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21
Masimo
Chapter 4: Operation
The following sections describe how O3
®
Module information is displayed when used with
Root
®
, including display details and user-configurable settings. For additional information on
Root
®
, see Operator’s Manual for Root
®
.
Regional Oxygenation Information
Regional Oxygenation (rSO
2
)
rSO
2
, measured in percentage (0 to 99%), is the regional tissue oxygenation level in the deep
tissue local to the sensor site.
AUC Index (Area under the Curve)
AUC, measured in %
*
minutes, is displayed as an index which quantifies the duration and
depth of patient’s stay below the user-defined rSO
2
low alarm limit (LAL). Duration (minutes)
refers to the amount of time the patient stays below the rSO
2
LAL. Depth (%) refers to the gap
between the patient’s rSO
2
level and the rSO
2
LAL. AUC increases only when rSO
2
level drops
below the selected LAL.
Baseline
This feature is displayed when Set Baseline has been enabled. To enable this option see
Baseline View
on page 26.
Baseline rSO
2
displays the user-defined baseline value for rSO
2
. Baseline is also shown as a
triangular pointer on the y-axis of the trend display for rSO
2
.
Note:
When the sensor is on the patient, the baseline rSO
2
value defaults to the current rSO
2
value. When the sensor is not on the patient, the Baseline rSO
2
value defaults to a minimum
value of 10%.
Delta Baseline (
Δ
base)
This feature is displayed when Set Baseline has been enabled. To enable this option see
Baseline View
on page 26.
Δ
base, measured in percentage, is the relative decrease in rSO
2
with respect to baseline rSO
2
.
Delta SpO
2
(
Δ
SpO
2
)
About
An informational read-only screen appears with the following definition for
Δ
SpO
2
Settings:
Delta SpO
2
(
Δ
SpO
2
), displayed as a percentage, is the calculated difference between rSO
2
and
SpO
2
. Source of SpO
2
is the peripheral SpO
2
(using a pulse oximeter, if available), depending
on user selection.