Naris
Naris
User’s
Manual V14 14/02/20 Page 18 of 52
PERFORMING A MEASUREMENT
The program has adopted many standard windows conventions and can be controlled by using
the mouse, function keys, or "hot keys
”
. Most are self-explanatory but some features may not
be immediately obvious e.g. how to compare one test against another to get % change figures,
or how to mark a group of files for printout. A software guide has been supplied separately to
aid quick referral.
Most errors in Rhinomanometry can be attributed to:
a)
POOR PATIENT PREPARATION
Patients should be in a stable environment for 15 - 20 minutes and should be asked to blow
their nose or be decongested prior to testing. They should also be advised to breathe at a
normal level and rate.
b)
POOR PATIENT CONNECTION
The pressure tube and mask must not leak and must be placed on the face correctly to avoid
distorting the nose.
Errors arising from a) can be avoided by careful processing of patients prior to testing, and
those arising from b) can be checked by using the batch test facility (Clinical/Research version
only). Essentially, the batch test facility allows rapid retesting of a patient with automatic
comparison of one of the measured parameters and production of mean, standard deviation
and coefficient of variation figures for the test runs repeated for that patient.
The process to be followed is therefore:
•
connect and test patient
•
disconnect patient
•
reconnect and retest patient.
Continue this process until the CV figure drops to an acceptable level.
