Monitoring Flashcards

1
Q

DISS

A

diameter index safety system

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2
Q

PISS

A

Pin Index Safety System

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3
Q

Diameter Index Safety System

A

connects to pipeline

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4
Q

Pin Index Safety System

A

connects to cylinders

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5
Q

pressure in gas pipeline

A

50 psi

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6
Q

Pressure in E-cylinder

A

1900-2200 psi

(745 if N2O)

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7
Q

If the oxygen cylinder valve is opened and there also pipeline pressure, will the oxygen from the O2 cylinder be used or oxygen from the pipeline?

A

cylinder (45 psig) < pipeline (50 psig)

gas will be taken from pipeline if both are open

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8
Q

Ohmeda ventilator

A

pneumatic

100% oxygen used for drive gas

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9
Q

North American Drager ventilator

A

pneumatic

33% Oxygen entrained with room air via venturi system

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10
Q

Datex fail-safe

A

pressure shut-off valve (PSSV)

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11
Q

fail-safe

A

prevents delivery of hypoxic mixture

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12
Q

PSSV

A

Pressure Sensor Shut-off Valve

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13
Q

Pressure Sensor Shutt-off Valve

A

when O2 supply is less than 20 psig, the valve closes and shuts off other gases

  • upstream from 2nd stage regulator
  • Datex
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14
Q

Draeger fail safe

A

O2 Failure Protection Device and O2 Ratio Monitor Controller (ORMC)

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15
Q

OFPD

A

Oxygen Failure Protection Device

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16
Q

O2 Failure Protection Device (OFPD)

A

gradually reduces other gases until O2 supply is below 12+/- 4 psig

  • based on proportioning
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17
Q

****

A
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18
Q

ORMC

A

O2 Ratio Monitor Controller

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19
Q

O2 Ratio Monitor Controller (ORMC)

A

O2 resistor is 3-4x that of N2O resistor, if diaphragm falls, a hypoxic mixture can be given

  • Drager
  • similar to link 25
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20
Q

If there is a loss of oxygen pipeline pressure, which flow meter bobbin will go down first, oxygen or nitrous?

A

Nitrous

assuming fail-safe is working properly

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21
Q

What kind of leaks do you test for with a positive pressure leak test?

A

leaks between CGO and patient’s circuit

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22
Q

What is the most common cause of leaks inside the machine (prior to the common gas outlet)?

A

partially open filler ports for the vaporizers

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23
Q

What is the dead space in the circle system and what valves minimize this dead space?

A

Dead space is bidirectional flow. The inspiratory and expiratory valves help prevent two way flow/dead space

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24
Q

What happens if you have tear in the bellows?

A
  • bellows wont rise
  • anesthetic agents may be diluted by drive gas
  • FGF will be more diluted with O2
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25
Q

Why is the manual breathing bag located on the expiratory limb and not on the inspiratory limb of the circle system?

A

To prevent rebreathing of expired gas. Exhaled gas goes to manual rebreathing bag and through the CO2 absorber before returning to the inspiratory limb in the circle breathing system. Expiratory one way valve prevents expired gas in expiratory limb from going back to patient.

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26
Q

how do you change a semi-closed system to a closed system?

A

remove scavenging

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27
Q

Why do you need a negative pressure relief valve?

A

The negative pressure relief valve prevents negative pressure in the scavenging system from being applied to the patient.

  • Negative pressure can occur when there is maximum suction and the APL valve is open or negative pressure relief valve fails.
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28
Q

when does the negative pressure relief valve open?

A

-5 cmH2O

29
Q

When does the positive pressure relief valve open?

A

10 cmH2O

30
Q

Other name for Mapleson A

A

Magill or Lack

31
Q

Mapleson A

[uses]

A

spontaneous ventilation during general anesthesia

32
Q

Mapleson A

[FGF for spontaneous]

A

70 - 100 mL/kg/min

33
Q

Mapleson A

[FGF for positive pressure]

A

3x minute ventilation

34
Q

Mapleson B

[uses]

A

spontaneous or controlled ventilation

35
Q

Mapleson B

[FGF for spontaneous]

A

20-25 L/min

or

2x minute ventilation

36
Q

Mapleson B

[FGF for positive pressure]

A

2 - 2.5x minute ventilation

37
Q

Mapleson C

[uses]

A

resuscitation

38
Q

Mapleson C

[FGF for spontaneous]

A

2x minute ventilation

39
Q

Mapleson C

[FGF for positive pressure]

A

2 - 2.5x minute ventilation

40
Q

Mapleson D

[other names]

A

Bain

41
Q

Mapleson D

[FGF for spontaneous]

A

100 - 300 ml/kg/min

42
Q

Mapleson D

[FGF for positive pressure]

A

70 - 100 ml/kg/min

(100-240 achieves equal ETCO2)

43
Q

Mapleson E

[other names]

A

Ayers T-piece

44
Q

Mapleson D

[uses]

A

spontaneous IPPV or general anesthesia

  • ease of scavenging gases
45
Q

Mapleson E

[uses]

A

spontaneous only

46
Q

Mapleson E

[FGF for spontaneous]

A

3.5x minute ventilation

47
Q

Mapleson F

[other names]

A

Jackson Reese

48
Q

Mapleson F

[uses]

A

pediatrics less than 25 kg

49
Q

Mapleson F

[FGF for spontaneous and positive pressure]

A

2.5 - 3x minute ventilation

(minimum 4 L/min)

50
Q
A

Mapleson A

51
Q
A

Mapleson B

52
Q
A

Mapleson C

53
Q
A

Mapleson D

54
Q
A

Mapleson E

55
Q
A

Mapleson F

56
Q

ventilator

[Draeger Fabius]

A

piston

57
Q

Advantages of Piston ventilator

A

no drive gas and shorter time constant

58
Q

scavenging system

[Draeger Fabius]

A

open active

59
Q

modes of mechanical ventilationo

[Draeger Fabius]

A

PCV, VCV, and pSV

60
Q

O2 Flush

[Draeger Fabius]

A

no fresh gas coupling

no risk of barotrauma

61
Q

What happens when you unplug the wall oxygen source?

[Draeger Fabius]

A
  • low oxygen supply alarm
  • mechanical ventilation still works but does not pass through vaporizers
62
Q

ventilator

[Ohmeda Aysis]

A

pneumatic

63
Q

advantages of pneumatic ventilator

A

patient cannot recieve a hypoxic mixture if there is a leak in the bellows

(pure oxygen)

64
Q

disadvantages of pneumatic ventilator

A

dependent on pipeline or cylinder oxygen drive

65
Q

scavenging system

[Ohmeda Aysis]

A

closed active

66
Q

O2 flush

[Ohmeda Aysis]

A

small risk of volutrauma, but pressure will not go above set inspiratory pressure limit

67
Q

what still works when the [Ohmeda Aysis] is unplugged

A

monitors do not work

68
Q
A