External Flow Source - Dräger Evita 2 dura Instructions For Use Manual

Operation
External flow source
External flow source
When a constant external flow of up to 12 L/min is applied
(e.g. during medicament nebulisation with separate gas supply
and not from Evita 2 dura or during separate tracheal gas
insufflation TGI), this flow can be determined by Evita 2 dura
and the tolerance for the flow sensor monitoring parameters
increased in order to prevent generation of the alarms "Flow
measurement fault" and "Neo. flow measurement fault"
(NeoFlow option) during these applications.
The original measurement of the expiratory volume is
continued: During an expiratory flow, Evita 2 dura measures a
correspondingly higher value for V
The displayed V value is too low. During volume-controlled
Ti
ventilation, the actual tidal volume applied to the patient is
higher than that set. It is therefore advisable to use pressure-
controlled ventilation in combination with an external flow.
To avoid false alarms and ensure adequate monitoring:
●
Adjust both alarm limits for MV in line with the actual value.
●
Use additional monitoring, e.g. SpO
To determine the external flow:
●
Press menu button »Calib./Config.«.
●
Select the menu »External Flow« via the menu button
jj
»Sensor «.
●
Select screen key »Measure« = turn rotary knob,
confirm = press rotary knob.
●
Yellow LED lights up in the »Measure« key.
The external flow is calculated by Evita 2 dura.
Display during calculation:
»Determining external flow«
Once the external flow has been determined, it is displayed by
Evita 2 dura together with the time and date.
The following message is simultaneously displayed by
Evita 2 dura:
»Confirm value via «
●
Confirm = press rotary knob.
Determination of the external flow is aborted by Evita 2 dura if
it exceeds 12 L/min or if flow measurement by Evita 2 dura is
faulty.
When the external flow has been determined successfully, it is
taken into account in the monitoring of the flow sensor:
the yellow LED in the key »extern. Flow« lights up.
The advisory message
»! External flow«
is displayed as long as the external flow is taken into account
by Evita 2 dura.
68
and MV.
Te
, if necessary.
2