EDAN iM3 User Manual page 85

Vital Signs Monitor User Manual
Where:
Points = SpO percentage points outside of the limit
2
Seconds = number of seconds that SpO
The alarm response time, assuming a SatSeconds limit set at 50 and a lower alarm limit set at 90,
is described and illustrated below.
In this example, the SpO
period of 2 seconds (2 points × 2 seconds = 4 SatSeconds). The SpO
seconds and then to 84 for 6 seconds. The resulting SatSeconds values are shown below:
After approximately 10.7 seconds, a SatSeconds alarm will be triggered, because the limit of 50
SatSeconds has been exceeded. See arrow (↑) in the following figure.
Saturation levels may fluctuate rather than remaining steady for a period of several seconds.
Often, the patient SpO
range several times. During such fluctuation, the monitor integrates the number of SpO
both positive and negative, until either the SatSeconds limit is reached, or the patient SpO
returns within a normal range and remains there.
remains at that point outside of the limit
2
level drops to 88 (2 points below the limit) and remains there for a
2
SpO
2
2
×
4
×
6
×
Total SatSeconds
Alarm Response with SatSeconds
may fluctuate above and below the alarm limit, re-entering the non-alarm
2
Seconds
2 =
3 =
6 =
=
- 77 -
Monitoring SpO
then drops to 86 for 3
2
SatSeconds
4
12
36
52
2
points,
2
2