A66 THE MANY FACES OF ASTHMA IN CHILDHOOD: Systematic Bias In Respiratory Impedance Measured By Commercial Equipment Calibrated Using A Low Impedance

[...]we have measured Zrs using a more accurate non-commercial wave-tube assembly and noticed differences between Zrs measured with the wave-tube and i2M devices and respiratory resistance (Rrs) and reactance (Xrs) calculated. The i2M was calibrated according to manufacturer's instructions as o...

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Bibliographic Details
Published in:American journal of respiratory and critical care medicine 2017-01, Vol.195
Main Authors: Sly, P D, Shackleton, C, Czovek, D, Hantos, Z
Format: Article
Language:English
Subjects:
Asthma
Bias
Online Access:Get full text
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Summary:[...]we have measured Zrs using a more accurate non-commercial wave-tube assembly and noticed differences between Zrs measured with the wave-tube and i2M devices and respiratory resistance (Rrs) and reactance (Xrs) calculated. The i2M was calibrated according to manufacturer's instructions as outlined above and the wave-tube calibrated using a technique in which the FMA impedance was considered as an impedance in series and removed accordingly.
ISSN:1073-449X
1535-4970