User's Manual
Multigas
22-15
Setting Alarm Limits
You may set alarm limits for the following:
• Apnea (delay is measured in seconds) - high limit
• RR (respiratory rate) - high and low limits
•EtCO
2
- high and low limits
•I CO
2
- high limit
•FiO
2
- high and low limits
•FeO
2
- high and low limits
• Inspired and Expired N
2
O - high and low limits
• Inspired and Expired Agent - high and low limits
When alarm limits for EtCO
2
and RR are initially enabled, the limit values depend
upon the patient’s current readings for those parameters (these limit values are
learned). Alarm limits for all other monitored parameters, when enabled, always
have the same fixed values.
Factory-set default values appear for alarm limits when you initially power up the
multigas unit. You may modify limits for any of the monitored parameters. These
modifications will remain in check until the unit is turned off or placed on Standby.
Default settings and ranges for alarm limits are shown in Table 2 on page 22-16.
Refer to Alarms on page 2-3 for additional information on alarms.
The VIEW ALARMS display format is the default for all full screen remote and
central monitors. In this format, all text is cleared from the waveform zone and ten
sets of parameter labels and their alarm limits are displayed. This is the only mode
that displays all alarm limits.
Table 1: Alarm Status and Display
Alarm Status Bell Display
At least one alarm ON Present
At least one alarm ON and
violated
Flashing
All alarms OFF Replaced with GAS ALM OFF in reverse video
At least one alarm ON;
alarms temporarily
suspended by monitor
Replaced with GAS ALM SUSP in reverse video
(flashes if any alarm is violated)
To set gas alarm limits:
1 Touch GAS.
2 Touch ALARM LIMITS.
3 Select the parameter for which
you wish to set alarm limits.
4 Touch ON for the parameter
selected in step 3.
5 Use the arrow keys to set the
high and low alarm limit or the
apnea alarm delay time.
6 Touch PREVIOUS MENU to
select another parameter for
setting alarm limits.
7 Repeat steps 3 through 6 until
all limits are set.