'Reversible' airway obstruction?
Spirometry |
|||
| 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 do not think the improvement signifies bronchodilatation. |
We’ll let you know in a minute whether the answer is correct or not. Let us first find out about your reasoning. You think there is no bronchodilator effect because:
- Increase in FEV1 <9%
of the initial value.
- The increase in FEV1 <9% of the initial value and <200 mL.
- The increase in FEV1<9%
of the predicted value.
- The increase in FEV1<9%
of the predicted value and <200 mL.
- On second thoughts you
do think there is convincing evidence of a bronchodilator effect.
- You do not know the criteria
for assessing the bronchodilator effect.