Rogers D, Doull I J M
Cystic Fibrosis/Respiratory Unit, Department of Child Health, University Hospital of Wales, Cardiff, UK.
Acta Paediatr. 2002;91(11):1257-9. doi: 10.1080/080352502320777522.
To measure the effect of an in-line microaerosol filter on spirometric values in cystic fibrosis (CF).
Twenty-six subjects with CF undertook a randomized, open, cross-over comparison of spirometry with and without an in-line filter.
The filter had no significant effect on spirometric parameters nor was there any order effect. Measurement error was unrelated to the magnitude of the measurement.
In-line microaerosol filters do not affect spirometric values or variability in children with CF.