EasyOne Pro™ / EasyOne Pro™ LAB 149
Appendix
the decision. Note below, that in the both decision nodes, where the
TLCsb > LLN, the diagnosis would be “Obstruction”.
In the case that an uncorrected single breath TLCsb is below the lower
limit of normal there is a risk of incorrectly concluding a “Restriction” or a
“Mixed Defect” (Obstruction AND Restriction) when none is actually pres-
ent. If the FEV1/FVC ratio is < 70%, the regression equation can be used
to correct the TLCsb to a value more consistent with the TLCpleth or TLC-
wash, reducing the possibility of an incorrect decision.
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