Use Instructions
SpiroSphere
®
ECG Instructions for Use
Page 34/136
Version 02.02 • 04AUG2022
Tidal breathing
The two columns displayed show how constantly the patient is
breathing over the last ve breathing cycles.
dVT = variation (coefcient of variation) of the tidal volume
dFRC = variation of the breathing baseline
The lower the variation the more regular the breathing.
As soon as the display changes from "red" to "green",
a stable breathing baseline has been reached.
1
Performance of an "ERV Maneuver":
Tidal breathing should be continued for a longer period of time
(gure
1
). A stable breathing baseline is absolutely required to
determine the lung volumes ERV and IC correctly.
Tapping on the "i"-symbol
will display information
on the measurement
procedure.
Perform a Slow Spirometry Measurement
When the test is started, an automatic zero adjustment of the sensor unit is performed. Hold the
SpiroSphere Sensor still and wait for the zero adjustment to be completed before approaching the
mouthpiece.
As soon as the zero adjustment is completed, the patient should close his/her nose with the
nose-clip, take the mouthpiece between his/her teeth and seal his/her lips tightly around the
mouthpiece. Check the correct position of the mouthpiece! For safety reasons, testing should be
preferably done in the sitting position, using a chair with arms and without wheels.
Make the proper preparations according to ATS/ERS guidance.