Sorry that you're going through this anxiety. Pericardial effusion is annoying, especially if it just sort of sits there affecting your heart's performance without either going away or getting worse. That's what's been happening with me, though lately the symptoms are a bit less. I sometimes feel that peculiar shifting around feeling in my chest when I abruptly lay down from standing, but nothing like a huge weight--sort of a PVC-like feeling except seldom any actual PVCs. I just notice my heart struggling a bit for a few pulses then the feeling lets up after about 10 seconds or less. In my case my effusion remains "mild" with 1-3 cm of fluid surrounding my heart. The most obvious affect is my right ventricle contracts weirdly in the echo--kind of a front to back sloshing motion rather than an even contraction, as well as making my post-surgical septum wiggle a bit more pronounced.
Since the muscles are thicker and stronger on my left ventricle, this fluid seems to have only modest affect on my ejection fraction--50% rather than the 60% that was originally present when my first echo was taken post surgically. Ventricular motion and shape seemed normal.
Aerobic capacity has increased significantly, though, since my first post on my pericardial effusion a month or so ago. No long distance running (never could do it anyway due to flat feet), but okay with chasing down feral chickens (and feral kids!
http://valvereplacement.com/forums/images/smilies/smile.gif especially my daughter, 4, who is frequently my first morning 'pill' and evening 'pill') and carrying boxes of stuff out to the garage and garbage can (see Post Surgical Clutter posting...). Getting ready for major mowing, too. About 2/3 acre of lawn with a walk-behind mower, including under the fruit trees--lots of ducking. The weight gain during the worst of the effusion symptoms (205 lbs.) has been reversed to 195 lbs., though not to the 190 lbs. I first came home from the hospital with. Perhaps it's just a matter of time.
Haven't tried medication treatment for the effusion--my father takes steroids for his Crohn's Disease and has developed osteoperosis with a broken fibula and maybe some ribs, plus spinal degeneration--and I don't want to go that way. Too many pills already...
Chris