Using the Z Vent Ventilator
4-20
www.zoll.com
9650-002360-01 Rev. A
FIO
2
Parameter Window Options
The FIO
2
(Fraction of Inspired Oxygen) parameter window manages oxygen delivery. Pressing
the FIO
2
parameter button highlights the current FIO
2
value so that you can adjust it using the
Dial
. The default value at start up is 21% whether oxygen is present or not.
If an FIO
2
value greater than 21% is saved as a custom default or the last setting, the ventilator
begins with that saved FIO
2
value if high-pressure oxygen is present. If high-pressure oxygen is
not present, the ventilator begins operation with FIO
2
= 21% and the O
2
SUPPLY PRESSURE
LOW alarm is not activated to prevent a nuisance alarm.
The secondary display in the parameter window is O
2
Use
1
. This value indicates the flow of
high pressure oxygen (l/min) consumed with the current FIO
2
setting to support the patient
(from 0 to 99.9 liters/minute). This value can be used to calculate the time of useful O
2
flow
from an O
2
cylinder: Flow time (min) = cylinder volume (l) /O
2
flow (l/min). O
2
Reservoir use
is indicated on the display with a plus “+” sign next to the FIO
2
value. See Chapter 3 for more
information.
Note:
The “O
2
Use” parameter does not calculate low flow oxygen only high pressure
oxygen use is calculated.
Secondary Parameters and Alarm Thresholds/Limits
There are no secondary parameters for the FIO
2
parameter window.
Context Menu
Access the FIO
2
context menu to turn the O
2
Reservoir ON or OFF.
Note:
The O
2
reservoir feature ON can be used for following:
•
When using the O
2
Reservoir for low flow oxygen
•
In a high vibration environment
•
When using biological or chemical filters.
When the O
2
reservoir feature is on 21+ displays in the FIO
2
parameter window indicating that
O
2
is coming from a low-pressure external source. In addition, it also disables the Gas Intake
Restricted alarm (3031) that can trigger due to the small resistance caused by the reservoir. This
feature is used to eliminate nuisance alarms caused by the restriction of the external filter or
extremely high vibration. To turn the O
2
Reservoir feature ON or OFF from the FIO
2
context
menu, follow these steps:
1. Press and hold the FIO
2
parameter button until the FIO
2
context menu displays.
2.
Release the FIO
2
parameter button, then turn the
Dial
until O
2
Reservoir highlights, then
press the
Accept
button. The current setting for the O
2
Reservoir parameter highlights.
3.
Turn the
Dial
to change the setting to ON or OFF.
4.
Press the
Accept
button.
1. O
2
Use = ((FIO
2
-0.21)/0.79)*Minute Volume where FIO
2
is represented as a fraction and minute
volume is the actual minute volume (controlled and spontaneous breaths * tidal volume).
