FEF25-75 should be incorporated to assess improvement in small airways dysfunction (SAD) for severe asthma patients receiving biologics. Impulse oscillometry (IOS) can be useful as an adjunct, particularly in those with baseline IOS-defined SAD.
|Journal||The Journal of Allergy and Clinical Immunology: In Practice|
|Early online date||2 Feb 2021|
|Publication status||E-pub ahead of print - 2 Feb 2021|
- small airways dysfunction
- severe refractory asthma
- impulse oscillometry