Spirometry and Lung Compliance Flashcards Preview

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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

22

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

30

Abnormally high compliance (Lung Volume is high and TPPG is lower)

Emphysema