54 How to Use the Vivo 65
Vivo 65 users manual
Doc. 006088 En-US U-1b
Vt
e
FiO
2
% in TgV
Total Rate
The Vt
e
displays the Expired Tidal Volume
that the patient exhales during each breath.
This value is only displayed in the monitor-
ing field if the patient circuit type is Dual
limb or Leakage circuit.
When using a leakage patient circuit, the
Expired Tidal Volume is a calculated value.
When using a dual limb patient circuit, the
Tidal Volume is measured in the dual limb
insert.
When the Vivo 65 is used non-invasively the Vt
e
can differ from the
exhaled tidal volume from the patient due to leaks around the mask.
The FiO
2
displays the fraction of inspired
oxygen as measured at the air outlet of the
Vivo 65. An FiO
2
sensor (part no. 006347)
needs to be in place to measure and display
this value (see “Using the Vivo 65 with the
FiO2 Sensor” on page 98)
The % in TgV displays the percentage of
breaths where the actual delivered Tidal Vol-
ume matches with the set Target Volume
(not calculated until 100 breaths are regis-
tered).
The Total Rate displays the actual total
breath rate independent of whether the
breaths are patient- or ventilator-triggered
breaths.