What should I do with my PACs?

[alexkt]

I am 53 years old.  Have diabetes for more than 6 years. Hg A1c=6.0. Fasting Glucose=107.  Also had heart stent placed in 2005 and had bypass surgery 8 months ago.  I am doing fine, going on treadmill for 30 minutes without shortness of breath or chest pain. Could four flight of stairs fast and without problem.
I have PAC for more than 2 years now.  Sometimes every 6 beats and sometimes every 2 beats there will be one PAC.  Sometimes it causes cough and sometimes brief dizziness. Never had palpitation.   When I exercise it goes away completely. Two minutes after exercise my heart goes to below 85 from 135. Then PAC appears.  I am taking Atenolol 25 mg but it does not make a difference.
my questions:
1) is this dangerous?
2) should I get treatment or as many says, it is benign?
Thanks

[Occupant]

I don't have PAC's when my heart rate hits ~90 BPM or at least I can't see them. I think it is because the calculated frequency at which they happen matches the BPM at that time. At a lower heart rate they will show up. I am on 50mg  Metoprolol ER and given that I have ~18,000 to 25,000 per day. I have had them up to 38,000 per day. Does this medication make a difference? I don't know - I think I will make another test without medication to check it out before I get to see the cardiologist again at the end of the year.