8
as much effort and for as long as possible (minimum 1.5 seconds). If no
inhalation has occurred the alarm will constantly make an audible beep
indicating it is waiting for a test to be performed, when inhalation starts a
longer audible beep will be heard.
The display will show maximum average inspiratory pressure sustained
over a one second period of the test - MIP. If the manoeuvre was less than
1.5 seconds, the unit will beep and a stopwatch with an exclamation mark
will be displayed indicating that the expiration needs to be longer. When 2
seconds exhalation has occurred, an audible noise will be made indicating
the acceptable time period has been met. After each manoeuvre has been
performed pressing the select key
momentarily will allow the operator to
view the Pressure time trace and the additional indices PMax, PAv, MRPD,
and MRR.
Pressing the select key and keeping it held down will change the display
back to the MIP blow icon.
It is recommended to perform three good tests and use the best result as
the maximum achievable MIP, MEP or SNIP. The ATS recommends for
reproducibility that the three tests performed should be within 20% of the
highest MIP pressure obtained. As tests are performed the highest value
acceptable test (over 1.5 seconds) will be displayed along with a cup to
indicate the best test, if subsequent tests are within 20% they will be shown
with a smiley face and if not within the 20% reproducibility a sad face will be
displayed, indicating further testing should be performed.
NOTE:
Once three acceptable tests have been performed a flag will be
shown at the top of the display to indicate the reproducibility criteria has
been met.
The maximum reading the RP
Check can measure is equivalent to
300 cmH
2
O. Any reading above that will be displayed as ---
(overflow).
NOTE:
If the patient does not inhale for the minimum period of 1.5 seconds
the display will show the stopwatch icon
pressing the select key
will
display the test icon so testing can be repeated
Summary of Contents for RP Check
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