1后循环脑梗死的临床后循环系统主要的供血动脉是由双侧的椎动脉汇合组成的基底动脉及其分支供血。基底动脉及其分支缺血引起的梗死,其病变常局限于脑桥,也可同时引起脑干、小脑或枕叶的多处梗死。此病多由于基底动脉粥样硬化、血栓形成所致,常在安静或睡眠时发病,可能与在安静 A posterior circulation cerebral infarction clinical circulation system The main feeding artery is composed of bilateral vertebral artery junction composed of basilar artery and its branches of blood supply. Basilar artery and its branches caused by ischemic infarction, the disease is often confined to the pons, can also cause multiple brain stem, cerebellum or occipital infarction. More due to the disease due to basilar atherosclerosis, thrombosis, often in the quiet or sleep onset, may be in the quiet