ABSTRACT
@#To explore the effectiveness and safety of endovascular recanalization for chronic internal carotid artery occlusion patients under Hasan classification.To evaluate the guiding value of Hasan classification for endovascular recanalization for chronic internal carotid artery occlusion.To investigate the effect of successful endovascular recanalization on systolic blood pressure.Methods We retrospectively reviewed 30 consecutive chronic internal carotid artery occlusion patients.According to Hasan classification and DSA results of our hospital，the study subjects were divided into 4 types：A，B，C and D.After admission，the rate of recanalization，perioperative complication and followup outcomes were collected.Results Among the 30 CICAO patients，83.3% were male and 16.7% were female，with an average age of （58.5±8.6） years.The success rate of endovascular recanalization in 30 patients was 63.3%.According to Hasan classification，the success rate of endovascular recanalization in type A was 81.8%，Type B 75%，Type C 50%，Type D 0%；The perioperative complications was 23.3%，9.1% for type A and 37.5% for type B，Type C 37.5%，Type D 0%，no severe stroke or death occurred during perioperative period.No related complications occurred in all patients during followup.There was statistical significance in systolic blood pressure before and after interventional recanalization in successful group （P<0.01）.There was no significant difference in preoperative and postoperative systolic blood pressure between the unsuccessful group of interventional recanalization （P>0.05）.Conclusion Interventional recanalization for CICAO patients is safe and effective according to Hasan classification criteria.This classification can screen patients suitable for interventional recanalization，predict the success rate of surgery.Successful interventional recanalization may result in a decrease in postoperative systolic blood pressure.