The heart is a hollow, muscular organ in vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods.
I have had open heart in 2006, mild heart attack in 09, last year went in to ER and they did another stent, same year they stented me in the same spot 2 more times. Since my last stent April 1 2013 I just don't feel the same, stomach always upset I do get angina but my cardiologist said that will happen. I started exercising lost 50 lbs. but still don't feel "good" I been in the ER twice since last stent for having strange feelings and they said IBS. Don't know what to do? I don't feel right all my tests come out good. I am scared.