6 ECG, Arrhythmia, ST and QT Monitoring
ST Alarm status indicator
Label, value and polarity of corresponding lead
The position of the current ST measurement point
If an ST lead is switched off, its axis is not shown in the map.
If a lead is in INOP (the value is being measured but is invalid or unavailable because, for example, the
corresponding ECG electrode is off), the area formed by the remaining ST leads is left open.
If there is insufficient information (for example if no chest leads are measured) for a second ST map to
be displayed, the currently available ST values are displayed in place of the second ST map.