Week 6 - Spirometry/PFT

Question 1

Sxs < 2 days/wk and < 2 nights/wk
FEV1 > 80%
PEF variability < 20%

Severity classification?

• Intermittent
• Mild persistent
• Moderate persistent
• Severe persistent

Answer 1

Intermittent

Question 2

Sxs > 2 days/wk but 1x/day and > 2 nights/wk
PEF or FEV1 > 80%
PEF variability 20-30%

Severity classification?

• Intermittent
• Mild persistent
• Moderate persistent
• Severe persistent

Answer 2

Mild persistent

Question 3

Sxs < daily and > 1 night/wk
PEF or FEV1 > 60% - 80%
PEF variability > 30%

Severity classification?

• Intermittent
• Mild persistent
• Moderate persistent
• Severe persistent

Answer 3

Moderate persistent

Question 4

Sxs continual in day and frequent at night
PEF or FEV1 < 60%
PEF variability > 30%

Severity classification?

• Intermittent
• Mild persistent
• Moderate persistent
• Severe persistent

Answer 4

Severe persistent

Question 5

Sxs are:
= 2 days/week
= 1 nighttime awakening/month
= 2 days/week of bronchodilator

How controlled is this asthma?

• Well controlled
• Not well controlled
• Very poorly controlled

Answer 5

Well controlled

Question 6

Sxs are:
> 2 days/week
>/= 2 nighttime awakenings/month
> 2 days/wk of albuterol

How controlled is this asthma?

• Well controlled
• Not well controlled
• Very poorly controlled

Answer 6

Not well controlled

Question 7

Sxs are: Daily sxs and multiple doses of albuterol/day

How controlled is this asthma?

• Well controlled
• Not well controlled
• Very poorly controlled

Answer 7

Very poorly controlled

Question 8

What is FVC?

Answer 8

Forced volume capacity

The volume of air a person can blow out forcefully from max inhalation to max exhalation

Question 9

What is FEV1?

Answer 9

Forced expiratory volume at 1 second

The volume of air a person can force out in the first second of exhalation

Question 10

What is FEF 25-75%?

Answer 10

Forced expiratory flow during middle portion (25th and 75th) of FVC

Question 11

What is inspiratory reserve volume?

Answer 11

Max volume of air inhaled from end inspiratory tidal position

Question 12

What is tidal volume?

Answer 12

Volume of air inhaled and exhaled with each breath during quiet breathing

Question 13

What is expiratory reserve volume?

Answer 13

Max volume of air that can exhaled from resting end-expiratory position

Question 14

What is residual volume?

Answer 14

Volume of air remaining in lungs after max exhalation

Question 15

What is vital capacity?

Answer 15

Max volume of air exhaled from max inspiratory level

Question 16

What is inspiratory capacity?

Answer 16

Max volume of air that can be exhaled from end expiratory tidal position

Question 17

What is functional residual capacity?

Answer 17

Volume of air in lungs at end expiratory tidal position

Question 18

What is total lung capacity?

Answer 18

Sum of all volume compartments or volume of air in lungs after max inspiration

Question 19

What are normal spirometry values?

• FVC
• FEV1
• FEF 25-75%
• FEV1/FVC

Answer 19

FVC > 80%
FEV1 > 80%
FEF 25-75% > 55%
FEV1/FVC > 70-80%

Question 20

What are spirometry values in obstructive lung dz?

• FVC
• FEV1
• FEF 25-75%
• FEV1/FVC

-flow shape

Answer 20

FVC > 80%
FEV1 < 80%
FEF 25-75% < 55%
FEV1/FVC < 70-80%

-caved in, left shift

Question 21

What are spirometry values in restrictive lung dz?

• FVC
• FEV1
• FEF 25-75%
• FEV1/FVC

-flow shape

Answer 21

FVC < 80%
FEV1 < 80%
FEF 25-75% > 55%
FEV1/FVC > 70-80%

-circular (decreased volume), right shift

Question 22

What are 4 examples of obstructive lung dz?

Answer 22

Asthma
CF
COPD
Bronchiectasis

Question 23

What are 4 things that you need to know to perform spirometry?

Answer 23

Height
Gender
Smoker status
Ethnicity

Question 24

How would you differentiate between restrictive and obstructive lung dz w/ PFT?

Answer 24

Obstructive has DEC FEV1/FVC

Restrictive as DEC FVC and INC FEV1/FVC