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Chapter 5: Technical Specifications
DATOSPIR MICRO User’s Manual 178
511-A00-MU2 • REV. 2.06
The specifications given below are applicable in each case,
depending on the model available, as indicated in detail in Section
1.3 SPIROMETER MODELS.
5.1 TYPES OF TEST, FUNCTIONS AND
PARAMETERS
FORCED VITAL CAPACITY FVC
Parameters:
• FVC (l) Forced Vital Capacity
• FEV.5 (l) Forced Expirometry Volume in 0.5
seconds
• FEV1 (l) Same in 1 second
• FEV3 (l) Same in 3 seconds
• FEV.5/FVC (%) Ratio
• FEV1/FVC (%) Ratio
• FEV3/FVC (%) Ratio
• FEV1/VC (%) Ratio
• PEF (l/s) Flow Apex
• FEF75%
(*)
(l/s) Maximum Expiratory Flow with
75% of FVC remaining in the lungs
• FEF50%
(*)
(l/s) Same, with 50% of FVC
• FEF75%
(*)
(l/s) Same, with 25% of FVC
• FEF25-75% (l/s) Forced mesoexpiratory flow
• FEF75-85% (l/s) Average flow between 75-85% of FVC
• FET25-75 (s) Time passed between 25-75% of
FVC
• FET100 (s) Forced Expiratory Time
• FEF50/FIF50
(*)
(-) Ratio
• FEV1/FEV.5 (-) Ratio
• FEV1/PEF (-) Ratio