Determining The Approximate Pneumatic Duration Of Operation - Dräger Oxylog VE300 Instructions For Use Manual

Getting started
– The accuracy of the indicated battery charge may vary depending on the age
and condition of the battery.
– When other messages need to be displayed in the notification field, the indicated
battery charge will not be visible.
– Additional alarms draw attention to the remaining duration of operation of the
battery.
When an external power source is connected, the battery symbol is joined by a
power plug symbol.
6.2 Determining the approximate pneumatic duration of
operation
The current gas consumption from the high-pressure supply is displayed in L/min
on the device's screen in the field below the oxygen mode. This display is not
visible when a message with higher priority is activated or other messages are
displayed in the notification field.
WARNING
Risk of patient injury
If the oxygen supply is insufficient during operation, the patient may be put at risk.
► Before starting operation, check the cylinder pressure on the pressure gauge of
the pressure reducer so as to rule out the possibility of insufficient oxygen supply
during operation.
► Always have a full replacement oxygen cylinder ready.
Example for oxygen supply:
– Cylinder pressure measured on the pressure gauge of the pressure reducer:
20000 kPa (200 bar)
– Filling volume of the oxygen cylinder: 2.1 L
Oxygen supply: 2.1 L x 20000 kPa = approx. 420 L at ambient pressure
Example or pneumatic duration of operation:
– Ventilation mode: VC-CMV, respiratory rate 12 /min; tidal volume: 0.40 L;
oxygen mode: 100 % O
– Minute volume: 12 /min x 0.40 L = 4.8 L/min
– Displayed average gas consumption of the ventilator: 4.4 L/min
The displayed value may be smaller than the expected minute volume, as it is
not subject to the BTPS correction.
Duration of operation = oxygen supply [L] / displayed average gas consumption
[L/min] = 420 L / 4.4 L/min = 95 min
The pneumatic duration of operation is extended when the device is running in
O /air mix mode, as it then draws in ambient air.
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Instructions for use
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Oxylog VE300 SW 1.n