Example:
Compressed-gas supply
cylinder: 3 L
Cylinder pressure (at cylinder pres-
sure gauge):
200 bar
Available compressed-gas supply,
200 x 3 = approx. 600 L
Usage period
Switch setting at Oxylog:
Air
Minute volume MV: 10
Usage period
Compressed-gas supply
600 L
= approx. 54 min
(10 + 1)
Switching to
reduces the gas
consumption by
e. the usage
period is increased to roughly 100 min.
Testing safety valve
With the same device settings and with
the patient connection
sealed
at the
non-rebreathing valve the max. airway
pressure should be between 50 and 80
mbar.
Testing compressed-gas supply and
minute volume
Insert catheter adapter, size 5 (M 25569)
into patient connection of
ing valve.
Read off the max. inspiration pressure
at the airway pressure gauge for the MV
settings: 7,
M V 7
Airway pressure 4 to 8 mbar
MV 15
Airway pressure 15 to 24 mbar
MV 20
Airway pressure 28 to 38 mbar
The Oxylog should switch at regular
intervals from inspiration to expiration.
The operating prerequisites (at least 2
bar at 60
at Oxylog) are checked
indirectly in the MV = 20
setting.
Following device upkeep and assembly,
the Oxylog is to subjected to the
Remove catheter adapter from patient
following functional checks:
connection; the device is now ready for
operation.
Testing ventilation ratio
Device settings
Pneum. main switch
M V
3
Ventilation ratio
15
Switch
Seal non-rebreathing valve at patient
connection and using stopwatch take
the time t for 10 complete cycles and
determine ventilation frequency f
f =
The ventilation ratio of the Cxylog
should be between 13 and 17
The airway pressure gauge must be
observed all the time so that incorrect
ventilation can be detected in due time,
thus precluding risks for the patient!
Set ventilation ratio and minute volume
(MV) to suit patient concerned.
For rapid presetting:
The ventilation ratio and minute volume
(MV) scales each have three colour
bands for the specific patient groups
infants, children
and
adults.