This patient support community is for discussions relating to angina, angioplasty, arrhythmia, bypass surgery, cardiomyopathy, coronary artery disease, defibrillator, heart attack, heart disease, high blood pressure, mitral valve, pacemaker, PAD, stenosis, and stress tests.
I don't think that a cath will indicate a MI (or not). Near as I can recall, a cath deals strictly with arteries and will show blockages there, but does not get into circulation in the heart itself. I think that would be the domain of a nuclear stress echo or some such test.
Not to worry too much about the procedure itself. The risk is pretty small of anything going wrong. Just enjoy the wonderful drugs they give you. They won't put you to sleep, but they sure do take off the rough edges.