96 - Appendix - Predicted Sets
Quality Control Messages
Reference:
Spirometry in the Lung Health Study: Methods and Quality Control, ARRD 1991; 143:1215-1223.
Message Criterion
Start faster
VEXT >5% of the FVC and >150ml
Blast out harder
PEFT >120 msec
Avoid coughing
50% drop in the flow in first second.
Blow out longer
FET100% <6 sec.
Blow out more air
Flow >0.2l/s within 20 ml of FVC
Blow out harder
dPEF<10%
Take a deeper breath
dFVC<200ml and 5% best FVC
Blow out faster
dFEV1<200ml and 5% FEV1
That was a good test
No errors
FVC reproducible
Diff. 2 max FVC within 0.2 l
FEV1 reproducible
Diff. 2 max FEV1 within 0.2 l
PEF reproducible
Diff. 2 max PEF within 10 %
MVV time too short
MVV time less than 12 sec
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