MiniSpir Light
User manual
MINISPIR LIGHT User manual
Rev 1.7
page 11 di 13
For correctly carrying out a spirometry test, it is strongly recommended to carefully follow the instructions as described below.
•
Fit the nose clip onto the nose of the subject to ensure that air cannot escape through the nostrils.
•
Hold
MiniSpir Light
in one hand as you would a cell phone. The side with the
ID
label should be in the hand of the user.
•
Insert the mouthpiece well into the mouth beyond the teeth, being carefully to ensure that air cannot escape from the sides of
the mouth.
•
It is suggested to make testing in a standing position and during an expiration lean forward, in order to help the expiratory action
with a compression of the abdomen.
WARNING
Do not touch the USB cable during a test to avoid interfering with the transfer of data to the PC or stopping a test too
soon.
Please note it is indispensable for an accurate spirometry that all air must be expired from lungs. It is important to stress
that the turbine must be changed at the end of each test.
After 6 seconds from the initial forced expiratory
MiniSpir Light
emits a continuous beep. This is useful to the doctor to understand
if the patient has reached the minimum expiry time pursuant to the requirements as set forth by the major international associations
of pneumology.
2.4
Spirometry test interpretation
The interpretation of these indices %, according to the ATS standards, generates a series of messages which correspond to
possible levels of obstruction or restriction plus one level of normal spirometry, as shown in the following table:
•
normal
•
mild
•
moderate
•
moderately severe
•
severe
•
very severe
Through an analysis applied to some of the indices and parameters calculated in the FVC test,
MiniSpir Light
produces a variety
of
quality control comments
useful to understand the reliability of the test made.
This control quality check assigns a letter for the current session as described below:
PRE Test
A = At least two acceptable manoeuvres, with the highest two FEV1 values matching to within 100 mL and the largest two FEV6
values within 100 mL.
B= At least two acceptable manoeuvres, with the FEV1 values matching to within 101 to 150 mL
C= At least two acceptable manoeuvres, with FEV1 values matching to within 151 to 200 mL
D= only one acceptable manoeuvres, or more than one, but the FEV1 values not matching to within 200 mL (with no interpretation).
F= No acceptable manoeuvres (with no interpretation).
POST Test
A = two acceptable (1) FEV1 values matching within 100 mL
B= two acceptable (1) FEV1 values matching within 200 mL
C= two acceptable (1) FEV1 values that do not match within 200 mL
D= only one acceptable (1) FEV1 manoeuvre
F= No acceptable (1) FEV1 manoeuvres
Acceptable manoeuvre means: good start and satisfactory exhalation (duration and flow)
Where several
comments
related to the single test are calculated,
MiniSpir Light
will only show the most important to facilitate
the test interpretation.
ERROR IN Vext and PEF
If the extrapolated volume Vext is greater than 500 mL or greater than 5% of the FVC, or if the PEFT (time to peak flow) is greater
than 200 ms, then the following comment is shown:
REPEAT TEST AND BLOW FASTER FET error
If FET is less than the minimum (6 seconds) the message appears:
EXPIRY TIME INSUFFICENT <6s
FLOW ERROR
If the last flow point of the F/V curve is greater than 200 mL/s, this indicates that the expiration was not complete and thu s the
following comment is shown: