Bionet SpiroCare, Руководство по эксплуатации

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SCOMBA-1.1
SpiroCare Operation Manual
Extrapolation
The ‘Extrapolation’ function decides if the extapolated volume is printed in the FVC test.
You are able to select ON/OFF by using the touch or rotary key.
1-second forced vital capacity is calculated at the point of 1 second from the start.
If blowing with a slightly weak force at the initial point and then blowing hard,
spirometry calculates 1-second forced vital capacity at the point 1 second from the
start of weak blowing. However, it should in fact calculate at the point 1 second from
the start of hard blowing. This amount of difference is called extrapolational
difference.
The valid value scope of the extrapolated volume is 0.15L or within 15% of the FVC.