Fluke Biomedical VT Plus HF - Manual (Page 58)

VT Plus HF
Operators Manual
3-8
Breath Detection Icons
The breath-detection icon is located on the right side of the title bar. Various icons and
their meanings are listed in Table 3-3.
Table 3-3. Breath Detection Icons
Icon Meaning
O A large number 0 to the right of the title bar indicates that automatic sensor-
zeroing mode has been selected.
Q Bi-directional breath detection: Use this breath-detection mode when
analyzing both inspired and expired breath data or when the Analyzer is
connected between the load (lung simulator) and the Y-piece in the breathing
circuit.
P Unidirectional expired only: Use this breath-detection mode when the
Analyzer is analyzing only expired breaths or when the Analyzer is connected
in the expired limb of the ventilator breathing circuit.
N Unidirectional inspired only: Use this breath-detection mode when the
Analyzer is analyzing only inspired breaths or when the Analyzer is connected
in the inspired limb of the ventilator breathing circuit.
W ATP: This indicates the conversion of gas flow and volume to ambient
temperature and pressure.
R BTPS: This indicates the conversion of gas flow and volume to body
temperature of 37 °C with 100 % relative humidity.
S STPD0,: This indicates the conversion of gas flow and volume to a standard
temperature of 0 °C and a standard barometric pressure of 760 mmHg.
T STPD21: This indicates the conversion of gas flow and volume to a standard
temperature of 21 °C and a standard barometric pressure of 760 mmHg.
U Inspiratory Tidal Volumes: This indicates that the reported tidal volumes are
measured over the inspiratory phase of the breath. This only applies to the
bidirectional breath-detect mode.
V Expiratory Tidal Volumes: This indicates that the reported tidal volumes are
measured over the expiratory phase of the breath. This only applies to the
bidirectional breath-detect mode.
L Light (Soft) Filtering: This indicates that the filtering option is turned on and
the filter is set to light or soft filtering. In this mode, all of the signals (flow and
pressure) have a Digital Signal Processing (DSP) low-pass filter applied. This
is used when measuring very noisy signals. None of the ventilator parameters
are valid when the filtering is turned on.
M Medium Filtering: This indicates that the filtering option is turned on and the
filter is set to medium filtering. In this mode, all of the signals (flow and
pressure) have a Digital Signal Processing (DSP) low-pass filter applied. This
is used when measuring very noisy signals. None of the ventilator parameters
are valid when the filtering is turned on.
K Hard Filtering: This indicates that the filtering option is turned on and the filter
is set to hard filtering. In this mode, all of the signals (flow and pressure) have
a Digital Signal Processing (DSP) low-pass filter applied. This is used when
measuring very noisy signals. None of the ventilator parameters are valid
when the filtering is turned on.