Medical Technologies EasyOne Pro, Operator'S Manual

Page: 64 / 170

Performing a Test
64 EasyOne Pro™ / EasyOne Pro™ LAB
3.8 FRC Test ( EasyOne Pro™ LAB only)
FRC measurement is based on the nitrogen (N
2
) washout method where N
2
is washed out from the lungs while the patient breathes 100% oxygen. The
test is performed during tidal breathing within the range indicated at
a (Fig.
3-26). After a (configurable) number of breaths, the measurement starts
automatically or it can be started manually with the
Activate button.
Note
Before conducting the FRC test, the valve unit must be
attached to the flow sensor (see Fig. 2-7). Furthermore, a new
FRC barriette™ and, if a new patient is tested, a new spi-
rette™ must be inserted (see "Inserting the One-Way Valve,
DLCO barriette™/FRC barriette™ and spirette™" on page 33).
Before performing the first FRC test, check that the valve unit is
properly attached and that the metal coupling ring of the
motor is tight.
Inform patients that they may experience a feeling of dryness
during inhalation. Also, they will hear oxygen escape during
the washout phase.
There is a manual mode and an automatic mode, see "FRC
(mbw) Tab" on page 110.
The patient wears a nose clip during the measurement and the
lips must seal around the mouthpiece to prevent ambient air
from being inhaled.

Attach the FRC barriette™ (see "FRC Test (EasyOne Pro™ LAB only)" on
page 64).

Select the patient (see "Selecting/Adding a Patient" on page 40).

Select the test with FRC .

The FRC test acquisition screen appears.

Explain the test maneuver to the patient and prepare him or her for the
test:

attach the nose clip

take the spirette™ into the mouth with the lips sealing around the
spirette™ , taking care not to bite down excessively on the spirette™

sit upright

during the test, the patient should breathe quietly and steadily. The
respiratory flow should not exceed the displayed range (
a , Fig. 3-26).
In automatic mode, the test starts automatically after the "Number of
breaths before test start" and ends automatically when the measured con-
centration drops repeatedly below the limit of 2 % (as configured under
"FRC (mbw) Tab" on page 110).