Use Instructions

SpiroSphere
®
ECG Instructions for Use
Page 54/136
Version 02.02 • 04AUG2022
Diagram Scaling Adult
Diagram Scaling Child
If “Automatic“ is selected and the breathing ow is greater or less
than the preset ow axis, this axis will be rescaled automatically.
Setting options: Preset:
Automatic Automatic
16 L/s, 12 L/s, 8 L/s , 4 L/s
FVC as FEV2
FVC as FEV3
FVC as FEV6
&KRRVH  3UHVHW
ON, OFF OFF
ON, OFF OFF
ON, OFF OFF
If ““ is selected, the value for the respective parameter is used as the
FVC value.
Expiratory Back
Extrapolation
Inspiratory Back
Extrapolation
Setting options: Preset:
Always, Never Always
correct incorrect
Example: 4.6 liters Example: 3.8 liters
Why Back Extrapolation?
A delayed start of the expiration in the forced expiration breathing
maneuver provides incorrect results for various parameters.
Back extrapolation means that in case of a delayed expiration the
system determines the correct start of expiration.
Criterion 5% of FVC
Start of expiration calculated by
extrapolation
Expiration curve
Time
Volume
Why inspiratory back extrapolation?
In case of a delayed inspiration during the FIV1 breathing maneuver
and if “always“ is preset, the system determines the correct start of
inspiration.