6 ECG, Arrhythmia, ST and QT Monitoring
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To adjust the ST measurement points, in the Setup ST Analysis menu,
1 Select Adjust ST Points to open the Adjust ST Points window.
Alternatively, you can use the
Adjust ST points pop-up key in the ST View window.
2 Select a suitable ECG lead for ST measurement, with a visible J-point and a visible P wave. Use the
up and down arrow keys to scroll through the ST snippets for the other ECG leads.
3 Select the ST point you need to adjust by touching the appropriate point on the screen. The
current choice is highlighted (ISO point -80 in the screen example).
The ISO-point cursor (1) positions the isoelectric point relative to the R-wave peak. The relation is
shown beside the ISO-point in milliseconds. Position the ISO-point in the middle of the flattest
part of the baseline (between the P and Q waves or in front of the P wave).
1 ST label and the ST numeric that would apply using the current points
2 1mV calibration bar
3 Cursors for adjusting ST points
4 Highlighted ST point
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