Checking the hose system for leaks
The hose system is tested for leaks during the device
check but must also be monitored independently of the
device check, e.g. after changing the hose system.
● Touch the »Air tight check« screen key.
During the test, the current leakage flow is continuously
displayed.
A leakage flow of 300 mL/min at a pressure of 60 mbar
is permitted.
After the leak test, the Evita 4 unit determines the
compliance and resistance of the hose system.
The calculated compliance of the hose system is used by
Evita 4 for automatically correcting the volume controlled
ventilation strokes and the measured values of the flow
monitoring system, see page 170.
The calculated resistance of the hose system is used by
Evita 4 to correct the pressure measurement in the
presence of a basic flow (NeoFlow option).
When changing the patient mode or type of humidifier,
the device automatically sets the hose compliance and
resistance to the default values.
By checking the system for leaks, the device determines
the momentary compliance and resistance.
Therefore:
When changing the patient mode, hose system or
type of humidifier:
● Always perform the leak test.
Preparation
Device Check
46
057 37 207
To Next Page
Loading...
