11
CAREvent® ALS - User Manual
3.3. Automatic Ventilation
1. If you have been ventilating manually simply release the
manual button and after a short pause (5 - 8 seconds) (17-
23 seconds in the G05 model), the ventilator will commence
automatic cycling at the rate and volume selected. If you
are commencing automatic ventilation immediately, rotate
the setting selector to the setting appropriate for the size of
patient being ventilated and the ventilator will commence
automatic cycling (fig 1).
2. Closely observe the patient’s chest movements. If there is any
leak from around the mask or any obstruction in the patients
airway (blow off valve will operate) reposition patients head
and adjust mask and hand position to ensure a good airway and
mask to face seal.
3. Should repositioning the mask and adjusting hand/neck position
not resolve the situation adjust the automatic selector control
to establish the correct tidal volume. This is accomplished by
moving the control toward the child setting if the blow off valve
operates or towards the adult setting if chest rise is insufficient.
This can be done by simply using your thumb to slide the control
without removing your hand from the mask.
WARNING
Automatic ventilation of the patient who is intubated or whose mask
is held in place with the optional head harness system, does not mean
that the patient is safe to be left unattended and constant observation
of the patient’s pulse and chest movement must be continued.
WARNING
The use of gas pressure regulators that do not maintain a minimum output
pressure and flowrate in line with the requirements of the specification may
cause the device to fail resulting in the patient not being ventilated.
Control Position
1
2
3
4
5
6
Tidal Volume V
t
(ml)
150
200
300
400
500
600
Frequency (BPM
20
20
10
10
10
10
Minute Volume Vm (ltrs)
3.0
4.0
3.0
4.0
5.0
6.0
Automatic Flow Rate (L/min)
9.0
12.0
9.0
12.0
15.0
18.0
Body Weight (kg) min.
21
28
42
57
71
85
Automatic Adjustable Setting Selections (fig 2)
