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RCram > Mechanical Ventilation > Flashcards

Mechanical Ventilation Flashcards

(58 cards)

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1
Q

Indications for vent

A
  • VD/VQ> 60%
    -QS/QT >20%
    -A-a gradient >300mmhg
    -decreased VT< 5ml
    -MIP<~20
    -MEP<40cmh2o
    Mv < 5 or > 10
    -impeding respiratory failure
    -refractory hypoxemia
    RR <8 or 30>
    VC< 5ml/Kg
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2
Q

MIP explanation

A

Strength of patients diaphragm

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3
Q

MEP explanation

A

Strength of pt abdominal muscles

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4
Q

VD/VQ explanation

A

How much VT is lost to VD

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5
Q

QS/QT explanation

A

Any condition that causes collapses or fill alveoli with fluid.. causes a pulmonary shunt

<20%

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6
Q

A-a gradient explation

A

Determine the source of hypoxemia
<300

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7
Q

VC explanation

A

Is the amount of air that can be forcefully blown out

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8
Q

Impeding respiratory failure

A

Indicates an increase in Co2 levels.

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9
Q

Presistant hypoximia

A

.

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10
Q

Respiratory rate <8 or >30

A

Intitubate

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11
Q

Static compliance

A

<25ml/cm indicates how stiff the lungs are.

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12
Q

Persistent hypoxemia

A

Patient is unable to oxygenate

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13
Q

IPPV
IPAP setting

A

12cm h2o

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14
Q

IPPV
EPAP setting

A

5cmh2o

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15
Q

Modified jaw trust indicated with

A

Patients with suspected cervical injury

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16
Q

Permissive hypercapnia MV tx

A

Use a low VT

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17
Q

High PEEP is used in ARDS to prevent

A

Atelectotrauma

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18
Q

Capnography

A

Measures end tidal CO2

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19
Q

Capnography indications

A

Confirms ETT placement
MV
CPR

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20
Q

Capnography provides rapid detection of

A

Circuit disconnect
Esophageal intubation
Hyperventilation
Hypo ventilation

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21
Q

Aveoliar Mv

A

(Vt-dead space) * rate

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22
Q

What increases work of breathing

A

Deadespace COPD

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23
Q

Do not add dead space to patients with

A

Closed head injury
SIMV mode

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24
Q

Alveolar minuet ventilation

Study These Flashcards
A

Rate x (tidal volume - mechanical and anatomic deadspace)

25
Decrease in compliance causes
ARDS, atelectasis, pneumonia, pulmonary edema, pneumothorax, pulmonary fibrosis
26
Decreased compliance treatment on MV pt
Use low tidal volumes 4 to 6 Change mode to PC orHFOV
27
Decrease in compliance treatment
28
Rise in raw causes
Pip to rise
29
Increased raw causes
Bronhncospams Secretions Ett obstruction Or too small
30
Static compliance formula
Tidal volume/plateau – PEEP
31
Complications of auto Peep
Cardiac output Barotrauma Increases work of breathing
32
Pvo2 definition
Is the pressure oxygen mixed venous blood.
33
Pvo2 decreases when
Cardiac output & peep decreases
34
Pvo2 decreases when
Cardiac output & peep decreases
35
Pvo2 range
35 to 45
36
How to determine optimal PEEP
expiratory hold
37
Bronchospasm and airway secretions both increase this
Airway resistance
38
Which waveform can airtrapping best be observed?
Flow-time
39
Dynamic compliance calculation
Exhaled volume/PIP - PEEP
40
Static compliance calculation
Exhaled volume/Plateau - PEEP
41
Minute ventilation calculation
Rate x tidal volume
42
ARDS, pulmonary fibrosis, atelectasis, and pneumothorax all decrease this...
lung compliance
43
Calculation for anatomic deadspace
Anatomic deadspace = approximately 1 ml per pound
44
IPPB is used to
Help the patient take deeper breaths Stimulate cough Prevent Atelectasis
45
IPPB helps to
Improve gas exchange Increase lung compliance Reduce work of breathing
46
IPPB improves
Breath sounds Oxygenation Improves VC Chest X-ray Cough
47
IPPB Pressure controls
VT
48
IPPB Flow controls
I- time
49
IPPB sensitivity controls
Patient triggered breath
50
IPPB- increasing the flow will decrease the …
I-time
51
IPPB- decrease the flow will…
Increase the I-time
52
IPPB- premature cycling is due to
Tongue blocking mouthpiece Exhaling into mouthpiece
53
Static compliance
VT/Platue - peep
54
IBW male
50+2.3( height in”-60)
55
IBW female
45.5+ 2.3( height in”-60)
56
RSBI
<105
57
RSBI calculation
RSBI = rate/tidal volume in liters. Use the following steps to determine RSBI: First, convert ml into Liters. Next, divide rate by VT in liters by 0.7 to get RSBI
58
RSBI calculation
RSBI = rate/tidal volume in liters. Use the following steps to determine RSBI: First, convert ml into Liters. Next, divide rate by VT in liters by 0.7 to get RSBI

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