38
Equipment Response Time
Example - SpO
2
Exponential Averaging
SpO
2
decreases 0.75% per second (7.5% over 10 seconds)
Pulse Rate = 75 BPM
Specific to this example:
• The response of the 4-beat average is 1.5 seconds.
SpO
2
Values
Average Latency
Standard/Fast Averaged SpO
2
4 beat exponential 2 beats
Pulse Rate Values Response Latency
Standard/Fast Averaged Pulse Rate 4 beat exponential 2 beats
60
65
70
75
80
85
90
95
100
0.0
8.0
16.0
24.0
32.0
40.0
48.0
56.0
64.0
72.0
80.0
Time in seconds
SpO2
SaO2 Reference 4 Beat Average
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