No. It is an ischemic cerebrovascular disease. However, someone who has one is at much higher risk of having both than someone who has neither.
Not really. Tia or transient ischemic attack is essential a stroke that resolves quickly ... As such it is cerebrovascular disease which is part of the cardiovascular system. Ischemic heart disease implies coronary artery disease -- that the arteries that supply your heart muscle are blocked. Check with your doctor for more information.