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脑梗塞(CI)常由血栓、栓子或血管痉挛使动脉闭塞而引起。据此,理论上假设脑梗塞区内血流量(CBF)减少,增加CBF应是有效的治疗。然而,血流量测定的结果表明:CBF与中风病情的轻重,或与颅外动脉狭窄程度无相互关联。而且脑梗塞后几天内梗塞区血流量可以是减少、正常甚至增多。这可能因为不同病人,缺血区通过侧枝循环、栓子碎裂及代偿性血管扩张引起的再灌流情况也有所不同。临床上,CI急性期用增加CBF治疗的效果不肯定。其原因可能是:病例选择不当;治疗开始过晚;疗效观察指标欠敏感,不能反映临床上病情的好转;
Cerebral infarction (CI) is often caused by occlusion of arteries by thrombi, emboli or vasospasm. Accordingly, it is theoretically assumed that blood flow in cerebral infarction (CBF) decreased, increased CBF should be an effective treatment. However, the results of the blood flow measurement showed that there was no correlation between CBF and the severity of stroke or the degree of extracranial artery stenosis. And within a few days after infarction infarction blood flow can be reduced, normal or even increased. This may be due to different patients, the ischemic area through the collateral circulation, embolus fragmentation and compensatory vasodilation caused by reperfusion situation is also different. Clinically, CI acute phase with increased CBF treatment is not sure. The reasons may be: inappropriate choice of cases; treatment started too late; curative effect indicators are not sensitive to clinical conditions can not reflect the improvement;