Concepts Of Alarm Response Delay - Masimo SafetyNet Alert Manuel De L'utilisateur

Concepts of Alarm Response Delay

As with any pulse oximeter equipment, the audible and visual alarms are subject to alarm
response delay, which is composed of Alarm Condition Delay and Alarm Signal Generation Delay.
Alarm Condition Delay is the time from the occurrence of the triggering event to when the alarm
system determines the alarm condition exists. While Alarm Signal Generation Delay is the time
from the onset of an alarm condition to the generation of its alarm signal. The graphic below is a
simplified illustration of the concept of alarm response delay and does not reflect actual lengths
of delays.
Reference Definition
1 SaO
2
2 Alarm Limit
3 Displayed SpO
The Alarm Condition Delay is graphically represented as t
delay due to processing and averaging.
The Alarm Signal Generation Delay is graphically represented as t
the delay due to alarm system strategy and communication time.
The overall alarm system delay time is graphically represented as t
For more information about alarm response delay, refer to ISO 80601-2-61.
Reference Definition
4 Alarm Signal Generation
SpO Saturation
2
t Time
2
– t in the figure above to show the
2 1
– t
3
3
67
in the figure above to show
2
– t .
1