Predicted Normal Reference Values

Question 1

What factors affect lung capacity and flow rate?

Answer 1

Age
Height
Gender
Race

Question 2

What is are unaffected by race?

Answer 2

Fev1/FCC ratios

Question 3

What race has similar lung capacities to caucasians?

Answer 3

Aboriginals

Question 4

What does LLN stand for?

Answer 4

Lower limit normal

Question 5

How is LLN defined?

Answer 5

95% of a normal non smoking population will have values above the LLN and only 5% will have values below the LLN

Question 6

Abnormally low fev1/FCC and a low fev1 (below LLN) indicate what type of disease?

Answer 6

Obstructive

Question 7

Emphysema and chronic asthma are what kind of disease

Answer 7

Obstructive

Question 8

An example of fiberoptic lung disease would be?

Answer 8

Abstesosis

Question 9

Abnormally low fvc but fev1/FCC in indication to what kind of disease

Answer 9

Fibrotic

Question 10

Workers exposed to silica or coal mine dust can develop…

Answer 10

Either pattern of abnormality, or a mixed pattern with reductions in both fev1/FCC ration and the FCC below the LLN

Question 11

What are the 4 methods to calculate spirometry reference values?

Answer 11

1. Using a calculator
2. Using a monogram
3. Using a table
4. using an automated spirometry system

Question 12

Normal ranges (%) are what for each value
Fvc
Fev1
Fev1/fvc

Answer 12

Fvc 80% or greater
Fev1 80% or greater
Fev1/Fvc 70% or greater

Question 13

If Fvc is less than 80% it is most likely what kind of impairment?

Answer 13

Restrictive

Question 14

If fev1 is less than 80% or the fev1/FCC is 70% or less than it us most like what kind of impairment?

Answer 14

Obstructive

Question 15

If fev1/FCC is greater than or equal to LLN there is no …

Answer 15

Obstruction

Question 16

If Fvc is greater than or equal to LLN then there is no…

Answer 16

Restriction