2 Concentrators.

A
  • All electrical
  • Can convert regular air → 95% pure O2
  • Does this by filtering out N2 from “air”
31
Q

What is the most accurate way to determine

the amount of N2O/CO2 in the tank?

A

Weigh the cyclinder

(before & after)

32
Q

How can you accurately determine the amount of O2 left in the tank?

A

Look at the pressure gauge

(while the tank is open.. )

33
Q

When does the Ritchie’s Whistle go off?

Why is this important?

A
  • When O2 tank pressure drops below:
    • 29 PSI
    • 200 kPa
  • When O2 pressure drops at the Flow Meter below:
    • 14 PSI
    • 100 kPa

Low pressure warning system→ You’re about to run out of O2

34
Q

Breathing System main components?

(6)

A
  1. Tubes → I/E
  2. Reservoir Bag
  3. Valves
    • Pop Off/ APL
    • Unidirectional
  4. CO2 absorber → rebreathing ONLY
  5. Manometers → measure pressure
  6. Connectors
35
Q

What determines the Flow Rate of a Tube?

What is most important for tube flow rate?

A
  • Diameter & length
  • Radius of tube → r4
36
Q

How do you choose the appropriate Reservoir bag for your patient?

A

Need at bag that is 4-6 x’s the TV of your patient

37
Q

How do you determine patient’s Tidal Volume (TV)?

A

TV = 10-20 mL/Kg

38
Q

Where does the gas exit to the Scavenger System at?

A

APL valve

(Adjustable Pressure Limiting)

39
Q

What systems have Unidirectional valves?

A

Rebreathing systems ONLY!!

40
Q

How is CO2 removed from the breathing system before the next inspiration?

A
  • Rebreathing → chemical absorbent (soda lime)
  • Non-rebreathing → flushed out by high FGF
41
Q

How can you tell when your Soda Lime is exhausted & needs to be changed?

(4)

A
  • Dry, friable granules
  • Rapid color change
  • No heat production
  • Hypercapina
42
Q

Correct way to use a Rebreathing System?

A
  1. start w/ HIGH FGF (40-100 mL/kg/min)
    • gets rid of N2 & reach appropriate depth quickly
  2. Reduce FGF to 20 mL/kg/min → leave vaporizer alone
  3. to change depth return to high FGF
43
Q

What are the different FGF rates in a rebreathing system?

A
  • High → > 40-60 mL/Kg/min
  • Medium → 20-40 mL/Kg/min
  • Low< 20 mL/Kg/min
  • Reservior bag should be full, APL valve opened
44
Q

Correct way to use a Non-rebreathing system?

A
  • High FGF for entire anesthesia period
  • Rate needs to be 2-4 x’s patient (Minute Volume=200-400 mL/Kg/min)
45
Q

What Non-rebreathing systems are used in VSL?

A

Mapleson D or Bain

46
Q

What animals need to have Non-Rebreathing Systems for Anesthesia?

A

Any animal < 5 Kg

47
Q

5 Key Points about Facial Masks?

A
  • Admin O2 pre- & post-op
  • Stressful
  • Don’t protect airways
  • IPPV is challenging
  • Larger mechanical dead space than ETT
48
Q

What is “dead space”?

Which type of “dead space” can we change?

A
  • the volume of inspiratory gas that DOES NOT take part in alveolar gas exchange
  • Mechanical dead space only
49
Q

Do laryngeal masks protect against aspiration?

A

NO!!

50
Q

Which ETT protects against aspiration?

Which ETT can be gas sterilzed?

A
  • Cuffed ETT
  • Silicon ETT
51
Q

Why would you use a non-cuffed ETT?

(2)

A
  • Birds & Reptiles → complete endotracheal rings
  • Very small animals → protect trachea w/ smaller tube
52
Q

KNOW that parts of a Murphy’s ETT!

A
53
Q

How do you select the appropriate ETT size?

A
  • Length → point of shoulder to snout
  • Diameter → largest possible that will not damage the trachea
54
Q

What is the most reliable way to ensure proper placement of the ETT?

A

Capnograph