Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Principles of Anesthesia I (Summer 2024: Cooper) > Exam 3 Anesthesia Machines (Workstations) (7/8/24) > Flashcards

Exam 3 Anesthesia Machines (Workstations) (7/8/24) Flashcards

(44 cards)

Start Studying
1
Q

What 5 things should an anesthesia machine provide?

A
  1. Accurate and safe gas delivery
  2. A means for ventilating patients (Primary method)
  3. Electrical Outlets
  4. A housing for monitoring devices
  5. Storage/Shelving
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

If the Master power switch has been turned off, electrical functions will be disabled except for:

A
  • Battery Charger
  • Electrical Outlets
  • Oxygen flush valve
  • Auxillary oxygen flowmeter
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

True or False:
Other appliances (not intended for anesthesia monitoring) should be plugged in to the anesthesia machine outlets in order to save wall space.

A

FALSE:

Other appliances should be plugged into hospital main

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

If requirements exceed outlet, this happens:

A

Circuit breaker will activate and entire machine will fail.

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

What are the 3 parts to the pneumatic system?

A
  1. High Pressure
  2. Intermediate Pressure
  3. Low Pressure
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The machine receives gases from the cylinders at high, variable pressures of about ___ psi and reduces them down to ___ psi.

A

2200 psi

45 psi

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

What is utilized by the anesthesia machine to reduce/provide a more constant pressure once gases are received from the cylinders?

A

A Pressure (1st Stage) Regulator

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

What is this an image of?

A

A Hanger Yoke

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

What are the functions of the Hanger Yoke?

A
  • Orients and supports the cylinder
  • Provides a gas-tight seal
  • Ensures a unidirectional flow (safety valves inside)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

We are required to have at least 1 Hanger yoke for which of the following?

Oxygen
Medical Air
Nitrous

A

Oxygen and Nitrous

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

For each of the following, label the name of what each part of the hanger yoke is responsible for:

Tightening the cylinder
Area where gas enters the machine
Prevents attachment of an incorrect cylinder
Forms seal between the cylinder and yoke
Ensures unidirectional flow

A

Tightening the cylinder: Retaining Screw
Area where gas enters the machine: Nipple
Prevents attachment of an incorrect cylinder: Index Pins
Forms seal between the cylinder and yoke: Washer
Ensures unidirectional flow: Check valve assembly

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

What does the check valve assembly prevent?

A

Prevents gas from exiting machine when there is no cylinder in the yoke

Prevents gas from being transferred from a cylinder with higher pressure to one with lower pressure

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

What are the names of the tubes found in the cylinder pressure indicator?
Describe the look of these tubes.

A

Bourdon Tubes

Curved and Hollow

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

The cylinder pressure indicator/gauge is required to be calibrated in which of the following two units?

A. Newtons
B. PSI
C. Pascals
D. Joules
E. Kilopascals (kPa)

A

B. PSI
E. Kilopascals (kPa)

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

How is gas introduced into the Intermediate portion of the pressure system?

A

Receives gases from the pressure regulator or pipeline
(45 psi 1st stage regulator) (50-55 psi pipeline)

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

The intermediate pressure system includes these 6 things:

A
  1. Pneumatic part of master switch
  2. Pipeline inlet connections and indicators
  3. Piping
  4. Oxygen pressure failure devices
  5. Oxygen flush valve
  6. Flow control valves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How are the pipeline inlet connections fitted?

A

Via the DISS (Diameter Index Safety System)

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

Are the top or bottom pressure indicators reading the pressures from the wall or from the cylinders?

Study These Flashcards
A

Top: Wall
Bottom: Cylinder

19
Q

In the intermediate pressure system, the piping must be able to withstand ___ the intended pressure.
It must also not allow leaks to exceed ___ inside the machine.

Study These Flashcards
A

4x intended pressure

25 ml/min inside the machine

20
Q

When will the oxygen failure safety device alarm?

Study These Flashcards
A

If oxygen pressure is reduced to 30 psi

21
Q

How long will it take for an alarm to sound if there is complete oxygen failure?

22
Q

This device receives oxygen from pipeline inlet or cylinder pressure regulator and sends O2 to common gas outlet

23
Q

The oxygen flush must have a flow between ___ and ___.

24
Q

The use of the oxygen flush comes with hazards, including these two potential adverse effects patients may experience.

Study These Flashcards
A

Barotrauma
Awareness (dilution of gas)

25
Which flow knob must be fluted and larger than other gases so that it looks and feels different?
The **oxygen** flow knob
26
The amount of pressure in the low pressure system should be: A. Slightly above atmospheric pressure and constant B. Slightly below atmospheric pressure and constant C. Slightly above atmospheric pressure and variable D. Slightly below atmospheric pressure and variable
C. Slightly above atmospheric pressure and variable Depends on flow from flowmeters and backpressure from breathing circuit
27
The low pressure system includes:
Flowmeters Hypoxia prevention devices Unidirectional valves Pressure relief devices Common gas outlet
28
What kind of tubes are flowmeters? Describe these tubes:
Thorpe Tubes Smallest diameter at bottom = increases in diameter as you go up Free floating indicator (flat on the top) A stop at the top of tube
29
The 2nd stage regulator is located in the ___ and maintains a psi of ___ - ___.
The 2nd stage regulator is located in the **flowmeters** and maintains a psi of **14-30**.
30
Standard requires oxygen flowmeter to be placed on which side of the machine? Why?
Right Side! (closest to the patient) If there is an oxygen leak and it was in the 1st or 2nd flow meter position = you lose ALL of the gases If it is on the far right, a leak in the Nitrous and Air won’t cause a leak in the oxygen.
31
Which of the following display the safest flowmeter sequence?
C and D (Oxygen flow meter on the far right)
32
What are the 2 hypoxia prevention devices in the low pressure system that were highlighted in lecture?
* Mandatory Minimum Oxygen Flow * Minimum Oxygen Ratio
33
When the master switch is turned on, the mandatory minimum oxygen flow will provide a minimum flow of ___.
50-250 ml/min
34
What is the minimum oxygen ratio? When does this kick in?
Mechanical linkage (ratio) when doing a case with nitrous that prevents us from giving ALL nitrous and no oxygen. When oxygen concentration drops to 25%
35
Where are the unidirectional valves located in the low pressure system?
Located between vaporizer and common gas outlet, upstream from the oxygen flush valve.
36
What do the unidirectional valves aim to reduce?
Lessens back pressure from flush or breathing circuit.
37
Where are the pressure relief devices located? (Specifically in the low pressure system)
Near the common gas outlet
38
Because the pressure relief devices open to the atmosphere and vents if preset pressure is exceeded, it has limited ability for ___.
Jet ventilation
39
The common gas outlet should not be used to deliver ___. Why?
Supplemental oxygen * Delay in emergencies * Potential delivery of inhalational agents
40
What is the function of the alternative oxygen control?
Delivers oxygen in case of electronic power failure
41
Correctly identify the primary location (High, Intermediate, Low pressure system) for all of the following components of the anesthesia machine. Flowmeters: Pipeline Inlets: Cylinders: Pressure relief valve: Vaporizer: Flow Control Valve: Hanger Yoke:
Flowmeters: **Low** Pipeline Inlets: **Intermediate** Cylinders: **High** Pressure relief valve: **Intermediate** **AND Low** Vaporizer: **Low** Flow Control Valve: **Intermediate** Hanger Yoke: **High**
42
This component of the anesthesia machine is found in all the pressure systems (mostly High and Intermediate):
Check Valves
43
Which locations in the anesthesia machine are the "Filters" and "pressure gauges" most abundant?
High and Intermediate
44
In which pressure system is the power outlet, oxygen flush and oxygen pressure alarm found?
Intermediate

Principles of Anesthesia I (Summer 2024: Cooper) (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions