Physio-Control LIFEPAK 15 - Manual (Page 114)

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LIFEPAK 15 Monitor/Defibrillator Operating Instructions
Vital Sign and ST Segment Trends
Displaying and Printing Trend Graphs
The trend graph for any active vital sign or ST measurement can be displayed in Channel 2 or 3.
The example in Figure 4-18 shows the trend graph in Channel 3. Only two trend graphs can be
displayed at a time, but the device collects trend data on all active vital sign values.
To display trend graphs:
1. Rotate the SPEED DIAL to outline Channel 2 or 3, and then press the SPEED DIAL to select the
channel. The Channel menu appears.
2. Select WAVEFORM , and then select TREND .
3. Select SOURCE , and then select the desired VS or ST.
4. The default setting for SCALE and RANGE is AUTO . When AUTO is used, the monitor automatically
updates the scale so that all values are displayed and all data from Power On to the present time
is visible. If you change scale or range, some data may not be visible because it is off scale or
out of range.
5. Press HOME SCREEN . The graph for the selected VS or ST appears in the channel.
Note: To initiate ST trends, you must obtain a 12-lead ECG. The initial ECG provides the baseline
ST measurement and initiates the ST trends feature.
To print trend graphs:
1. Press OPTIONS . The Options menu appears.
2. Rotate and then press the SPEED DIAL to select PRINT .
3. Select REPORT , and then select TREND SUMMARY .
4. Select PRINT . The Trend Summary Report prints graphs of all actively monitored VS and ST
trends.
VS and ST Monitoring Considerations
For best results, consider the following:
• The ability of the patient to cooperate and be relaxed. Patients who are restless can produce
noisy physiological signals. Noisy signals can result in inaccurately high or low data
measurements.
• The quality of the physiological signal. If the ECG has significant artifact, the HR may have
spurious measurements. Noisy 12-lead ECGs may need to be overridden, and ST measurements
will not be obtained.
• The expected length of time the patient is to be monitored. VS graphs of the patient monitored
for only a short time (for example, 15 minutes) may not provide enough data to identify gradual
changes in patient condition.
• The patient ECG rhythm. Diagnosis of ST associated ischemia is inhibited by certain ECG
findings such as left bundle branch block and ventricular pacing.