Flashcards in Spirometry and Lung Compliance Deck (31)
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1
IRV
Inspiratory Reserve Volume
2
TV
Tidal Volume
3
ERV
Expiratory Reserve Volume
4
RV
Residual Volume
5
TLC
Total Lung Capacity
6
IC
Inspiratory Capacity
7
FRC
Functional Residual Capacity
8
VC
Vital Capacity
9
FEV1
Forced Expiratory Volume in 1 second
Breath in (inspire to IRV) and then Exhale as much as possible!!!
10
Normal FEV1 level
4 L
11
Normal FVC level
5 L
12
Normal FVC Ratio
80%
13
What are common obstructive disorders?
1. Asthma
2. Bronchitis
3. Emphysema
4. COPD
5. Cystic Fibrosis
6. ARDS (surfactant is destroyed by neutrophil aggregation)
7. Obstructive Atelectasis
14
What are common Restrictive Diseases?
1. Pulmonary Fibrosis
2. Pulmonary Edema
15
FEV1 for Obstructive Disease
Very Decreased
16
FVC for Obstructive Disease
Normal or Slightly Decreased
17
FEV1/FVC Ratio for Obstructive Disease
Decreased
18
FEV1 for Restrictive Disease
Decreased
19
FVC for Restrictive Disease
Decreased
20
FEV1/FVC Ratio for Restrictive Disease
Normal or Increased
21
Obstructive Disease is defined by
Expiration being Obstructed
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Restrictive Disease is defined by
Lung Inflation is being Restricted
23
Compliance is defined as
1. Ability to yield and stretch when under a force --"Distendable"
24
Compliance =
The Change in Ventilation divided by the Change in Pressure
25
What makes Surfactant in the Alveoli?
Type 2 Alveolar Cells
26
Pressures will naturally flow from ______ alveoli into the _____ ones when a pressure gradient exists.
Small to Large
27
Surfactant ‘detergent’ permits small alveoli patency and expansion even when connected to large alveoli.
KNOW THIS
28
Surfactant modifies surface tension to ________.
Prevent collapse of small alveoli when connected to larger alveoli.
29
How does surfactant increase compliance?
Decreasing Surface Tension
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