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Anesthesia Machine 6.1 Flashcards

1
Q

Identify the components of the low-pressure sytem in the anesthesia machine. (Select 2)
a. flowmeter tubes
b. oxygen flush valve
c. common gas outlet
d. cylinder pressure regulator

anesthesia machine

A

a. flowmeter tubes
c. common gas outlet

pre-lesson Q1

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2
Q

Match each component to its proper location in the SPDD model.
1. supply
2. disposal
3. delivery
4. processing
a. cylinder
b. vaporizer
c. circle system
d. scavenger

anesthesia machine

A

1a
2d
3c
4b

pre-lesson Q2

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3
Q

The PISS system is used to:
a. prevent the use of the wrong gas hose
b. prevent the use of the wrong gas cylinder
c. diagram the pathway of the gas through the anesthesia machine
d. filter and exchange the air in the operating room

anesthesia machine

A

b. prevent the use of the wrong gas cylinder

pre-lesson Q3

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4
Q

The bourdon pressure gauge on an oxygen cylinder reads 500 psi. If the flow rate is 2 L/min, how long will this cylinder provide oxygen to the patient? (minutes, whole number)

anesthesia machine

A

75, 83, 87 minutes

pre-lesson Q4

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5
Q

Identify the best practices for handling gas cylinders. (Select 2)
a. laying the cylinder on its side when changing the cylinder on the anesthesia machine
b. oiling cylinder valves every 6 months
c. placing two washers between the cylinder and the hanger yoke assembly
d. removing the plastic cover on the port when installing the cylinder

anesthesia machine

A

a. laying the cylinder on its side when changing the cylinder on the anesthesia machine
d. removing the plastic cover on the port when installing the cylinder

pre-lesson Q5

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6
Q

The oxygen pressure failure device activates when the: (Select 2)
a. oxygen pressure in the supply line is less than 20 psi
b. the oxygen pipeline contains nitrous oxide
c. FiO2 in the inspiratory limb is less than 21%
d. oxygen tank is exhausted

anesthesia machine

A

a. oxygen tank is exhausted
d. oxygen pressure in the supply line is less than 20 psi

pre-lesson Q6

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7
Q

The hypoxia prevention safety device on the anesthesia machine will:
a. shut off the flow of nitrous oxide if the oxygen supply pressure is less than 30 psi.
b. limit the nitrous oxide flow to three times oxygen flow
c. alarm if the FiO2 is less than 21%
d. will prevent a hypoxic mixture if a third gas is used

anesthesia machine

A

b. limit the nitrous oxide flow to three times oxygen flow

pre-lesson Q7

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8
Q

Which type of flowmeter float is read at the middle?
a. skirted
b. ball
c. plumb bob
d. nonrotating

anesthesia machine

A

b. ball

pre-lesson Q8

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9
Q

You are administering air 1 L/min and oxygen 3 L/min. Calculate the fraction of inspired oxygen. (percentage)

anesthesia machine

A

80

pre-lesson Q9

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10
Q

You are using an anesthesia machine that couples fresh gas flow to tidal volume and fully compensates for circuit compliance. Calculate the total tidal volume delivered to the patient. (mL, whole number)
oxygen: 3 L/min
air: 1 L/min
I:E: 1:2
bellows: 500 mL
RR: 10 bpm

anesthesia machine

A

632

pre-lesson Q10

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11
Q

A ventilator is programmed to deliver a tidal volume of 600 mL. If the breathing circuit compliance is 5 mL/cm H2O and the peak pressure is 25 cm H2O, what is the total tidal volume delivered to the patient?
a. 425 mL
b. 450 mL
c. 475 mL
d. 500 mL

anesthesia machine

A

b 475 mL

pre-lesson Q11

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12
Q

The isoflurane dial is set to 2%. What percent of fresh gas exiting the vaporizing chamber is saturated with isoflurane? (percentage)

anesthesia machine

A

100%

the rest of the fresh gas bypasses the vaporizing chamber

pre-lesson Q12

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13
Q

Which device will be the first to detect an oxygen pipeline crossover?
a. proportioning system
b. oxygen analyzer
c. fail-safe device
d. pulse oximeter

anesthesia machine

A

b. oxygen analyzer

pre-lesson Q14

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14
Q

What are the most critical actions to perform during an oxygen pipeline crossover? (Select 2)
a. disconnect the pipeline supply
b. replace the oxygen analyzer
c. ventilate with an ambu with the auxiliary oxygen flowmeter
d. turn on the oxygen tank

anesthesia machine

A

a. disconnect the pipeline supply
d. turn on the oxygen tank

pre-lesson Q15

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15
Q

Select the true statements regarding the oxygen flush valve. (Select 2)
a. the risk of barotrauma is minimzed by ventilators with fresh gas decoupling
b. it will deliver a continous pressure of 35-75 psi
c. excessive use can lead to awareness
d. it will cause the ventilator spill valve to close during inspiration

anesthesia machine

A

a. the risk of barotrauma is minimized by ventilators with fresh gas decoupling
c. excessive use can lead to awareness

pre-lesson Q16

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16
Q

Select the true statements about the pneumatic ventilator bellows. (Select 2)
a. a descending bellows is made safer by fresh gas coupling
b. a descending bellows cannot rise and fall with a circuit disconnect
c. a leak in the bellows may cause the reading on the oxygen analyzer to increase
d. a hole in the bellows may cause barotrauma

anesthesia machine

A

c. a leak in the bellows may cause the reading on the oxygen analyzer to increase
d. a hole in the bellows may cause barotrauma

pre-lesson Q17

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17
Q

The piston ventilator: (Select 2)
a. relies on fresh gas flow coupling
b. preserves tank oxygen in the event of oxygen pipeline failure
c. allows for more precise delivery of tidal volumes
d. removes the risk of barotrauma

anesthesia machine

A

b. preserves tank oxygen in the event of oxygen pipeline failure
c. allows for more precise delivery of tidal volumes

pre-lesson Q18

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18
Q

Which statement regarding pressure controle ventilation is true? (Select 2)
a. the risk of ventilator-associated lung injury is decreased
b. increased lung compliance will decrease tidal volume
c. gas flow decelerates during inspiration
d. the ventilator switches to expiration after a preset pressure is achieved

anesthesia machine

A

a. the risk of ventilator-associated lung injury is decreased
c. gas flow decelerates during inspiration

pre-lesson Q19

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19
Q

Which modes of mechanical ventilation are best suited for a laryngeal mask airway? (Select 2)
a. synchronized intermittent mandatory ventilation
b. inverse ratio ventilation
c. pressure support ventilation
d. controlled mandatory ventilation

anesthesia machine

A

a. sychronized intermittent mandatory ventilation
c. pressure support ventilation

pre-lesson Q20

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20
Q

At what pH does the ethyl violet change to purple?
a. 7.5
b. 8.6
c. 10.3
d. 12.1

anesthesia machine

A

c. 10.3

pre-lesson Q21

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21
Q

When compared to soda lime, what factor is increased with the use of calcium hydroxide lime?
a. carbon monoxide
b. frequency of of replacement
c. CO2 absorption capacity
d. fire risk

anesthesia machine

A

b. frequency of replacement

pre-lesson Q22

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22
Q

While a patient is ventilating spontaneously with an endotracheal tube, you notice that a fresh gas flow of 10 L/min is required to fill the breathing bag and determine that the scavenger is malfunctioning. Which statement must be true?
a. the negative pressure relief valve has failed
b. the positive pressure relieft valve as failed
c. there is an open scavenging system
d. there is a passive scavenging system

anesthesia machine

A

a. the negative pressure relief valve has failed

pre-lesson Q23

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23
Q

What is the most common cause of low circuit pressure?
a. leak in corrugated tubing
b. circuit disconnect
c. incompetent ventilator relief valve
d. improper fitting of carbon dioxide absorbent

anesthesia machine

A

b. circuit disconnect

pre-lesson Q24

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24
Q

During a general anesthetic with an endotracheal tube, the high peak pressure alarm sounds. After changing the bag selector switch from ventilator mode to bag mode, the peak inspiratory pressure returns to baseline. What is the most likely explanation for the rise in peak inspiratory pressure?
a. the positive pressure relief valve on the scavenger failed
b. the endotracheal tube was kinked
c. the patient experienced bronchospasm
d. the ventilator spill valve malfunctioned

anesthesia machine

A

d. the ventilator spill valve malfunctioned

pre-lesson Q25

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25
Which value exceeds OSHA's recommended standards for occupational exposure to inhalation anesthetics in the operating room? a. sevoflurane 1.8 ppm b. desflurane 0.8 ppm c. sevoflurane 1.0 ppm + nitrous oxide 15 ppm d. desflurane 0.3 ppm + nitrous oxide 20 ppm ## Footnote anesthesia machine
c. sevoflurane 1.0 ppm + nitrous oxide 15 ppm ## Footnote pre-lesson Q26
26
Which monitor will be the first to detect an oxygen-pipeline crossover? a. failsafe device b. oxygen analyzer c. hypoxia prevention safety device d. pulse oximeter ## Footnote anesthesia machine
b. oxygen analyzer | measures O2 conc. inside the breathing circuit; ## Footnote post lesson quiz
27
Which situations would produce negative pressure inside the breathing circuit? (Select 2) a. an orogastric tube placed in the trachea b. tear in the ventilator bellows c. circuit disconnect d. malfunction of a closed-system scavenger ## Footnote anesthesia machine
a. an orogastric tube placed in the trachea d. malfunction of a closed-system scavenger ## Footnote post lesson question
28
According to the US DoT, the gas cylinder label must include the: (Select 2) a. critical temperature b. intended use c. date of last inspection d. serial number ## Footnote anesthesia machine
c. date of last inspection d. serial number ## Footnote post lesson quiz
29
The transfer tubing joins which components of the scavenger? (Select 2) a. APL valve b. gas disposal assembly c. scavenger interface d. gas disposal assembly tubing ## Footnote anesthesia machine
a. APL valve c. scavenger interface ## Footnote post lesson quiz
30
What is the most likely cause of a lower than expected concentration of sevoflurane inside the breathing circuit? a. bellows leak b. pumping effect c. delivery at altitude d. tipped vaporizer ## Footnote anesthesia machine
a. bellows leak ## Footnote post lesson quiz
31
A negative deflection is observed on the airway pressure waveform when the mechanical ventilator is activated. Which mode of ventilation is the patient most likely receiving? (Select 2) a. controlled mandatory ventilation b. biphasic positive airway pressure c. inverse ratio ventilation d. pressure-support ventilation protect ## Footnote anesthesia machine
b. biphasic positive airway pressure d. pressure-support ventilation protect ## Footnote post lesson quiz
32
What is the minimum recommended pressure when performing a high-pressure leak test on the anesthesia machine? (cm H2O) ## Footnote anesthesia machine
30 cm H2O ## Footnote post lesson quiz
33
Which components of the anesthesia machine could be affected if the low-pressure leak test fails? (Select 2) a. vaporizer b. flowmeter c. reservoir bag d. inspiratory valve ## Footnote anesthesia machine
a. vaporizer b. flowmeter | components of the low-pressure circuit ## Footnote post lesson quiz
34
The pressure in which type of cylinder will remain constant regardless of how much liquid is present inside the tank? a. carbon dioxide b. nitrogen c. helium d. air ## Footnote anesthesia machine
a. carbon dioxide | CO2 and N2O, not nitrogen ## Footnote post lesson quiz
35
Which agency regulates health care worker exposure to anesthetic gases in the operating room? a. American Society for Testing and Materials b. United States Department of Transportation c. Occupational Safety and Health Administration d. Food and Drug Administration ## Footnote anesthesia machine
c. Occupational Safety and Health Administration ## Footnote post lesson quiz
36
Components of the Low Pressure System ## Footnote anesthesia machine
common gas outlet vaporizers thorpe tubes ## Footnote section 1 flashcard
37
Components of the Intermediate Pressure System ## Footnote anesthesia machine
oxygen pressure failure device flowmeter valves oxygen flush valve pipeline inlets ## Footnote section 1 flashcard
38
Components of the High Pressure System ## Footnote anesthesia machine
hanger yoke cylinder pressure gauge cylinder pressure regulator ## Footnote section 1 flashcard
39
What signifies a failed low-pressure leak test? ## Footnote anesthesia machine
test is performed by attaching a bulb to the common gas outlet and creating negative pressure; failure occurs if the bulb reinflates within 10 seconds ## Footnote section 1 flashcard
40
How much negative pressure should be created for a proper negative-pressure test? ## Footnote anesthesia machine
-65 cm H2O ## Footnote section 1 flashcard
41
Should the vaporizer be on or off during a low-pressure leak test? ## Footnote anesthesia machine
both; the vaporizers should be off at first but then the test should be repeated with vaporizer turned on ## Footnote section 1 flashcard
42
List the 4 components of the SPDD model. ## Footnote anesthesia machine
Supply Processing Delivery Disposal ## Footnote section 2 flashcard
43
Name 5 tasks of oxygen in the anesthesia machine. ## Footnote anesthesia machine
1. O2 pressure alarm 2. O2 pressure device 3. O2 flowmeter 4. O2 flush valve 5. ventilator drive gas ## Footnote section 2 flashcard
44
What is the pin configuration for oxygen? ## Footnote anesthesia machine
2,5 ## Footnote section 3 flashcard
45
What is the pin configuration for air? ## Footnote anesthesia machine
1, 5 ## Footnote section 3 flashcard
46
What is the pin configuration for nitrous oxide? ## Footnote anesthesia machine
3, 5 ## Footnote section 3 flashcard
47
What is the function of the diameter index safety system? ## Footnote anesthesia machine
prevents inadvertent misconnections of gas hoses ## Footnote section 3 flashcard
48
What is the function of the pin index safety system? ## Footnote anesthesia machine
prevents inadvertent misconnections of gas cylinders ## Footnote section 3 flashcard
49
What is the maximum volume of each type of cylinder: oxygen, air, nitrous oxide? ## Footnote anesthesia machine
oxygen: 660L air: 625L nitrous oxide: 1590L ## Footnote section 4 flashcard
50
What is the maximum pressure inside each type of cylinder: oxygen, air, nitrous oxide? ## Footnote anesthesia machine
oxygen: 1900-2000 psi air: 1900 psi nitrous oxide: 745 psi ## Footnote section 4 flashcard
51
Which agency sets the standards for the required components of the anesthesia machine? ## Footnote anesthesia machine
American Society for Testing and Materials (ASTM) ## Footnote section 5 flashcard
52
Which agency developed the Anesthesia Machine Pre-Use Checkout procedures? ## Footnote anesthesia machine
Food and Drug Administration (FDA) ## Footnote section 5 flashcard
53
Which agency sets the standards for acceptable occupational exposure to volatile anesthetics? ## Footnote anesthesia machine
Occupational Safety and Health Administration (OSHA) ## Footnote section 5 flashcard
54
Which agency sets the requirements for compressed gas cylinders? ## Footnote anesthesia machine
United States Department of Transportation (DOT) ## Footnote section 5 flashcard
55
What is the purpose of the oxygen failsafe device? ## Footnote anesthesia machine
To monitor for (and protect against) low oxygen pressure in the anesthesia machine ## Footnote section 6 flashcard
56
The oxygen failsafe device will alert you to what 3 problems? ## Footnote anesthesia machine
1. Depleted O2 tank 2. A drop in pipeline pressure 3. Disconnected O2 supply hose ## Footnote section 6 flashcard
57
In what pressure system does the oxygen failsafe device reside? ## Footnote anesthesia machine
Intermediate pressure system ## Footnote section 6 flashcard
58
When does the oxygen failsafe device fail to detect a hypoxic mixture? ## Footnote anesthesia machine
1. oxygen-pipeline crossover 2. flowmeter leak ## Footnote section 6 flashcard
59
What is another name for the oxygen failsafe device? ## Footnote anesthesia machine
oxygen pressure failure device ## Footnote section 6 flashcard
60
List 4 situations where the proportioningn device can't prevent a hypoxic mixture. ## Footnote anesthesia machine
1. oxygen pipeline crossover 2. leaks distal to the flowmeter valves 3. administration of a third gas 4. defective mechanic or pneumatic components ## Footnote section 7 flashcard
61
What is anothoer name for the proportion device? ## Footnote anesthesia machine
hypoxia prevention safety device ## Footnote section 7 flashcard
62
What is the minimum FiO2 permitted by the proportioning device? ## Footnote anesthesia machine
25% ## Footnote section 7 flashcard
63
How does the proportioning device work? ## Footnote anesthesia machine
It limits N2O flow to 3 times the O2 flow (N2O max ~75%) ## Footnote section 7 flashcard
64
What is the annular space? ## Footnote anesthesia machine
the area between the float and sidewall of the flowmeter ## Footnote section 8 flashcard
65
Describe the internal geometry of the flowmeter. ## Footnote anesthesia machine
The flowmeter is narrowest at the base and widens along its ascent. This creates a "variable orifice" architecture. ## Footnote section 8 flashcard
66
What is the equation for Reynolds' number? ## Footnote anesthesia machine
Density x Diameter x Velocity / Viscosity ## Footnote section 8 flashcard
67
What is the safest position for the oxygen flowmeter as it relates to other gas flowmeters? ## Footnote anesthesia machine
Positioned on the far right (closest to the manifold outlet) ## Footnote section 8 flashcard
68
Calculate the fraction of inspired oxygen. oxygen: 10 L/min air: 3 L/min ## Footnote anesthesia machine
FiO2 = 81.77% | (100 x O2 L) + (21 x air L) / total L ## Footnote section 9 flashcard
69
Calculate the fraction of inspired oxygen. oxygen: 8 L/min air: 10 L/min ## Footnote anesthesia machine
FiO2 = 56.11% | (100 x O2 L) + (21 x air L) / total L ## Footnote section 9 flashcard
70
Calculate the fraction of inspired oxygen. oxygen: 1 L/min air: 5 L/min ## Footnote anesthesia machine
FiO2 = 16.84% | (100 x O2 L) + (21 x air L) / total L ## Footnote section 9 flashcard
71
Changes that increase Tidal Volume ## Footnote anesthesia machine
decreased respiratory rate increased I:E ratio (1:2 to 1:1.5) increased bellows height increased gas flow ## Footnote section 10 flashcard
72
Changes that decrease Tidal Volume ## Footnote anesthesia machine
increased respiratory rate increased I:E ratio (1:2 to 1:3) decreased bellows height decreased gas flow ## Footnote section 10 flashcard
73
Define compliance. ## Footnote anesthesia machine
change in volume over change in pressure ## Footnote section 11 flashcard
74
How does circuit compliance affect the tidal volume delivered to the patient? ## Footnote anesthesia machine
If it is not compensated for, the tidal volume will decrease. Some machines automatically compensate. ## Footnote section 11 flashcard
75
What should you do if the vaporizer is tipped over? ## Footnote anethesia machine
1. drain the vaporizer to remove all the liquid anesthetic. 2. Turn the dial to the highest setting and run a high FGF for 20-30 minutes. ## Footnote section 12 flashcard
76
What is the "T" setting on the vaporizer? ## Footnote anesthesia machine
Setting the vaporizer to transport mode (T) eliminates the worry of tipping the vaporizer during transport or removal. ## Footnote section 12 flashcard
77
What is the most common cause of a vaporizer leak? ## Footnote anesthesia machine
Loose filler cap ## Footnote section 12 flashcard
78
Does a variable bypass vaporizer need to be calibrated for elevation? ## Footnote anesthesia machine
No ## Footnote section 12 flashcard
79
How does the vaporizer minimize the effect of cooling on vapor pressure and vaporizer output? ## Footnote anesthesia machine
The temperature compensating valve adjusts the ratio of vaporizing chamber flow to bypass flow and guarantees a constant vaporizer output over a wide range of temperatures. ## Footnote section 12 flashcard
80
Variable bypass vaporizer characteristics ## Footnote anesthesia machine
compensates for elevation flow over design temperature compensation valve variable bypass ## Footnote section 13 flashcard
81
Datex-Ohmeda Tec 6 characteristics ## Footnote anesthesia machine
requires electical power pressurized to 2 atmospheres heated to 39 degrees does not compensate for elevation dual circuit design ## Footnote section 13 flashcard
82
Why will a pyrexic 70-kg patient become hypoxic with an oxygen flow rate at 250 mL/min in a closed-circuit system? ## Footnote anesthesia machine
The VO2 for the average adult is 250 mL/min. Conditions such as fever, sepsis, and thyrotoxicosis will increase O2 consumption. ## Footnote section 14 flashcard
83
The oxygen analyzer resides in what limb of the breathing circuit? ## Footnote anesthesia machine
inspiratory limb ## Footnote section 14 flashcard
84
What 2 immediate actions must you take if the oxygen pipeline supply fails? ## Footnote anesthesia machine
1. Turn on the oxygen cylinder 2. Disconnect the pipeline oxygen supply ## Footnote section 15 flashcard
85
What should be at the top of your differential when the O2 analyzer alarms? ## Footnote anesthesia machine
O2 pipeline crossover until other causes can be ruled out. ## Footnote section 15 flashcard
86
What 2 functions does the drive gas on a pneumatic ventilator serve? ## Footnote anesthesia machine
1. It compresses the bellows 2. It opens and closes the ventilator spill valve ## Footnote section 16 flashcard
87
What is the positive of the ventilator spill valve during inspiration? ## Footnote anesthesia machine
It's closed. This ensures that the tidal volume goes to the patient and not to the scavenger. ## Footnote section 16 flashcard
88
What is the minimum expiratory pressure needed to open the ventilator spill valve? ## Footnote anesthesia machine
3 cm H2O ## Footnote section 16 flashcard
89
Pressing the O2 flush exposes to breathing circuit what pressure? ## Footnote anesthesia machine
50 psi (pipeline pressure) ## Footnote section 16 flashcard
90
Pressing the O2 flush exposes to breathing circuit what flow rate? ## Footnote anesthesia machine
35-75 L/min ## Footnote section 16 flashcard
91
List 2 complications caused by overuse of the oxygen flush valve. ## Footnote anesthesia machine
1. barotrauma 2. awareness ## Footnote section 16 flashcard
92
How does an ascending bellows move during inspiration? ## Footnote anesthesia machine
it falls ## Footnote section 17 flashcard
93
Will a descending bellows fill during a circuit disconnect? ## Footnote anesthesia machine
Yes, it can fill with entrained room air. ## Footnote section 17 flashcard
94
How will a bellows leak affect the inspired concentration of anesthetic agent? ## Footnote anesthesia machine
It will dilute the anesthetic concentration. ## Footnote section 17 flashcard
95
Piston ventilator characteristics ## Footnote anesthesia machine
-decouples FGF from Vt -contains a positive pressure relief valve -contains a negative pressure relief valve -reservoir bag inflates during inspiration ## Footnote section 18 flashcard
96
Volume Controlled Ventilation characteristics -PIP -inspiratory flow rate -Vt ## Footnote anesthesia machine
PIP: variable inspiratory flow rate: fixed Vt: fixed ## Footnote section 19 flashcard
97
Pressure Controlled Ventilation -PIP -inspiratory flow rate -Vt ## Footnote anesthesia machine
PIP: fixed inspiratory flow rate: variable Vt: variable ## Footnote section 19 flashcard
98
T/F: A risk of assist control mechanical ventilation is respiratory alkalosis. ## Footnote anesthesia machine
True ## Footnote section 20 flashcard
99
T/F: SIMV increases the risk of patient-ventilator asynchrony. ## Footnote anesthesia machine
False ## Footnote section 20 flashcard
100
T/F: BiPAP requires you to set the Vt. ## Footnote anesthesia machine
False ## Footnote section 20 flashcard
101
T/F: CMV is best suited for apneic patients. ## Footnote anesthesia machine
True ## Footnote section 20 flashcard
102
T/F: IRV requires a paralyzed and sedated patient. ## Footnote anesthesia machine
True ## Footnote section 20 flashcard
103
T/F: PSV-Pro is useful for a patient with an LMA. ## Footnote anesthesia machine
True ## Footnote section 20 flashcard
104
T/F: Pressure support provides backup for apnea. ## Footnote anesthesia machine
False ## Footnote section 20 flashcard
105
What are the 2 major problems that can occur with carbon dioxide absorbent? ## Footnote anesthesia machine
1. The absorbent is exhausted. 2. The absorbent is desiccated. ## Footnote section 21 flashcard
106
Why is silica added to soda lime? ## Footnote anesthesia machine
It provides hardness and minimized dust production. ## Footnote section 21 flashcard
107
What is the ideal mesh size for CO2 absorbent? ## Footnote anesthesia machine
4-8 mesh ## Footnote section 21 flashcard
108
Does indicator dye alert you to CO2 absorbent desiccation? ## Footnote anesthesia machine
No. It only tells you if the absorbent is exhausted. ## Footnote section 21 flashcard
109
What are 3 benefits of calcium hydroxide over soda lime? ## Footnote anesthesia machine
1. There is no carbon monoxide production. 2. There is very little or no compound A production. 3. There may be a lower risk of fire. ## Footnote section 22 flashcard
110
What are 2 drawbacks of calcium hydroxide when compared to soda lime? ## Footnote anesthesia machine
1. The absorptive capacity is less than soda lime. 2. It's more expensive. ## Footnote section 22 flashcard
111
Which component scavenger system determines if it's an open or closed system? ## Footnote anesthesia machine
the scavenging interface ## Footnote section 23 flashcard
112
What type of scavenging system communicates to the atmosphere with pressure valves? ## Footnote anesthesia machine
closed system ## Footnote section 23 flashcard
113
What valves must be present on a closed interface - active scavenger? ## Footnote anesthesia machine
1. Negative pressure relief valve 2. Positive pressure relief valve ## Footnote section 23 flashcard
114
What is the most common source of preventable equipment related complications? ## Footnote anesthesia machine
circuit disconnect ## Footnote section 24 flashcard
115
Recite 4 ways to detect a circuit disconnect. ## Footnote anesthesia machine
1. Pressure 2. Volume 3. EtCO2 4. Your vigilance ## Footnote section 24 flashcard
116
What should you do if the breathing circuit doesn't hold pressure in the middle of a procedure? ## Footnote anesthesia machine
Ventilate the patient with a bag-valve-mask and oxygen tank. Provide TIVA if necessary. ## Footnote section 24 flashcard
117
What are 4 CV consequences caused by excessive pressure in the breathing circuit? ## Footnote anesthesia machine
1. Decreased venous return 2. Decreased cardiac output 3. Hypotension 4. Cardiovascular collapse ## Footnote section 25 flashcard
118
What should you do if the ventilator spill valve fails in the middle of a procedure? ## Footnote anesthesia machine
Remove the patient from the ventilator, and use a backup source of ventilation. Consider TIVA if needed. ## Footnote section 25 flashcard
119
What is the OSHA maximum environmental exposure to halogenated agents? ## Footnote anesthesia machine
<2 ppm ## Footnote section 26 flashcard
120
What is the OSHA maximum environmental exposure to nitrous oxide? ## Footnote anesthesia machine
<25 ppm ## Footnote section 26 flashcard
121
What is the OSHA maximum environmental exposure to halogenated agents with nitrous oxide in use? ## Footnote anesthesia machine
0.5 ppm ## Footnote section 26 flashcard

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