The dominating cause of ACI involves hypertension, cerebral arteriosclerosis, diabetes, or coronary heart disease complicated by atrial fibrillation.

• 前者梗死部位多在基底节、内囊、脑干，后者多在脑叶，其病因主要是高血压、脑动脉硬化症、糖尿病及冠心病伴房颤等。