Hi Kathy,
I too was diagnosed with post pericardiotomy syndrome...also known as "Dressler's Syndrome." I am six weeks post op and still having some minor issues with my lungs: Atelactesis, which is partial lung collapse.....very common after thoracic surgery and best treatment is incentive spirometer and coughing....something I admittedly haven't done enough of; and pleural effusions, which is much better now and I did NOT need a thoracentesis...best treatment for this apparently is non-steroidal anti-inflammatory drugs like Ibuprofen or Naproxen. sounds like Colchine is an anti-inflammatory drug so sounds very appropriate. I also continued taking my pain medication because I found breathing so painful...it made it easier to take deep breaths which is essential.
I also had a small amount of pericardial effusion (fluid around the heart), which resolved on its own, Thank God!
There are a combination of issues that present with post pericardiotomy syndrome, none of which are very fun and I definitely feel for you. Hang in there, it does get better. No matter how much it hurts, try to use your incentive spirometer. I think I prolonged my situation by NOT using the spirometer enough and not coughing...it hurt so much that I just avoided it but maybe if I had done it more I wouldn't be six weeks post-op and still having issues.
If you google "Dressler's Syndrome" you will get a lot more information.
Take care of yourself and hang in there! I'll be praying for you!!