If both rotary knobs are set to a band of
the same colour, the following ventila-
tion values are obtained:
Green band
for infants
(5-20 kg
body weight)
Blue band
for children
(20-40 kg
body weight)
Brown band
for adults
(as of 40 kg
body weight)
V e n t i l a t i o n M V
ratio
28-35
l-3.5
18-28
3.5-7
7-20
The switch is to be set to
Air
or
to
depending on the patient’s
requirements:
High
concentration required:
Air
(and
drive)
In the case of a toxic atmosphere (and
respiratory standstill):
Air
Air
setting:
The drive gas, e. g.
is routed
unblended to the patient. The
ventilation ratio and MV settings
remain unchanged irrespective of
the switch setting.
Low
concentrations required:
(with
drive)
or compressed-air drive
Small gas supply:
setting:
The drive gas
or air) is blended
with ambient air. With
drive and
an MV setting in excess of 7 Llmin
the percent by volume added is
approximately
i. e. the
concentration is roughly 50 vol. %.
With an
MV setting less than 7
the
concentration in-
creases up to 80 vol.
Connect non-rebreathing valve to mask
or tube.
Make sure that airways are completely
free.
Check airway pressure gauge.
In normal circumstances the inspiratory
airway pressure values should be
approximately 20 mbar.
Atypical airway pressures
In the event of an
excessively high
airway pressure reading,
the MV
setting should first be checked as well
als the functioning of the
ing valve.
Ensure that airways are completely
free!
High airway pressure (50-70 mbar) in
conjunction with a buzzing noise (safety
valve in device blowing out) are an
indication of incorrectly positioned
airways or a kinked tube.
If the
airway pressure reading is too
low, the MV setting must likewise be
checked.
The hose connections are also to be
tested for tightness and freedom from
leaks and the non-rebreathing valve is
to be checked for proper functioning.
Ventilation ratio for cardiopulmonary
resuscitation
W ithin the scope of cardiopulmonary
resuscitation of adults employing a ratio
of
it must be ensured that a
ventilatory impulse is given after every
5th cardiac compression.
Given a cardiac massage frequency of
60
this means that ventilation
must be effected with a ratio of
12
To facilitate setting, the ventilation ratio
12
on the Oxylog is provided with
a heart symbol.
12