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RUSVM Anesthesiology 2016 > Anesthesia Machine > Flashcards

Anesthesia Machine Flashcards

1
Q

What is the minimum acceptable Oxygen percentage for people and small animals?

A

30-35% O2

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2
Q

What is the metabolic requirement for oxygen?

A

5-10 mL/kg/min

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3
Q

What is the minimum O2 flow required?

A

5-10mL/kg/min

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4
Q

What are the medical gases?

A

Oxygen
Nitrous oxide
Medical Air

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5
Q

What are the different types of cylinders?

A

E

H

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6
Q

What is an E cylinder?

A

a single cynlinder attached directly to anesthesia machine via yoke

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7
Q

What is an H cylinder?

A

supply for central O2

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8
Q

What are the oxygen sources?

A

Cylinders
Liquid (Cryogenic oxygen)
Oxygen concentrator

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9
Q

What is the color of an oxygen tank?

A

Green

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10
Q

What is the color of a Nitrous oxide tank?

A

Blue

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11
Q

What is the color of a Medical air tank?

A

Yellow

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12
Q

What is the measurement for the Cylinder pressure?

A

PSI

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13
Q

What is the measurement for the Breathing System pressure?

A

cmH2O

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14
Q

What is the capacity of the E cylinder?

A

660L

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15
Q

How do you calculate the remaining O2?

A

2200psi/660L = psi left on E tank/ X Liters

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16
Q

What is the purpose of a Regulator?

A

Decreases tank pressure to a safe working pressure

17
Q

Flowmeter

A

Controls rate of gas flow through the vaporizer

18
Q

Where do you read the flow on a flowmeter?

A

Middle of the Ball

Top of the Bobbin

19
Q

Vapor

A

Gaseous state of substance that is liquid at ambient temp and pressure

20
Q

Gas

A

exists in gaseous state at ambient T and P

21
Q

Vapor Pressure

A

Pressure exerted by vapor molecules when liquid and vapor phases are in equilibrium

22
Q

Saturated Vapor pressure

A

Vapors have a maximum administration percentage

23
Q

Characteristics of Modern Vaporizers:

A 
Agent Specific
Concentration-Calibrated 
Variable bypass
Flow-over 
Out-of-Circuit 
High Resistance 
Compensated for temperature, flow, and back-pressure
24
Q

Variable-bypass system

A

fresh gas flows over a reservoir of liquid anesthetic and mixes with carrier gas

25
Q

Characteristics of a nonprecision VIC vaporizer:

A 
In circuit 
Increased surface area for vaporization 
Cannot produce a known anesthetic %
Not temperature compensated 
Not currently recommended
26
Q

Characteristics of Modern vaporizers:

A

Temperature is compensated for

Flow rate: 0.5-10L/min

RUSVM Anesthesiology 2016 (38 decks)

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