If your arteries are clear, from what I understand, the next most likely reason people have MI's is because of coronary artery spasms, usually caused by endothelial dysfunction. Clotting can also cause problems, and both clotting and endothelial dysfunction can be caused by Covid.

There's only one or two procedures that can rule out MINOCA. The most commonly used one is a provocative angiogram, an angiogram where they inject a substance that causes spasms if you have them, and doesn't if you don't. (There's also a type of MRI where they can do that, but I don't know much about that. ) Many cardiologists say they are too dangerous, but if done by an experienced doctor like the ones at Mayo, they are no more dangerous than a normal angiogram, and they give you an accurate diagnosis and a more appropriate treatment.