Collateral Circulation And Ischemic Stroke

Ischemic stroke grows over time.However,previous studies have suggested that the degree of cerebral collateral circulation may delay,or even prevent infarct progression.Good collateral circulation has been associated with better clinical and functional outcomes,an increased recanalization rate,a lower rate of hemorrhagic transformation,and may extend the time window for endovascular procedures.The rationale for these results is the ability of collateral to maintain blood flow beyond the ischemic penumbra before recanalization is achieved,reducing the infarct core and making a good clinical outcome more likely.Recent years,with the development of imaging technology,the collateral circulation can be evaluated more accurately.To evaluate the collateral circulation degree can help to choose the treatment of ischemic stroke,and improve the accuracy of predicting clinical outcome.The formation of collateral circulation is related to many factors,these factors also determine the method and effect of "collateral treatment"."Collateral treatment" has become a new direction for the treatment of ischemic stroke.