I'm w. Jerry on this one....could you be more specific as to what the doc wrote down as your diagnosis....are you talking about tachacardia lupus? I can only toss out a guess here.....we want to be here for you but don't know that term.....
I'd try to help, but I haven't a clue on what you mean by "..like taci-lazu".
A slow HR is called bradycardia, you may want to look that up to see if you can match it to your concern.
See for example:
http://www.medhelp.org/posts/Heart-Disease/Bradycardia/show/238733 to see if it has anything of interest to you.