Mindray A7 Operating Instructions

A7™ Operating Instructions 046-004667-00 6 - 13
Alarms and Messages Alarm Limits
FIGURE 6-11 Load Alarm Defaults button in the Agents window (with AG module
connected)
6.5.3 Auto Alarm Limits
The Auto Alarm Limits function uses an algorithm based on measured values. The relationship is
shown in the TABLE 6-2.
The Auto Alarm Limits button is disabled when the A7 is in Standby mode, Manual mode or
Monitor mode. The Auto Alarm Limits button is also disabled when the current mode is PS, SIMV-
VC, or SIMV-PC.
The parameters in the formula are all measured parameters. The new alarm limits for Paw are
calculated on the basis of average values for PEAK, PLAT, and PEEP. The value used for average uses
the value of the last four ventilation cycles or the value in one minute, whichever is smaller.
Spontaneous breaths by the patient are not taken into account.
If there is not a valid measured minute volume (MV), the corresponding MV alarm limits will not
adjust.
If the average value for PEAK, PLAT, and PEEP cannot be calculated, the corresponding alarm limits
will not adjust.
Load Alarm Defaults button
ALARM LIMIT ADJUST FORMULA
Paw High PEAK+5 or PLAT+10, whichever is greater
minimum 35 cmH
2
O
Paw Low (PLAT-PEEP) x 0.6 + PEEP - 1
minimum 3 cmH
2
O
maximum Paw High - 1
MV High MV x 1.4
minimum 2.0 L/min
MV Low MV x 0.6
minimum 0.3 L/min
maximum MV High - 0.1
TABLE 6-2 Auto Alarm Limits

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English