Spirometry and Lung Compliance

Question 1

IRV

Answer 1

Inspiratory Reserve Volume

Question 2

TV

Answer 2

Tidal Volume

Question 3

ERV

Answer 3

Expiratory Reserve Volume

Question 4

RV

Answer 4

Residual Volume

Question 5

TLC

Answer 5

Total Lung Capacity

Question 6

IC

Answer 6

Inspiratory Capacity

Question 7

FRC

Answer 7

Functional Residual Capacity

Question 8

VC

Answer 8

Vital Capacity

Question 9

FEV1

Answer 9

Forced Expiratory Volume in 1 second

Breath in (inspire to IRV) and then Exhale as much as possible!!!

Question 10

Normal FEV1 level

Answer 10

4 L

Question 11

Normal FVC level

Answer 11

5 L

Question 12

Normal FVC Ratio

Answer 12

80%

Question 13

What are common obstructive disorders?

Answer 13

1. Asthma
2. Bronchitis
3. Emphysema
4. COPD
5. Cystic Fibrosis
6. ARDS (surfactant is destroyed by neutrophil aggregation)
7. Obstructive Atelectasis

Question 14

What are common Restrictive Diseases?

Answer 14

1. Pulmonary Fibrosis

2. Pulmonary Edema

Question 15

FEV1 for Obstructive Disease

Answer 15

Very Decreased

Question 16

FVC for Obstructive Disease

Answer 16

Normal or Slightly Decreased

Question 17

FEV1/FVC Ratio for Obstructive Disease

Answer 17

Decreased

Question 18

FEV1 for Restrictive Disease

Answer 18

Decreased

Question 19

FVC for Restrictive Disease

Answer 19

Decreased

Question 20

FEV1/FVC Ratio for Restrictive Disease

Answer 20

Normal or Increased

Question 21

Obstructive Disease is defined by

Answer 21

Expiration being Obstructed

Question 22

Restrictive Disease is defined by

Answer 22

Lung Inflation is being Restricted

Question 23

Compliance is defined as

Answer 23

1. Ability to yield and stretch when under a force –“Distendable”

Question 24

Compliance =

Answer 24

The Change in Ventilation divided by the Change in Pressure

Question 25

What makes Surfactant in the Alveoli?

Answer 25

Type 2 Alveolar Cells

Question 26

Pressures will naturally flow from ______ alveoli into the _____ ones when a pressure gradient exists.

Answer 26

Small to Large

Question 27

Surfactant ‘detergent’ permits small alveoli patency and expansion even when connected to large alveoli.

Answer 27

KNOW THIS

Question 28

Surfactant modifies surface tension to ________.

Answer 28

Prevent collapse of small alveoli when connected to larger alveoli.

Question 29

How does surfactant increase compliance?

Answer 29

Decreasing Surface Tension

Question 30

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

Answer 30

Emphysema

Question 31

Abnormally low compliance (Lung Volume is low and TPPG is higher)

Answer 31

Pulmonary Fibrosis