SpiroSphere
®
ECG Instructions for Use
Page 30/136
Version 02.02 • 04AUG2022
Flow-Volume curve
Volume-Time tracing
Without interruption, the patient should immediately exhale as fast and as much (FEV1) and as
long (FVC) as possible (gure
3
). According to the ATS/ERS guidelines, exhalation should be for
a minimum of 6 sec for adults, and 3 sec for children. The maneuver is usually completed by an
inhalation (gure
4
).
6 s
FEV1/FVC
FVCin
3
4
Screen display:
Tap <Evaluate> to end the rst
effort.
End of Test criteria is displayed
as dynamic icon (time of
exhalation and plateau).
Small tick indicates 6 seconds
reached.
Large tick indicates 6 seconds
reached and plateau.
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