'Reversible' obstruction?
Spirometry |
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| index | pre bronchodilator | post bronchodilator | predicted |
| FEV1 | 1.85 L | 2.02 L | 3.62 L |
| FVC | 4.70 L | 4.86 L | 4.77 L |
| FEV1%FVC | 39% | 42% | 75% |
| Your reply | You think that the changes may be due to spontaneous variability, as the change in FEV1 is both <9% of the predicted value and < 200 mL. |
 |
Excellent, absolutely right. |
| If you feel confident you know the various criteria, then proceed to the next question. If you are in doubt whether you master all criteria, do take a peek at the following chapters: | |
- Quantifying bronchodilator responsiveness
- Evaluation of bronchodilator
responsiveness
- Corticosteroids
- Bronchodilator response
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