Page 51
10.13 Lung Mechanics and
Measurement Panel
This panel displays the measured and calculated
ventilation parameters. When no flow sensor is
fitted only non flow based values are displayed. The
panels shown display the parameters for each
ventilation mode.
Ti Meas.
The measured inspiratory time, where the breath
may be flow or volume terminated and therefore
shorter than the set inspiratory time. A measured
value with a resolution of 10ms.
Trigger
The number of patient triggered breaths (updated
every 2 seconds). A measured value.
IE Ratio
Inspiratory to Expiratory ratio. A calculated value
derived from the user set inspiratory time against
the time divided by the user set BPM minus the
inspiratory time.
BPM Tot
Total number of breaths detected by the ventilator.
(Mechanical and patient triggered). A measured
value.
Vte (ml)
Expired volume of large and small breaths. A
measured value in millilitres. Value smoothed with a
filter (time constant equal to 3 breaths).
Vmin (l)
Minute volume is the accumulated expiratory tidal
volume over a one-minute period. A measured
value in litres per minute with a resolution of 1ml.
Texp (s)
Total expiration time in seconds. A measured value
with a resolution of 1ml.
Leak (%)
Percentage leak measured around ET tube (when
using an uncuffed tube). The difference between the
expired volume compared to the inspired volume as
a percentage. A calculated value.
Value smoothed with a filter (time constant equal to
10 breaths).
Resist.
Resistance of the patient lung to flow The total
change in the applied pressure to the patient lung
divided by the peak expiratory flow from the lung. A
measured value.
Value smoothed with a filter (time constant equal to
3 breaths).
Compl.
Compliance is the ratio of the change in lung
volume to change in the applied pressures. A
calculated value. Value smoothed with a filter (time
constant equal to 3 breaths).
C20/C
Is the ratio of the compliance during the last 20% of
the respiratory cycle to the total compliance. A
calculated value. Value smoothed with a filter (time
constant equal to 3 breaths).
Note: For CMV the IE ratio is replaced with
measured Ti when TTV
plus
is on.
CPAP
CMV
PTV
PSV
SIMV
SLE4000 & SLE5000
HFO
HFO+CMV
SLE5000 Only
Note: The value in the panel will switch
between the large and small breath Vte
values. See “Change in the display of
measured Vte” on page 12 for more detail.
To Next Page
Loading...
