Lecture 4 Pulmonary Function Testing (missed this lecture)

Question 1

What is FEV?

Answer 1

max volume of air that can be expired in the first second following max inspiration

Question 2

What is FVC?

Answer 2

total volume of air that can be expired following max inspiration

Question 3

FEV over FVC is usually around ___

Answer 3

0.8

Question 4

In obstructive lung disease, FEV1 _______ dramatically. FVC _____ slightly. Thus, what happens to the FEV1/FVC?

Answer 4

decreases, decreases;

decreases below 70%

Question 5

FEV1 is used to follow severity in _____

Answer 5

COPD

Question 6

COPD is ____ + _____

Answer 6

bronchitis + emphysema

Question 7

asthma, COPD, bronchiectasis, bronchiolitis, and _____ airway obstruction are examples of _____ lung disease

Answer 7

upper;

obstructive

Question 8

In restrictive lung disease, there is ____ FEV1 and ______ FVC. What is the FEV1/FVC?

Answer 8

decreased, decreased; normal or greater than 80%

Question 9

In obstructive lung disease, lung volumes are ____ than normal. In restrictive lung disease, lung volumes are ____ than normal

Answer 9

greater; less

Question 10

bronchodilator response is the degree to which ____ improves with inhaled bronchodilator. it documents _____ airflow obstruction.

Answer 10

FEV1; reversible

Question 11

There is a “significant bronchodilator response” if FEV1 increases by ___ % and ____ mL

Answer 11

12, 200

Question 12

On a flow volume loop curve, the ___ axis describes the FVC. Inspiration is negative on the ___ axis, while expiration is positive

Answer 12

x, y

Question 13

diffusing capacity measures the ability of the lungs to transport inhaled gas from the ____ to the _____. What gas is used?

Answer 13

alveoli, pulmonary capillaries; carbon monoxide

Question 14

diffusion capacity depends on 3 things:

Answer 14

alveolar-capillary membrane, Hb concentration, and cardiac output

Question 15

causes of increased diffusion capacity of CO:

____ (or normal), pulmonary ____, ______, or a __ to ___ shunt

Answer 15

asthma, hemorrhage, polycythemia, L to R

Question 16

Of obstructive and restrictive lung disease, which has a decreased residual volume?

Answer 16

restrictive = decreased, obstructive = increased

Question 17

restrictive lung disease is characterized by decreased _____

Answer 17

TLC

Question 18

bronchoprovocation:

useful in diagnosis of ____ in the setting of normal pulm function tests. 2 common agents listed?

Answer 18

asthma; methacholine, histamine

Question 19

bronchoprovocation is diagnostic of asthma if there is a greater than 20% _____ in ____

Answer 19

decrease, FEV1