Performing spirometry
Operator’s Manual V1.1 • EasyOne Air • EasyOne Connect
© ndd Medizintechnik AG • Technoparkstrasse 1, 8005 Zurich, Switzerland • www.ndd.ch 73/144
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7.8 List of quality messages and quality grades
7.8.1 About quality messages and quality grades
End-of-Test criteria, quality criteria, and quality grading are based upon the
published standards [1], [4], [13], [14].
Quality grading is based on the sources [4], [13], [14].
The main articles [2] and [3] do not numerically define the minimum
expiratory peak flow time (PEFT) that is required for an acceptable test. For
EasyOne Air, 160 ms is used.
List of bibliographic references, 132
7.8.2 Quality messages for trials
Immediately after a trial, quality messages help you to give feedback to the
patient as to whether the trial has been acceptable or not. If the trial has not
been acceptable, a recommendation on how to improve is displayed.
Displaying quality messages for trials
To display the quality message for a trial, choose the trial rank from the
parameter table on the result screen (Patients > select patient > History
> select test). The trial ranks are given in numbers 1, 2, 3, etc. and may be
crossed out.
7.8.3 List of quality grades for tests
Quality grades help you as the operator to assess the quality of a completed
test.
Quality grades for the FVC test, the FVL test, and the OSHA test
Rating Criteria
A At least 3 acceptable trials (for age 6 and under: 2 acceptable) AND the difference between the best two FEV
1
and FVC values is equal to or less than 100 mL (80 mL if FVC < 1.0 L) (for age 6 and under: 80 mL or 8% of FVC
or FEV
1
whichever is greater)
B At least 3 acceptable trials (for age 6 and under: 2 acceptable) AND the difference between the best two FEV
1
and FVC values is equal to or less than 150 mL (100 mL if FVC < 1.0 L) (for age 6 and under: 100 mL or 10% of
FVC or FEV
1
whichever is greater)
C At least 2 acceptable trials AND the difference between the best two FEV
1
and FVC values is equal to or less
than 200 mL (150 mL if FVC < 1.0 L) (for age 6 and under: 150 mL or 15% of FVC or FEV
1
whichever is greater)
D (1) At least 2 acceptable trials but the results are not reproducible according to 'C'.
Quality message: Result not reproducible
D (2) Only one acceptable trial
Quality message: Only one acceptable trial
F No acceptable trial available
Quality grades for the FVC test, the FVL test, and the OSHA test
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