GE CARESCAPE, User Manual

Page: 185 / 548

ECG
About the reference QRS
TRAM modules save the initial reference QRS after 64 beats have been detected. With
TRAM one reference QRS complex can be stored manually.
PDM and E-modules save the initial reference QRS up to three minutes after the ECG
measurement is started. With PDM or E-modules up to six additional reference QRS
complexes can be stored manually.
Each QRS reference is identified with the date and timestamp.
If a new reference QRS complex is saved and there is no room for another reference
complex, then the oldest manual or automatic reference complex is erased.
Saving a reference QRS manually
This selection is not available with combination monitoring.
You cannot save a reference QRS manually until an initial reference QRS complex has
been saved, or if ST Analysis is disabled.
1. Select the ST parameter window.
2. Select Realtime View .
3. Select Save Reference .
The current QRS becomes the new reference QRS.
Automatic saving of reference QRS complexes
The QRS reference is not saved during an ST alarm condition, only the ST snapshot
is saved.
If a new reference QRS complex is saved and there is no room for another complex,
then the oldest manual or automatic complex is erased. You may want to manually
erase QRS complexes to avoid automated erasing.
A reference QRS complex is saved automatically whenever you do one of the following:
●
Change the Va or Vb lead.
●
Change the ST point manually.
Selecting a saved reference QRS complex for display
This selection is not available with combination monitoring or TRAM.
You can select and display a saved reference QRS for ST analysis.
1. Select the ST parameter window.
2. Select Realtime View .
3. Select a saved reference from the Reference QRS list.
Erasing a reference QRS
This selection is not available with combination monitoring or TRAM.
You cannot erase the initial reference QRS.
1. Select the ST parameter window.
2. Select Realtime View .
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