Spirometry

Question 1

The maximum volume of gas exhaled forcefully after a maximum inspiration (total exhaled volume)

Answer 1

Forced Vital Capacity (FVC)

Question 2

The volume of gas exhaled in the first second during a FVC maneuver

Answer 2

Forced expiratory volume 1 (FEV1)

Question 3

The percent of gas forced out in 1 second compared to total FVC

Answer 3

FEV1/FVC ratio or FEV1%

Question 4

If the FEV1/FVC ratio is less than 70% (Normal limit) it is what kind of disease

Answer 4

An obstructive disease

Question 5

If the FEV1/FVC ratio is more than 70% (normal limit) it is what kind of disease

Answer 5

Normal or Restrictive

Question 6

If you are having trouble breathing out it is

Answer 6

obstructive

Question 7

If you are having trouble breathing in it is

Answer 7

restrictive

Question 8

The average forced expiratory flow during the middle half of an FVC (Measures average flow through smaller airways)

Answer 8

Forced Expiratory Flow 25-75% (FEF 25-75)

Question 9

What is the normal FEF 25-75

Answer 9

4.7L/sec

Question 10

A low FEF 25-75 means (under 4.7L/sec)

Answer 10

early stage of Obstructive disease

Question 11

A normal FEF 25-75 (4.7L/sec) can mean

Answer 11

Restrictive

Question 12

Average FEF of one liter of gas after first 200ml is exhaled during an FVC (Measures average flow in larger airways)

Answer 12

Forced Expiratory Flow 200-1200 (FEF 200-1200)

Question 13

What is the normal value for Forced Expiratory Flow 200-1200

Answer 13

6-7L/sec

Question 14

A low FEF 200-1200 means

Answer 14

A mechanical problem or severe obstruction

Question 15

Maximum instantaneous flow attained during an FVC maneuver

Answer 15

Peak expiratory flow (PEF)

Question 16

What is the normal value for PEF

Answer 16

10L/sec or 600L/min

Question 17

Maximum instantaneous flow attained during a forceful inspiration (Helpful in distinguishing between obstruction or lack of effort)

Answer 17

Peak Inspiratory Flow (PIF)

Question 18

What is the normal value for PIF

Answer 18

5L/sec or 300L/min

Question 19

If your PIF value is larger than your PEF value you have what kind of disease

Answer 19

Obstructive

Question 20

Total volume of gas a subject can breathe in and out with maximum effort in one minute (Indicates efficiency of total pulmonary system)

Answer 20

Maximum Voluntary Ventilation (MVV)

Question 21

What may be indicated when the FVC is abnormal and airway obstruction is apparent

Answer 21

Slow Vital Capacity (SVC)

Question 22

In the normal lungs The Slow vital capacity = the what?

Answer 22

Forced Vital Capacity (SVC)
FVC=SVC

Question 23

In a restrictive disease the Forced Vital Capacity is what compared to SVC

Answer 23

FVC is lower than SVC for restrictive

Question 24

In an obstructive disease the SVC is what

Answer 24

SVC is slightly higher or potentially normal

Question 25

Preformed with spirometry, provided a waveform with volume on the horizontal axis and flow on the vertical axis

Answer 25

Flow Volume Loop

Question 26

If a patient is mechanically ventilated how should a Flow volume loop be preformed

Answer 26

exhalation and inspiration are reversed

Question 27

Most spirometers can preform what 3 types of breathing tests

Answer 27

FVC
SVC
MVV