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.
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.....