Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CP Test 3 > B4-023 Mechanics of Ventilation > Flashcards

B4-023 Mechanics of Ventilation Flashcards

1
Q

inspiration is [active/passive]

A

active

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

expiration is [active/passive]

A

passive

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

lungs intrinsic tendency to deflate following inhalation

A

elastic recoil

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

PPL at rest is always

A

-5

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

when no airflow, PA is always

A

0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

transpulmonary pressure equation

A

PA-PPL

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

pressure of gas is […] related to volume

A

inversely

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

increasing the lung volume […] pressure

A

decreases

air can enter lung

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

decreasing lung volume […] pressure

A

increases

air exits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

normal atmospheric pressure adjusts to […] cm H20 for ventilation equations

A

0 cm H2O

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

at rest with no inspiration, atmospheric and alveolar pressures are

A

zero

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

intrapleural pressure is […] than atmospheric pressure

A

less

less than 0

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

at rest, intrapleural pressure is

A

-5 cm H2O

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

during inspiration, intrapleural pressure decreases to

A

-8 cm H2O

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

as the lungs increase in size, alveolar pressure

A

decreases

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

near the end of inspiration, alveolar pressure is

A

-1 cm H2O

alveoli increase in size, causes air to enter lungs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is happening in the respiratory cycle mid inspiration?

discuss volume, alveolar pressure, PPL, air flow

A

volume: increasing
alveolar pressure: decreasing
PPL: decreasing

air flowing into lungs

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

what is happening in the respiratory cycle at end of inspiration?

discuss volume, alveolar pressure, PPL, air flow

A

volume: has reached tidal volume
alveolar pressure: zero
PPL: -8 cm H2O
air flow has ceased

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

as lungs increase in size, alveolar pressure

A

decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

pressure needed to keep lungs inflated

A

TPP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

at rest, PTP is

A

5 cm H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

relationship between PTP and PPL in static conditions

A

PTP= -PPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

when given in a problem, FRC means

A

at rest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

decreasing volume during expiration returns PPL to

A

-5 cm H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

during expiration, alveolar pressure increases to

A

+1 cm H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

what is happening in the respiratory cycle mid expiration?

discuss volume, alveolar pressure, PPL, air flow

A

volume: decreasing
PA: rises
PPL: rising
air exits lung

27
Q

what is happening in the respiratory cycle at end of expiration?

discuss volume, alveolar pressure, PPL, air flow

A

volume: return to resting
PA: zero
PPL: -5 cm H2O
air has exited lungs

28
Q

pressure balance at the end of expiration

A

FRC

29
Q

the amount of air inspired or expired in a single breath

A

tidal volume

30
Q

normal resting tidal volume

A

500 mL

31
Q

volume of air breathed above tidal volume

A

inspiratory reserve volume

IRV

32
Q

volume of air that can be forced out in addition to tidal volume

A

expiratory reserve volume

ERV

33
Q

volume of air that cannot be forced out, no matter how hard one tries

A

residual volume

RV

34
Q

amount of air that can be inspired following normal expiration

A

vital capacity (VC)

35
Q

VC equation

A

IRV+TV+ERV

36
Q

amount of air in the lungs following normal exhalation

A

functional reserve capacity

FRC

37
Q

FRC equation

A

ERV + RV

38
Q

maximal volume to which lungs can be expanded with greatest effort

A

total lung capacity

TLC

39
Q

TLC equations

3

A
  • IC+FRC
  • VC+RV
  • ERV+RV+IRV+VT
40
Q

change in volume of lungs for a given change in PTP

A

compliance

41
Q

resistance of respiratory tract to airflow during expiration

A

resistance

42
Q
  • done as rapidly as possible
  • provides and indirect measurement of airway resistance
A

FVC

forced vital capacity

43
Q

volume that can be exhaled in first second of FVC maneuver

A

FEV1

forced expiratory volume

44
Q

normal FEV1/FVC is

A

.7-.8

45
Q

pulmonary compliance equation

A
46
Q

PTP is equal to

A

PA- PPL

47
Q

decreased volume corresponds with […] PTP

A

decreased

48
Q

increased volume corresponds with […] PTP

A

increased

49
Q

at rest, PTP is equal and opposite to

A

PPL

50
Q

compliance is […] at high volumes

A

low

51
Q

compliance is […] at low lung volume

A

high

52
Q

increased compliance:
inspiration is […]
expiration is […]

A

easy
hard

53
Q

decreased compliance:
inspiration is […]
expiration is […]

A

hard
easy

54
Q

resistance is highest in

A

extrapulmonary airways

nose

55
Q

smallest airways have the least amount of resistance because they have a high

A

cross sectional area

56
Q

at FRC when there is no airflow
PPL=
PALV=
PTP=

A

PPL= -5
PALV= 0
PTP= +5

57
Q

during inspiration, PALV

A

decreases to -1

58
Q

in order for the lungs to be inflated, PTP has to be

A

positive

59
Q

the amount of air that remains in the lungs following normal expiration and prevents collapse

A

FRC

60
Q

if a lower PPL is needed to maintain the same lung volume, this represents a […] in compliance

A

decrease

61
Q

strong indicator of airway resistance

A

FEV1/FVC

62
Q

normal resistance in healthy individuals

A

0.7-0.8

63
Q

decreased FEV1/FVC
increased RV

indicates

A

severe airway resistance

CP Test 3 (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions