What thrombus in the heart can cause a?

A thrombus in the heart, particularly in the left atrium, can lead to the formation of an embolus that may travel to the brain, causing an ischemic stroke. This is often associated with conditions like atrial fibrillation, where stagnant blood flow increases the risk of clot formation. Additionally, a thrombus can also obstruct blood flow within the heart itself, potentially leading to myocardial infarction.