St Detection; About The St Analysis; St Detection Measurement Limitations; St Detection Points To Note - GE CARESCAPE ONE User Manual

CARESCAPE ONE User Manual DRAFT 26 October 2017
ECG

ST detection

About the ST analysis

If enabled, ST analysis starts automatically after the ECG leads have been connected
and QRS detection has started. Once the program has completed the learning phase,
ST values are updated every 10 seconds.
ST detection
During the learning period, the algorithm uses the isoelectric reference and the J+
reference points to calculate the ST values. The algorithm automatically searches
for the J and ISO points.

ST detection measurement limitations

ST values may be affected by such factors as some drugs or metabolic and
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conduction disturbances.
Changes in heart rate may affect ST.
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The ST algorithm has been tested for accuracy of the ST segment data. The
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significance of the ST segment changes needs to be determined by a physician.

ST detection points to note

ST segment deviations are not displayed for patients with ventricular pacemakers or
if the rhythm is considered as from ventricular origin.

Starting the ST detection

1. Select the ST parameter window or select the HR parameter window and the ST
tab.
2. Select On from the ST Analysis list.

ST alarm limits

You may set the ST alarm limits for individual leads.
Setting alarm limits for individual leads
1. Select the ST parameter window.
2. Select ST Alarms.
3. Select Alarm On for an ECG lead to adjust its alarm limits.
If the alarm is locked, there is a lock symbol beside the check box and the
selection is not available.
4. Set High and Low alarm limits.
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