Unit 6 Flashcards

1
Q

What is Static compliance?

A

Measures compliance of lung during an inspiratory hold - During NO flow

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2
Q

What is dynamic compliance?

A

Measures compliance of lung tissue during gas flow

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3
Q

What is the equation for static compliance?

A
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4
Q

What is the equation for COMPLIANCE?

A

Change in volume / Change in pressure

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5
Q

What is the equation for dynamic compliance?

A
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6
Q

CVP waveform photo 1

A
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7
Q

CVP waveform 2

A
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8
Q

What is the “a” wave on the CVP?

A

Atrial contraction

Will see a downstroke on CVP

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9
Q

What is the “c” wave on the CVP?

A

It is the tricuspid valve bulging into the RA during isovolumetric contraction of the RV

Will see an upstroke on the CVP

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10
Q

What is the “x” wave on the CVP?

A

Atrial relaxation occurs after RV ejection

Downstroke on CVP

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11
Q

What is the “v” wave on the CVP?

A

Systolic filling of the RA against a closed Tricuspid valve

Upstroke on CVP

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12
Q

What is the “y” wave on the CVP?

A

atrial emptying into the RV through a open TV

downstroke on CVP

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13
Q

What is a normal CVP?

A

2-10

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14
Q

CVP overall photo

A
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15
Q

What change will be seen on the CVP with afib?

A

Loss of a wave

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16
Q

What change will be seen on the CVP with AV dissociation?

A

Cannon a wave

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17
Q

What change will be seen on the CVP with tricuspid regurg?

A

Loss of x decent

Tall c and v waves

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18
Q

What change will be seen on the CVP with tricuspid stenosis?

A

Tall a and v waves

Minimal y descent

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19
Q

What change will be seen on the CVP with RV ischemia?

A

Tall a and v waves

M or W configuration

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20
Q

What change will be seen on the CVP with cardiac tamponade?

A

Minimal y descent

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21
Q

PSI of O2 tank? Number of liters?

A

PSI - 1900
L - 660

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22
Q

Which components of the gas machine are most vulnerable?

A

Anything in the low-pressure system

Circle breathing circuit
Flow tubes
Vaporizer manifold

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23
Q

Where does the low-pressure system begin?

A

Flowmeter tubes and ends at common gas outlet

24
Q

What part of the system is the oxygen flush valve?

A

Intermediate - straight from pipeline

25
What is the first step in treatment for oxygen desaturation in an ARDS patient?
Increase PEEP Optimal level is 5-12 Go slow
26
What fresh gas flow rate will prevent rebreathing in a Mapleson D semi open circuit?
2.5x the patients minute ventilation rate
27
What is the purpose of water in carbon dioxide absorbent?
Reacts chemically with CO2 to form carbonic acid
28
What is the range of water weight in CO2 absorbent?
13-20%
29
Which disease makes an ART line unreliable?
Severe PAD or anything that effects arterial compliance
30
BIS levels?
31
How does fresh gas flow rate correlate to O2 consumption in a closed-circuit system?
Try to match them. The fresh gas flow rate needs to be high enough to maintain O2 consumption
32
What is an adults O2 consumption?
3-3.5mL/kg/min
33
How is MAP measured during oscillometric noninvasive BP?
At maximal amplitude of oscillations
34
Formula for MAP?
2/3 DBP + 1/3 SBP
35
How does Fluorescein effect Pulse Ox?
Does not interfere
36
How does Methylene Blue effect Pulse Ox?
Can cause false low O2 saturation
37
How does Indocyanine green effect Pulse Ox?
Can cause false low O2 saturation
38
How does Indigo Carmine effect Pulse Ox?
Can cause false low O2 saturation
39
What is the red-light wavelength?
660 nm
40
What is the infrared light wavelength?
940 nm
41
Best TEE view for ischemia with LAD, RCA, Circumflex?
Transgastric midpapillary short axis view
42
Best TEE view for foramen ovale, ASD, cannula position and pacer wires?
Bicaval
43
Best TEE view for LV apex?
Transgastric long-axis view
44
Best TEE view for inferolateral and anteroseptal walls, LA, LV, RA, and RV?
Mid-esophageal long axis
45
How separates the intermediate and low-pressure systems?
Flow control valves I think they are technically apart of the intermediate system??
46
With methemoglobinemia, what will the pulse ox read? What will the SpO2 actually be?
85% Real SpO2 could be higher or lower
47
Pressure and liters of N2O?
1600 L Pressure 745
48
When will the pressure drop in a N2O tank?
When it drops below 400L or 25% used
49
Who is at risk and what happens in Brugada syndrome?
Sodium channels Have a pseudo RBBB and ST elevation in leads V1-V3 Southeast Asian men
50
Where should the tip of a CVC be?
Above the carina T4/T5 space
51
Where does the plumb-bob measure flow?
Top of the float
52
Where does the ball measure flow?
Middle of the ball
53
Where does the non-rotating skirted measure flow?
At the top
54
Where does the skirted float measure flow?
At the top
55
What are the purposes of the failsafe device?
-Senses pressure NOT concentration -Alarms if pressure drops below 30 psi Proportionally links O2 and N2O at 3:1