PAC's or Paroxysmal Atrial Contractions are a common event. It happens when the electrical stimulus to make the Atria -the upper chambers of the heart - beat , occurs early. They are of no significance. As we age most of us have these and also PVC's. Premature Ventricular Contractions are of more significance if we then have a run of them. By this I mean 6 or more PVC's together. Because if these PVC's continue our heart can go into a lethal arrhythmia.
So please be reassured. PAC's are not harmful and most of us have these.
Tammy

Caregiver/advocate to Husband Kris age 59@ diagnosis
DX Dec '10 SCC BOT T4aN2bM0 HPV+ve.Cisplatin x3 35 IMRT.
PET 6/11 clear.
R) level 2-4 neck dissection 8/1/11 to remove residual node - necrotic with NED
Feb '12 Ca back.. 3/8/12 total glossectomy/laryngectomy/bilat neck dissection/partial pharyngectomy etc. clear margins. All nodes negative for disease. PEG in.
March 2017 - 5 years disease free. Woohoo!