Welch Allyn Schiller AT-2plus - Definition of Best; Defining Best Recordings

AT-2plus User Guide Spirometry Supplement Page 10
AT-2plus Spirometry Supplement Page 10
Definition of Best
In accordance with the ATS Spirometry Standard (11 November 1994), the best recordings are defined as
the highest value from the calculation:
Best = FVC + FEV1
The measurement table (on the printout and on the display) gives the highest individual measurements
(e.g. FVC, FEV1, SVC, MVV etc.) from the best three recordings as defined above. This is true for all
parameters except the following which are based solely on the highest FVC + FEV1 value:
° FEF
0.2 - 1.2
° FEF
25% - 75%
° FEF
75% - 85%
° FEF
25%
° FEF
50%
° FEF
75%
° FIF
50%
Definition of Best
In accordance with the ATS Spirometry Standard (11 November 1994), the best recordings are defined as
the highest value from the calculation:
Best = FVC + FEV1
The measurement table (on the printout and on the display) gives the highest individual measurements
(e.g. FVC, FEV1, SVC, MVV etc.) from the best three recordings as defined above. This is true for all
parameters except the following which are based solely on the highest FVC + FEV1 value:
° FEF
0.2 - 1.2
° FEF
25% - 75%
° FEF
75% - 85%
° FEF
25%
° FEF
50%
° FEF
75%
° FIF
50%