C-6 624074/07
CASV
®
(Adaptive Support Ventilation)
ASV requires you to set these basic parameters:
HAMILTON MEDICAL suggests you complete these steps
before connecting the patient to the ventilator:
1. Remove the demonstration lung (when a demonstration
lung is used) and silence the alarm.
2. Set the high Pressure alarm limit to an appropriate value
(example 45 cmH
2
O or 50 cmH
2
O for COPD patients). The
maximum inspiratory pressure delivered in ASV (Pasv) will
be 10 cmH2O below the preset high pressure limit,
indicated by a blue band on the pressure curve display.
The maximal inspiratory pressure for ASV can be also set
using the Pasv control in the
Controls
window. Changing
the Pasv value will also change high Pressure limit.
3. Activate ASV in the
Modes
window and then
Confirm
the
mode change. The
Controls
window automatically
opens.
4. Complete these control settings:
•Patient height
•Gender
•%MinVol. A logical starting point is a %MinVol that will
result in the same minute volume as a previous mode,
when required. The %MinVol for a normal patient
might be 100%; for a COPD patient, 90%; for an ARDS
patient, 120%; and for other patients, 110%. Add 20%
if body temperature > 38.5 °C (101.3 °F) and 5% per
500 m (1640 ft) above sea level.
•Trigger. Recommended settings are: a Flowtrigger of 2 l/
min; or you can leave the previous patient trigger
method and sensitivity, when required.
Pressure High Pressure alarm limit, in cmH
2
O
Patient
height
Patient height, in cm or in.
Gender Sex of patient
%MinVol Desired minute ventilation, in % of normal values
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