YOu can read all about it as the event happened at this link
http://www.professionalmuscle.com/forums/showthread.php?t=37736
Basically what happend is I had a very large blood clot form in my right coronary artery while I was doing squats. Doctors cant say for sure why it formed. When they did my angiogram all of the arteries in my heart were wide open and no plaque buildup was seen anywhere. Once they cleared the clot the doc wanted to put in a stent to be safe but they didnt have one large enough to fit the artery. They think the steriods caused my blood to be hypercoagulable, but there is no way to really prove this hypothesis in my case. It has been clinically shown though that steriods can make your blood clot more easily like this, just noway to really prove that it happend in my case. I think bodybuilders out there are having this happen, but it almost always happens in a deep vein in the body and can then go to the lungs where it lodges. Quite rare to have it happn in a coronary artery I think. My Uncle did just do an autopsy, hes a coroner, on a guy that was 32 years old and died of a clot just like mine. I asked him if the subject was on steroids and all he could say was he didnt look like it. They never tested his body for it.