The article indicates that the condition is little known and there are few studies. Long-term monitoring may provide more information, but whether that information may be useful or not is, again, not known.
This is very specialized stuff. Have you a background in physiology? Are you or is anyone you know afflicted with this condition?
In any case, I think you want to post here, where docs actually respond:
http://www.medhelp.org/perl6/cardio/wwwboard.html