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g. Inhale fully as quickly as possible
e. Return to tidal breathing, i.e. breathe in and out
normally again.
6. If you are prompted to accept the test, press the
Cancel
button to
reject the test or the Enter key to accept the test.
The FVC and FEV1 values recorded for the Closed Circuit Test,
are tabulated. The best FVC and FEV1 values for the current
session and the Lower Limit of Normality (LLN) are also displayed.
7. Repeat to perform another Closed Circuit Test if required.
Note: A maximum of 12 Closed Circuit Tests can be performed in
one session.
8. While performing the test, you can view the flow data in
Volume/Time or Flow/Volume format. To switch between the
different formats:
a. Select the relevant tab
Volume/Time
Flow/Time
b. Press the
Results
tab to view the results for the
individual blows associated with the test session.
Refer to section on
Single Breath Test
for more
information.
c. Press the
Trend
tab to view the trend graph for the
current subject. Refer to section on
Single Breath
Test
for more information.
d. Press the
Info
tab to view the quality information and
the interpretation of the session results.
Refer
to
section on
Single Breath Test
for more information.
9. After performing the Closed Circuit tests, you can do one of four
things:
a. Return to the Home screen by pressing the
Home
button. This will end the test session.