There are a couple of issues to address. The first is heart attack. Many people use this term for a variety of illnesses affecting the heart. Some of what you have reported suggests that is the case here. One type of heart attack is that due to a narrowing of an artery that feeds the heart. This is treated with a stent. A stent is usually needed when the heart is a source of discomfort that will not allow normal daily activities. Another problem that is frequently referred to as a heart attack is a change in heart rhythm. Such changes are usually of two types, too slow or too fast. If the problem is too slow, a pacemaker is needed. If the problem is too fast, usually medication but sometimes special studies called EP studies are needed. This may be the source of the unusual numbers. There is not enough information to guide you further but hopefully this will help in discussions with the treating doctor. Is it an artery or heart rhythm problem? If it is rhythm, is it too fast or too slow? Good Luck