about 30% of the time we don't figure it out if we don't figure it out we read it as if it's atherosclerosis and we assume that there may be some mild atherosclerosis that we couldn't find yeah that we didn't just didn't have sensitive enough tests to pick it up so these patients are typically going to go out on antiplatelet therapy so the least expensive is aspirin clopidogrel which is plavix is also a popular choice if it is a problem with a heart valve atrial fibrillation a heart attack forming a blood clot in the heart then typically