User's Manual

Arrhythmia
9-11
You can merge a maximum of two classes into a third class. The following
constraints apply to merging classes:
• Two single templates can be merged into a class with one template.
• One class of two (previously merged) templates can be merged with one
additional template.
• If a class has been merged once, then (M1) follows the class number, for
example, ABNORMAL 12 (M1).
• If a class has been merged twice, then (M2) follows the class number, for
example, ABNORMAL 12 (M2).
Merging Trends
There is no limit to the number of trends that you can merge. Merging trends of
arrhythmia data deletes the template for the class that has been merged. If an
arrhythmia event occurs that matches the merged class, a new class will be
created.
If you want to combine the data for two routinely recurring arrhythmia classes,
merge the classes rather than merge the trends. Merging classes permits the two
classes to be stored and trended together on an ongoing basis.
If you want to combine an active arrhythmia class with an inactive class, merge
the trends. An example of an inactive arrhythmia class is the dominant
morphology associated with a previous lead selection.
Merge Constraints
The following additional constraints apply to merging individual classes or trends:
• If the system cannot merge any of the existing classes or trends, the MERGE
key is disabled (the key will appear dotted) in menus for those classes/trends.
• Only classes/trends that the system can merge are presented.
• Single abnormal classes/trends can be merged with each other, or with the
dominant, paced, or AV paced classes/trends.
• Couplets can only be merged with couplets.
• Runs and pauses cannot be merged.