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5. The bottom (Yellow/Red) boundary can now be set. This is done by pressing the or
button and releasing when the value is reached. Press
to set the bottom(Yellow/Red)
boundary value.
6. Only 2 boundaries are required for the 3 zone system, so the next value should be selected
as 0% (default). Press
. The device will return to the test screen.
To set the boundary percentage values for 4 zones, follow these steps:
1. First, set the top and bottom boundaries – see above procedure (steps 1 - 6).
2. The middle (Yellow/Orange) boundary can now be set. This is done by pressing the button
and releasing when the middle boundary value is reached.
The values will increase/decrease in values of 1% after an initial jump to the lower boundary
value. If the button is kept depressed, the values will scroll faster. This boundary value
cannot be set at a value that is greater than the top boundary value or less than the bottom
boundary value.
3. Press
to set the middle (Yellow/Orange) boundary value. The device will return to the test
screen.
4.3. Performing the Test
1. Sit down when blowing into the device (unless the physician advises otherwise).
2. Turn the device on, . with the mouthpiece inserted. (Use a disposable SafeTway
mouthpiece in clinic.)
3. When the device is ready for a test ( ), holding the head high, breathe in as deeply as
possible, hold the Vitalograph lung monitor ready in front of the mouth.
4. Holding the breath, place the mouthpiece into the mouth, biting the mouthpiece lightly, and
with the lips firmly sealed around it.
5. Blow out as HARD, as FAST and as LONG as possible (the device will stop taking readings
after 6 seconds). Be careful not to block the mouthpiece with the tongue or teeth. A ‘spitting’
action will give false readings.
6. Following each blow and at the end of the test session, the FEV1 value will be displayed and
below that, FEV1 % Personal Best results for that blow.
7. Pressing the button will show the FEV6 result.
8. Pressing the button again will show the FEV1/FEV6 result.
9. Pressing the button again will show the FEF25-75 result.
10. With the blow icon showing, blow again ( ). Usually 3 blows are required.
11. To view the best test in the session (best FEV1 and best FEV6), press the
button. This is
the value that is recorded for the session in the device history.
Note:
if an exclamation mark ! appears, this means it was not a good quality blow and the subject
should blow again. ! appears when: The Vext (extrapolated volume) is > 5% or 150mL of FEV6 or
a cough is detected in the 1st second.
