PFT’s - Spirometry

Question 1

Restrictive Disease Process

Answer 1

Decreased volumes

Question 2

Obstructive Disease Process

Answer 2

Decreased flow rates

Question 3

FVC For Obstructive Diseases

Answer 3

Airways constrict when flow is forced out

Question 4

In Restrictive Diseases…

Answer 4

SVC and FVC will be equal and low

Question 5

Vital Capacity

Answer 5

Volume of air measure from a slow, complete expiration after a maximal inspiration, without forced or rapid effort

Question 6

What Affects Vt?

Answer 6

Age, height, sex, race

Question 7

VC Should Be..

Answer 7

Between 80%-120% of predicted

Question 8

FEV1

Answer 8

Forced expiratory volume in 1 second

Question 9

Decreased FEV1/FVC

Answer 9

Decreased ratio means obstruction

Question 10

FEF25%-75%

Answer 10

Measures airflow through the small and mid airways

Question 11

FEF25%-75% in Obstructive Diseases

Answer 11

Will be low, normal in restrictive

Question 12

Back Extrapolated Volume

Answer 12

Must be below 5% or 150cc

Question 13

Acceptability Criteria

Answer 13

3 acceptable spirograms, 2 largest FVC values within 150mL, 2 largest FEV1 valued within 150mL

Question 14

PEF Reflects

Answer 14

Patient effort

Question 15

Issue in Restrictive Diseases

Answer 15

Volume

Question 16

Issue in Obstructive Diseases

Answer 16

Flow

Question 17

Variable INTRAthoracic Obstruction

Answer 17

Problem with flow on expiration

Question 18

Variable EXTRAthoracic Obstruction

Answer 18

Problem with flow on inspiration

Question 19

Pre and Post Bronchodilator Criteria

Answer 19

12% change and 200mL increase

Question 20

Measure % Change

Answer 20

Post drug - pre drug x 100 / pre drug

Question 21

Sarcoidosis

Answer 21

Restrictive disease

Question 22

Which of the following will result in a decrease in compliance?
I. Edema
II. Emphysema
III. Atelectasis
IV. Pneumonia

Answer 22

I, II, and IV

Question 23

Why should a series of peak flow measurements be reported?

Answer 23

A minimum of 3 values must be reported

Question 24

After a resting expiration, air still remains in the lungs. What is this volume called?

Answer 24

FRC

Question 25

A subject who complains of shortness of breath has an FVC of 2.57 L, but her SVC is 2.99. What do these findings suggest?

Answer 25

Emphysema - Airways collapse