Viewing ST Maps 7ECG, Arrhythmia, ST and QT Monitoring
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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 unplugged), the area formed by the remaining ST leads is left open.
If there is insufficient information (for example, there are less than three chest leads) for a second ST map to
be displayed, the currently available ST values are displayed in place of the second ST map.
ST label and polarity
of corresponding lead
ST map
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ST Map (Current)
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ST-II HIGH
Adult
SBed10
Limb Leads
Chest Leads
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Values
ST-I
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ST-aVR
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Limb Leads