Test Flashcards

1
Q

Pa, Pv, PA
-Zone 1

A

PA > Pa > Pv1

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2
Q

Pa, Pv, PA
-Zone 2

A

Pa > PA > Pv

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3
Q

Pa, Pv, PA
-Zone 3

A

Pa > Pv > PA

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4
Q

V is greatest at lung _ from _ _ and Q is greatest there because of _

A

base
alveolar compliance
gravity

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5
Q

Most of the Vt distributed to the _ alveoli

A

dependent

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6
Q

Alveolar volume difference at end expiration and end inspiration is greastest at the _ (base/apex) and smallest at the _ (base/apex)

A

greatest difference at base

smallest difference at apex

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7
Q

Compliance = change in _ / change in _

A

change in volume / chnge in pressure

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8
Q

Awake lateral position:

A

abdominal content displaces dipahragm cephalad on the dependent side

on inspiration, diaphragm contraction makes more Vt (more ventilation) fill the dependent lung and perfusion is greater in the dependent lung

gas exchange remains efficient

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9
Q

What is HPV in regards to lungs?

A

hypoxic pulmonary vascoconstriction

-alveolar hypoxia causes pulm arteries to vasoconstrict and shunt blood from poorly ventilated area to the best ventilated areas = good, helps us do OLV effectively

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10
Q

Things that inhibit HPV:

A

-Mstenosis - increases pulm vasc pressure

MAC >1 - vasodilates pulm arteries and goes against HPV

Volume overload - peripheral vasodilation

HYPOthermia - increases pulm vasc resistance

Vasodilators -vasodilates

infection - vasodilates

metabolic alkalemia - vasodilates

vasoconstrictors- increase pulm blood flow to non ventilated lung tissue

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11
Q

TLC =

A

TLC = IRV + Vt + ERV + RV

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12
Q

FRC =

A

ERV + RV

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13
Q

VC =

A

IRV + Vt + ERV

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14
Q

FVC and FEV1 are low with low TLC = _ disease

A

obstructive

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15
Q

FVC and FEV1 low with high TLC = _ disease

A

restrictive

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16
Q

FEV1/FVC ratio normal =

A

0.7 or 0.8L
basically 4/5

17
Q

Obstructive disease would have a FEV1/FVC ratio of _ (greater/less) than 0.7L

A

Less or = 0.7

18
Q

Restrictive disease would have a FEV1/FVC ratio of _ (greater/less) than 0.7L

A

greater or = to 0.7

19
Q

FVC =

A

volume of gas expired rapidly and forcefully after 1 breath

N= 5L

20
Q

FEV1 =

A

volume of gas expired forcefully in 1sec

N=4L

21
Q

DLCO =

A

CO diffusion capacity
-measures all factors affecting diffusion across alveolar-capillary membrane

22
Q

_ test is the single strongest predictor of risk of complications and mortality after lung resection

A

DLCO
-predicted postop DLCO < 40% = increased risk

23
Q

Increased risk of postop complications and mortality after lung resection if postop predicted DLCO is < _ %

A

<40%

24
Q

What happens to lung volumes with anesthesia?
-VC
-ERV
-TV
-FRC
pulm compliance

A

decreases almost everything from loss of muscle tone

25
Q

What happens to lung volumes with aneshesia
-ERV

A

decreases

26
Q

Which of the following are examples of absolute indications for OLV?

a. infection (abscess/cyst)
b. massive hemorrhage
c. bronchopleural fistula
d. unilateral cyst or bullae
e. unitlateral lung lavage
f. video assisted thoracoscopic surgery
g. thoracic aneurysm
h. pneumonectomy
i. esophageal surgery

A

a-f

27
Q

Average size for DLT for women is _ fr and men is _ or _ fr

A

women = 37fr
**men = 39 or 41fr **

28
Q

Bronchial cuff on a DLT shouldnt be filled with more than _ mL of air and should be left down until isolation is needed

A

3mL

29
Q

If having a sudden change in ventilation during a case with a DLT, suspect _, which is one of the most common issues with DLT

A

malpositioning

30
Q

If peak pressure > 40cm H2O during OLV, suspect _ of the DLT/bronchial blocker

A

malpositioning

31
Q

If the DLT is placed on the L sd and the tracheal lumen is clamped, the _ lung will be inflated

A

Left

32
Q

If the L DLT is placed too deep in the L bronchus, only the _ lung will be inflated

A

left

33
Q

If a L DLT has the bronchial lumen clamped, the _ lung will be inflated

A

right

34
Q

Most effective maneuver to increase PaO2 during OLV is the application of _ to the _ (dependent/nondependent) lung

A

CPAP
nodependent

35
Q

If adding CPAP to the nondependent lung isn’t helping when hypoxemic during OLV, you can add _ to the _ (ventilated/nonventilated) lung

A

PEEP (5-10cm H2O)

ventilated

36
Q
A