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RET 2934 > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

How many liters are in 1 cu ft?

A

2.83

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2
Q

Which system does larger cylinders use?

A

American standard safety system

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3
Q

Small cylinders use which safety system?

A

Pin index safety system (PISS)

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4
Q

What color tank is O2?

A

Green

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5
Q

What color tank is Helium?

A

Brown

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6
Q

What color tank is CO2?

A

Gray

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7
Q

What color tank is nitrous oxide?

A

Light blue

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8
Q

What color tank is cyclopropane?

A

Orange

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9
Q

What color tank is ethylene?

A

Red

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10
Q

What color tank is air?

A

Yellow

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11
Q

What color tank is CO2/O2?

A

Gray & Green

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12
Q

What color tank is He/O2?

A

Brown & green

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13
Q

How often is a cylinder tested?

A

Every 5-10 years?

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14
Q

What is a cylinder tested for?

A
  1. Cylinder expansion
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15
Q

Liquid O2 should not exceed a pressure of what?

A

250 psig

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16
Q

It should not exceed a temp of what?

A

-297 deg F

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17
Q

What must you always do before attaching a
regulator?

A

Crack the cylinder

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18
Q

A hole in the diaphragm of cylinder will result in
what?

A

A continuous leak

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19
Q

What is the formula for duration of flow?

A

Cylinder factor x pressure/ flow rate

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20
Q

What is the formula for duration of flow (liquid

A

Liquid wt (lbs) x 344

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21
Q

O2)?

A

Take your answer and divide by flow rate then

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22
Q

What safety system is used for flowmeter
outlets?

A

Diameter index safety system (DISS)

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23
Q

If the flow meter is turned off completely and
there is still bubbling what does that indicate?

A

Valve seat is faulty and flowmeter must be
replaced

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24
Q

What is the advantage of the Bourdon gauge?

A

It’s not patient dependent

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25
Q

Why is this beneficial?

A

Makes transporting patient easier

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26
Q

What are the indications for O2 therapy?

A
  1. Labored breathing or dyspnea
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27
Q

What are some signs and symptoms of
hypoxemia?

A
  1. Cyanosis (unless anemia is present)
  2. Impairment of special senses
  3. Headache
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28
Q

What are some complications of O2 therapy?

A
  1. O2 toxicity
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29
Q

What is reduced mucociliary activity?

A

beating of cilia in the mucociliary blanket is not
as active when hight FiO2 are used.

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30
Q

What is the four types of hypoxia?

A
  1. Anemic hypoxia
  2. Stagnant (circulatory) hypoxia
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31
Q

What is hypoxemic hypoxia?

A

Alveolar Hypoventilation
Diffusion defects

32
Q

What is anemic hypoxia?

A

Decreased HB level
CO poisoning

33
Q

What is stagnant (circulatory) hypoxia?

A

Decreased HR

34
Q

What is Histotoxic hypoxia?

A

cyanide poisoning
alcohol poisoning

35
Q

What is a low-flow delivery device?

A

An O2 device that does not meet the patients
inspiratory flow demands.

36
Q

How much FiO2 does a transtracheal catheter
give?

37
Q

How much flow?

A

¼ - 4L/min

38
Q

How much FiO2 does a nasal cannula give?

39
Q

How much flow?

A

¼ - 6L/min

40
Q

How much FiO2 does a nasal reservoir cannula
deliver?

41
Q

How much flow?

A

¼ - 4/L/min

42
Q

How much FiO2 does a simple mask deliver?

43
Q

How much flow?

44
Q

How much FiO2 does a nonrebreathing mask?

45
Q

How much flow?

A

10 - 15L/min

46
Q

If the patient comes in tachypneic what device
should you choose?

47
Q

Low flow devices are adequate oxygen delivery
systems only when the patient meets the
following criteria:

A
  1. Regular and consistent ventilatory pattern
  2. RR < 25 breaths per min
  3. Consistent VT of 300-700mL (not
    fluctuating)
48
Q

What is the formula for Air/O2 entrainment
ratios?

A

100-x/x-20= parts of air entrained/ 1 part of O2
Use 21 with percentages less than 40

49
Q

What is the formula for total flow?

A

Ex. 40% (3:1 air/O2 ratio)

50
Q

What is the formula for inspiratory flow?

A

Vt(L)/Ti(s)

51
Q

How much FiO2 and flow does and aerosol
mask deliver.

A

21-100% FiO2
8-15L/min

52
Q

For an aerosol mask ____ should be available at
all times to ensure adequate flow rates.

53
Q

What is the FiO2 and flow rate for a face tent?

A

21-40%
8-15 L/min

54
Q

What is the FiO2 and flow rate for a T-piece
adapter?

A

21-100%
8-5 L/min

55
Q

What is the FiO2 and flow rate for a Trach
mask?

A

35-60%
10-15 L/min

56
Q

What is the FiO2 and flow rate for an oxymask?

A

24-90%
1-15 (flush)

57
Q

What is a high flow nasal cannula?

A

This provides high flow therapy via a thermally
controlled humidification system.

58
Q

HFNC provide how much body heat to patients?

59
Q

and. Up to _____ are used in adults proving O2

60
Q

water in the tubing, causes_____ decreasing the
amount of air entrainment and therefore
increasing the percentage of O2.

A

Back pressure into the nebulizer

61
Q

What is the formula for FiO2?

A

O2 flow + (air flow x 0.2)/total flow

62
Q

For an O2 blender an audible alarm system that
sounds if there is ____?

A

A drop in inlet pressure

63
Q

When using a blender/nebulizer to provide O2,
make sure the nebulizer is set on _____

64
Q

For an 80:20 mixture of helium and O2, multiply
the flowmeter reading by ____ to determine

65
Q

correct flow rate?

A

Ex. 10×1.8=18 L/min

66
Q

For an 80:20 mixture of helium and O2, to deliver
specific flow divide the flow rate by ____?

A

1.8
Ex. 12/1.8=6.6 L/min

67
Q

For a 70:30 mixture of heliox, multiply the
flowmeter reading by ____?

68
Q

For a 70:30 mixture of heliox, divide by ____for
specific flow?

69
Q

What are some causes of inaccurate readings?

A
  1. Hypothermia
70
Q

List the air/O2 ratios for 60% O2, 40% O2, 35%
O2, 30% O2, and 24% O2.

A

35 = 5:1
30 = 8:1
40 = 3:1

71
Q

Give four examples of high-flow O2 delivery

A
  1. Aerosol mask
72
Q

devices.

73
Q

What is the primary benefit of using a reservoir
cannula?

A

The device delivers more O2 for the patient so
flow can be decreased.

74
Q

List the three ventilatory criteria that should be
met by patients receiving O2 from a low-flow

A

An O2 device that does not meet the patients
needs. Room air makes up the rest of the Vt.

75
Q

device.

A

Normal flow 25-30

76
Q

Give examples of three low-flow O2 delivery
devices.

A
  1. Nasal cannula
  2. Simple mask
  3. Partial rebreather
77
Q

List five indications for the use of hyperbaric O2
therapy.

A
  1. CO poisoning
  2. Cyanide poisoning

RET 2934 (13 decks)

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