That have fully blocked arteries since the system might have created collateral circulation that bypasses the blockage People getting stroke signs and symptoms could be candidates for treatment with clot-busting medications or thrombolytics, although the treatment should be initiated within just 4.5 hrs from the first onset of those signs https://www.sgvascularctr.com/treating-carotid-artery-disease-an-overview-of-treatment-options-in-singapore/