Updating ST Baseline Snippets 7 ECG, Arrhythmia, ST and QT Monitoring
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ST Snippets ST snippets show a one second wave segment for each measured ST lead. The most
recent snippet is drawn in the same color as the ECG wave, usually green, superimposed over the
stored baseline snippet, drawn in a different color. The comparison shows any deviation in the
measurement since the baseline snippet was stored, for example as a result of a procedure carried out on
the patient.
The information is updated once per minute.
If you do not see ST snippets on the Screen, select the Screen name in the Monitor Info Line and select
a Screen configured to show snippets from the pop-up list of available Screens.
ST Baseline Window The ST Baseline Window shows an ST snippet drawn on a grid. The current
ST numeric and the ST numeric stored with the baseline are shown, as well as the difference between
these two numerics.
A “?” in front of the difference numeric indicates that the ST measurement points were adjusted since
the baseline snippet was stored.
The Baseline Window opens with the ST pop-up keys
Update Baseline, Record ST, Change
ST Lead
, Adjust ST Points, ST Map and arrow keys for scrolling through the available leads.
♦ To view the ST Baseline window, select any snippet on the Screen.
Updating ST Baseline Snippets
ST analysis requires valid samples to measure and store a snippet. ST Snippets and ST values are
updated every minute. If there is artifact in the signal, it may take longer for an ST snippet and an ST
value to appear.
1 ST label and numeric
2 Baseline ST numeric and difference since baseline was stored
3 1mV calibration bar
4Current snippet
5ST baseline
6 Timestamp of most recently stored baseline snippet
1
ST Baseline from 14 Feb 03 9:38
6
ST Baseline
3
4
5
2
ST-II
-0.8
1.9
?-2.7
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