Micro Direct MicroLoop Operating Manual page 15

Note: The patient's effort is acceptable when patient made
a maximum effort indicated to the user by the breath rate
being displayed in green (> 65 breaths per minute); and the
maneuver lasted a full 12 seconds indicated by a green line
being displayed. The patient should ideally continue until the
test is automatically terminated at 15 seconds with no
interruption (i.e. did not cough)
The current maneuver will
be displayed in black.
During the maneuver, the
breath rate (BR) will be
displayed in green if the
breath rate is acceptable (>
65 breaths per minute). If
the breath rate falls below
this level, it will be displayed
in red to show the operator
that the patient needs to be
instructed to breathe harder
and faster during the
maneuver. After 12 seconds
of hard, fast and rapid
breathing, the display will
show a green line indicating
12 seconds of the
maneuver have elapsed –
the patient should be
encouraged to continue
until the display changes to
signify the end of the test.
The MVV rate, the %
variation between
maneuvers, the breath rate
and an ATS quality warning
for the maneuver will be
displayed.
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