Lecture 4 Pulmonary Function Testing (missed this lecture) Flashcards Preview

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Flashcards in Lecture 4 Pulmonary Function Testing (missed this lecture) Deck (19):
1

What is FEV?

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

2

What is FVC?

total volume of air that can be expired following max inspiration

3

FEV over FVC is usually around ___

0.8

4

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

decreases, decreases;

decreases below 70%

5

FEV1 is used to follow severity in _____

COPD

6

COPD is ____ + _____

bronchitis + emphysema

7

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

upper;
obstructive

8

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

decreased, decreased; normal or greater than 80%

9

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

greater; less

10

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

FEV1; reversible

11

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

12, 200

12

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

x, y

13

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

alveoli, pulmonary capillaries; carbon monoxide

14

diffusion capacity depends on 3 things:

alveolar-capillary membrane, Hb concentration, and cardiac output

15

causes of increased diffusion capacity of CO:
____ (or normal), pulmonary ____, ______, or a __ to ___ shunt

asthma, hemorrhage, polycythemia, L to R

16

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

restrictive = decreased, obstructive = increased

17

restrictive lung disease is characterized by decreased _____

TLC

18

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

asthma; methacholine, histamine

19

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

decrease, FEV1