Reading the Trace Display
Figure 22 shows a sample upper Trace Display for a 4-channel monitoring session.
Figure 22:
Trace Display Elements
The traces show the %StO
2
(oxygen saturation) level over time for the channel being monitored,
and each trace is color-coded to match that of its associated channel.
When one or two channels are connected (e.g.,
➀
+
➁
or
➁
+
➂
, the traces are shown in the upper
and lower portion of the display. When three or four channels are connected, the upper portion of
the display shows
➀
and/or
➁
, and the lower portion shows
➂
and/or
➃
.
Changing the Trace Display Mode
You can toggle the display for each channel pair to show the trace display in separate areas or
overlapping each other. For 2-channel monitoring, touch anywhere in the trace area to toggle
between individual and overlay modes (Figure 23).
Figure 23:
2-Channel Display Modes
Date & Time
(page 54)
Reference Value
Indicators (page 42)
Data Collection Active
(page 59)
Patient Mode
(page 22)
StO
2
Averaging
Speed (page 22)
Time reference
(marks move with trace)
StO
2
Level Trace
Event Cursor (page 47)
Trace View/Scale
(page 52)
Patient ID,
if entered
(page 41)
%StO
2
Level
32
CAS Medical Systems, Inc.
Monitoring Essentials: Reading the Oximeter Display
