Short definitions of acronyms are listed on:
http://www.medhelp.org/health_pages/Heart/Common-Heart-Related-Acronyms/show/2?cid=78
This may not help much, but it will give you the full names, which you can do a search on.
I am not familiar with a monitor that displays this type information, it must be something new.
I'm sure your doctor will discuss the results with you when the test is complete.... it seems you are getting some "events", and this should help your doctor's diagnosis.