The occlusion of the artery develops slowly. Atherosclerotic plaque does not necessarily cause stroke. There are many small connections among the various brain arteries. If there is enough collateral circulation, even a totally blocked artery may not cause neurologic deficits. Whatever the source of the embolism, the clot travels through the bloodstream and becomes stuck in a small artery in the brain.
Testing is the same as for stroke.
Serum lipids , especially triglycerides and cholesterol , may be high. Treatment Stroke is an acute , serious condition. Immediate treatment is required. Treatment varies depending on the severity of symptoms. For virtually all strokes, there is a need for hospitalization, possibly including intensive care and life support.