In 2004 was walking around with a 99% clog in my LAD cardiac artery(the widow-maker) with a blood clot hanging onto the clog. I was actually walking around with lt, but feeling awful, but had no pain, just extremely short of breath. I did not have a heart attack because there was no elevation of certain enzymes that are present in a heart attack. My cardiologist told me that the blood cells were literally lining up to get through the clog. I definitely cheated death that time.

I had a similar one in 2018 on the right artery. Again with no pain.The thing (there's that word again)that kept me alive was that the heart grew new blood vessels around the clog. That is called angiogenesis, but it did not produce enough blood supply to the heart. I had a hard time convincing a hospital ER that it was my heart and they should perform an angiogram. It was again 99% clogged. We had to go to another hospital for the right diagnosis.