Nellcor OxiMax N-595 Operator's Manual page 21

N-595
Description of Controls, Indicators, and Symbols
pulse rate indicate that the respective limits have been changed from
the power on defaults (Monitor Trend Data on page 53).
The blip display includes a pulse amplitude blip bar, current measured
%SpO and pulse rate, and current upper and lower %SpO
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rate limits. If SatSeconds are enabled, the blip display includes the
SatSeconds indicator and SatSeconds setting. Decimal points after the
%SpO or pulse rate indicate that the respective limits have been
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changed from the power-on defaults.
There are various matrixes within the O
these, are used to assess the severity of conditions presented to the
N-595 in measuring SpO
individual matrices or combinations of these matrices are used to
drive the LED indicators on the N-595 front panel.
The OxiMax algorithm automatically extends the amount of data
required for measuring SpO2 and pulse rate depending on the
measurement conditions. During normal measurement conditions the
averaging time is 6-7 seconds. During challenging measurement
conditions which could be caused by low perfusion, motion, external
interference like ambient light, or a combination of these, the
OXIMAX algorithm automatically extends the amount of data
required beyond 7 seconds. If the resulting dynamic averaging time
exceeds 20 seconds, the pulse search indicator is lit solid and SpO2
and Pulse Rate will continue to be updated every second. As these
conditions become even more challenging, the amount of data
required continues to extend. If the dynamic averaging time reaches
40 seconds, the pulse search indicator begins flashing, the SpO2 and
pulse rate displays flash zeros indicating a loss-of-pulse condition.
M
XI AX
and pulse rate on a patient. These
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and pulse
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algorithm. Some of
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