Cosmed Quark CPET, User Manual

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96 - Appendix - Predicted Sets
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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