Instrument Specification

Question 1

What requirements should a spirometer have?

Answer 1

Capable of measuring volumes of at least 8 litres (BTPS), independent of flow rate for flows of 0-14 litres per second and capable of accumulating volume for at least 15 seconds

Question 2

Flow accuracy

Answer 2

Flow should be accurate within plus or minus 3% of the reading or plus or minus 50 ml, whichever is greater

Question 3

How many maneuvers can you perform within 10 minutes?

Answer 3

Eight maximum

Question 4

As displays for flow volume and volume time control provide quality control they must :

Answer 4

Meet minimum size and resolution requirements

Have the ability to overlay more than one curve to evaluate repeatability.

Question 5

Flow volume tracking evaluates what?

Answer 5

Clients maximal inhalation effort

Question 6

Volume time tracings evaluate?

Answer 6

The end portion of the maneuver

Question 7

Start of test must be determined by…

Answer 7

The back extrapolation method

Question 8

Start of test should be

Answer 8

Crisp.. no coughs, second inspirations, or other irregularities.

Question 9

FEF25-75% must be measured with an accuracy of at least ..

Answer 9

+/- 5% or +/- 0.200Ls-1 whichever is greater over a range of up to 7 Ls-1

Question 10

FEF25-75% is highly dependent on what valid measurement

Answer 10

FVC and a good level of expiratory effort

Question 11

Spirometers should provide a written tracing of what two volumes for a whole forced expiration

Answer 11

Volume vs time and volume vs flow vs time

Question 12

The spirometer must be capable of displaying the entire FVC maneuver at a constant speed from

Answer 12

Maximum inspiration to at least 15 seconds after the start of the maneuver

Question 13

The paper speed should be…

Answer 13

20 mm per second or faster

Question 14

Volume sensitivity should be…

Answer 14

10 mm per liter of volume

Question 15

Flow sensitivity should be

Answer 15

4 mm per liter per second of flow

Question 16

What does calibration establish?

Answer 16

The relationship between sensor-determined values of flow or volume and the actual flow or volume.

Question 17

Calibration should be done daily before conducting testing to demonstrate what?

Answer 17

That the spirometer is functioning accurately before use.

Question 18

When calibrating what is the acceptable spirometer recorded volume

Answer 18

+/- 3.5% or 2.90 to 3.0 L at three different speeds

Question 19

What are the approximate 3 different speeds for calibrations?

Answer 19

0.5 seconds, 3 seconds, and 6 seconds

Question 20

The air in the calibration syringe should be at the same ___ and ____ as the air inside the spirometer

Answer 20

Temperature and relative humidity

Question 21

What are two types of spirometer?

Answer 21

Volume and flow

Question 22

Volume spirometers record what?

Answer 22

Amount of air exhaled or time within a certain time

Question 23

Flow spirometer measure what?

Answer 23

how fast the air moves in or out as the volume of air inhaled or exhaled increases

Question 24

Instrument volume standard

Answer 24

8 liters in btps

Question 25

Flow rate standard

Answer 25

0 to 14 liters per second

Question 26

Fvc test time standard

Answer 26

At least 15 seconds

Question 27

Fvc volume accuracy standard

Answer 27

Plus or minus 50 ml or within 3% of the reading whichever is greater

Question 28

Temperature and pressure Standard

Answer 28

Conversion to btps either by the instrument or the user

Question 29

Fev1 volume accuracy standard

Answer 29

8 liter btps with accuracy of plus or minus 50 ml or within 3% of the reading whichever is greater

Question 30

Start point of the test standard

Answer 30

0 time Point determined by back extrapolation method this requires activation of the recording chart prior to fvc maneuver

Question 31

Inertia and resistance Standard

Answer 31

Less than 1.5 CM H2O per liter per second at 14 liters per second

Question 32

Fef 25 to 75% volume standard

Answer 32

Accuracy of plus or minus 5 percent of the reading or plus or minus 150 ml per second whichever is greatest

Question 33

Tracing requirements standards

Answer 33

Flow versus volume or volume versus time
Paper speed of 20 mm per second
Volume sensitivity of at least 10 millimeter of paper per liter of volume
Flow sensitivity of at least 4 millimeter per liter per second