Covidien INVOS 5100C - Baseline Set and Status; Figure 6-1. INVOS System in Normal Mode with Low Alarm

Operation
6-6 Operator's Manual
Both decreases and increases from baseline may signify dysfunction and developing pathology.
Changes in rSO
2
values of ≥20% from baseline are considered clinically significant and cause for
concern and possible interventions (see Appendix B Clinical Studies).
 Note:
At start up, when selecting new patient or previous patient, the alarms for each channel become active
only after a sensor has been connected. This is to prevent alarm conditions on an inactive channel or
channels.
 Note:
Separate sets of user configuration parameters are stored for two- and four-channel monitoring. Previous
settings for two-channel monitoring will resume when this configuration is selected, and vice versa.
 Note:
A type-matic (repeat) function is active for navigation key menus that are repetitive (for example, Next). It
allows the operator to navigate faster through the options by pressing and holding the Menu key.
Figure6-1.INVOS™ System in Normal Mode with Low Alarm
6.5.1 Baseline Set and Status
An rSO
2
baseline should be set so subsequent rSO
2
changes from baseline can be measured. rSO
2
numbers will turn red if rSO
2
is above or below set alarm thresholds. Baseline status will turn red
indicating a baseline status desaturation ≥20% or ≤40 rSO
2
value (see Figure6-1.).
As soon as rSO
2
trend data begins to be gathered and patient condition is stable, an awake base-
line reading should be obtained (for example, for surgical patients, prior to induction). A baseline