Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Principles of Anesthesia 1 > Anesthesia Machine > Flashcards

Anesthesia Machine Flashcards

1
Q

what AANA - Standards for Nurse Anesthesia Practice is used?

A

standard VIII (8)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

gas supplies connected to the machine

A

High pressure system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

blending of gases and volatile agent based on control settings; regulated down to a level to deliver to patients

A

Low pressure system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

fresh gas mixture passes from machine to patient

A

Breathing system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

collects and disposes of excess gases; contaminated air

A

Scavenging system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the “back-up system”

A

e cylinder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what do check-valves do?

A

ensure no retrograde flow, prevent leakage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what colors are the pipe lines?

A

oxygen=green
air=yellow
nitrous=blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is the pressure gauge for hospital pipeline?

A

50 to 55 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what utilizes the diameter of the connection is different between the 3 on both ends (so that you cant take the nitrous hose to connect into the oxygen inlet, etc.)

A

DISS (diameter indexed safety system)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the pressure gauge for cylinder gas inlet?

A

45 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what can high pressure cause in patient?

A

barotrauma (pneumo)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how full should the cylinder be?

A

at least 1000! (greater than half full, 1900)

if less than that, change out the cylinder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

position of OXYGEN pins?

A

2-5 (think “25” is the ideal age)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

position of NITROUS pins?

A

3-5 (think “35” is starting to get a little old and loopy)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

position of AIR pins?

A

1-5 (think “15” is the age when your brain is full of air)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

how do you allow gauge to read 0?

A

bleed it

if 0 is not the baseline, gauge will only read accurately pressures that are higher than the baseline

(think like zeroing a scale before using it)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

how do the bellows move down?

A

oxygen “powering”; compressing them down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

do you hit the o2 flush valve button when patient is on ventilator?

A

NO
this would cause barotrauma during the inspiratory phase (35 to 75L/min of o2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

low o2 supply pressure alarm alarms within how many seconds?*

A

Reservoir-reed device is used within 5 seconds; if it drops below 30 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

o2 pressure failure safety mechanism (fail-safe) occurs if o2 pressure falls below what?*

A

25 psig

shuts off the nitrous so patient does not become hypoxic

the machine just looks at the pressure, not looking at the type of gas!*

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

which type of gas should be closet to the vaporizers? downstream? on the right?

A

oxygen

To minimize risk of hypoxic mixture being delivered if leak occurs in the flowmeters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what is coated with conductive subtance to minimize static electricity?

A

flow/thorpe tubes

tapered
higher the flow, the more turbulent probably

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

where do you read the number for a tapered float?

A

at the very top

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

where do you read the number for a sphere float?

A

center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

how big is a small thorpe tube?

A

1 liter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Should you turn your flows off before you turn machine off?

A

YES
to prevent damaging the float stop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

4 things associated with the Touch-Index O2 flow control knob

A

1) fluted
2) size difference
3) protrudes further
4) most right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

chain that connects oxygen flow meter to nitrous flow meter?

A

Link-25

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what does the proportioning system help deliver oxygen at?

A

at least 25% + 4% O2

31
Q

what are basal metabolic needs for oxygen? minimal oxygen flow when machine is on for the flow meter?

A

150ml/min

32
Q

where gases from different flowmeters mix together and have opportunity to enter into a vaporizer which is attached here?

A

Manifold

33
Q

what prevents using more than one vaporizer at a time

A

Interlock-exclusion system

34
Q

what are 3 places leaks could occur in low pressure system?

A

flow reader
vaporizer
manifolds

35
Q

Compress bulb, then plug into machine, make sure it stays compressed (so that there is no leak) ?

A

common/fresh gas outlet

36
Q

how long should bulb be compressed?

A

10 seconds

37
Q

what 3 places does electricity flow from the system switch?

A

ventilator
monitors
desflurane vaporizer (to heat it up)

38
Q

what does turning off the electricty do?

A

it releases the pressure to atmosphere and lets the valves rest

39
Q

what does NOT rely on electrical power?

A

spontaneous or manually assisted ventilation
mechanical flowmeters
scavenging
laryngoscope, flashlights
intravenous bolus or infusion
battery operated peripheral nerve stimulators or intravenous infusion pumps
monitoring using the anesthetist’s five senses

**typically fresh gas flow, vaporizers, and manual ventilation function (know specifics in operator’s manual) are maintained

40
Q

what color does co2 absorber turn when old?

A

purple due to the acid

41
Q

if APL valve was all the way closed, what would we generate?

A

70 cmh20 (CHECK this number!)

42
Q

Safety features of the breathing system

A

Antidisconnect fresh gas hose connector
Antidisconnect pressure sampling line connection
Ventilator low airway pressure alarm
Ventilator pressure-limiting adjustment knob
Ventilator pressure relief valve

43
Q

which is preferred, active or passive scavenging system?

A

active

passive is used in medical missions with evacuation hose

44
Q

what allows the waste gases which enter the system in uneven delivery to be handled in a constant, continuous manner?

A

reservoir (gray bag)

45
Q

what is from APL valve and ventilator pressure relief valve

A

collecting hoses

46
Q

adjust the amount of vacuum from the hospital disposal influencing the scavenging system

A

vacuum control (active system)

47
Q

if vacuum in scavenging system is not high enough, pressure will NOT back up into breathing system
(should be <10*)

A

Positive pressure relief mechanism

48
Q

if vacuum is too strong, the gases to be delivered to the patient will NOT be affected
(should be >0*)

A

Negative pressure relief mechanism

49
Q

Scavenging system: gas enters the scavenging system when the peak pressure exceeds the opening pressure of the APL valve

A

Manual ventilation

50
Q

Scavenging system: during late exhalation and the expiratory pause after the ventilator bellows have returned to full position

A

Mechanical ventilation

51
Q

Scavenging system: during late exhalation and the expiratory pause after the reservoir bag is full

A

Spontaneous ventilation

52
Q

5 functions/paths of Oxygen?**

A

1) Go to oxygen flowmeter
2) Go to O2 flush
3) Activate oxygen pressure failure safety mechanism (fail-safe)
4) Activate oxygen low-pressure alarm
5) Powers the mechanical ventilator bellows

53
Q

does the o2 flush skip the vaporizers?

A

YES, goes straight to the common gas outlet

54
Q

does the o2 driving bellows skip the vaporizers?

A

YES, goes straight to the breathing circuit

55
Q

is an oxygen analyzer essential?

A

YES

Irreversible hypoxic brain injury after 4 minutes of arterial desaturation!

56
Q

3 Primary purposes of the machine?

A

1) provide oxygen
2) blend anesthetic gas mixture
3) To allow ventilation of patient’s lungs, whether spontaneous, assisted, or controlled

57
Q

what is patient ready mode?

A

APL open
bag/vent switch in bag mode
all flows off
mask in place
vaporizers off

58
Q

decreases O2 pressure to 16-20 psig ( N2O reduced to 32 psig)***

A

Second-stage regulator

59
Q

connected to the mechanical ventilator and O2 flush valve

A

o2 power outlet

60
Q

what is an example of the proportioning system

A

link-25

61
Q

what is the ratio for the proportioning system

A

Ratio of N2O to O2 is not more than 3:1

62
Q

what is the purpose of the proportioning system**

A

to not allow a hypoxic mixture (o2 of less than 21%***)

63
Q

add vaporized anesthetic agent to gas flow

A

Calibrated Vaporizers

64
Q

interfaces between the machine and the disposal system

A

manifold of the scavenging system

65
Q

what does the second stage regulator decrease N20 down to

A

32 psig

66
Q

what does the second stage regulator decrease O2 down to

A

16-20 psig

67
Q

KNOW FOR EXAM

if vacuum of SCAVENGING system is not high enough, pressure will not back up into breathing system (should be <10*)

A
  • APL OPEN
  • Bag mode
  • Y piece occluded
  • Hit O2 button
    POSITIVE pressure relief mechanism (scavenging)
68
Q

KNOW FOR EXAM

if vacuum of SCAVENGING system is too strong, the gases to be delivered to the patient will not be affected (should be >0*)

A

NEGATIVE pressure relief mechanism (scavenging)
* APL OPEN
* Bag mode
* Y piece occluded

69
Q

KNOW FOR EXAM

Machine should be off, compress bulb then plug it in, it should stay compressed for 10 seconds
Turn on each vaporizer, repeat step

A

LOW-Pressure Circuit Leak Test

70
Q

KNOW FOR EXAM

  • Occlude Y-piece
  • All flows off
  • APL valve CLOSED
  • Bag mode
  • Hit O2 flush up to 30

Ensure 30 on gauge holds for 10 seconds, release pressure with APL valve

A

POSITIVE Pressure Leak Test

71
Q

Delivers gas from CGO to patient

A

breathing system

72
Q

pipeline and cylinder

A

high pressure system

73
Q

flowmeters and vaporizers

A

low pressure system

Principles of Anesthesia 1 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions