Spirometry Quiz

1. When a subjects initial inhalation is larger than their exhalation this is always due to a leak or an early end of exhalation.
 
 
2. The ATS/ERS spirometry standards state that the FEV1 should be selected from the test effort with the highest Peak Expiratory Flow.
 
 
3. The ATS/ERS spirometry standards requires that any hesitation in exhalation occurring during the first second of exhalation be automatically corrected by testing software.
 
 
4. If the FVC is underestimated then the FEV1/FVC ratio will be overestimated.
 
 
5. When the FEV1 is underestimated the FEV1/FVC ratio will also be underestimated.
 
 

 

 

 

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PFT Interpretation by Richard Johnston is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License