Comparison of short-term and long-term therapeutic effects of different MRRC grades in pa-tients with intracranial aneurysms after endovascular coil embolization
Aim To compare the short-term and long-term efficacy of different modified Raymond Roy grading(MRRC)in patients with intracranial aneurysms after endovascular coil embolization.Methods 248 patients with intracranial aneurysms who underwent endovascular coil embolization were included.They were classified into grade Ⅰ,grade Ⅱ,grade Ⅲa,and grade Ⅲb based on postoperative MRRC grading.The short-term and long-term therapeutic effects of each group were compared.Results There were no significant differences in tumor diameter,tumor neck length,aneurysm location,preoperative Hunt-Hess grade,surgical procedure and surgical duration among all groups(P>0.05).As the MRRC grading increases,the improvement rate of short-term efficacy in each group gradually increases,while the deterioration rate gradually decreases(P<0.05).Relapseoccurredin53of248 patients,and the recurrence rate was21.37%.The recurrence rate of MRRC grade Ⅰ and Ⅱ patients was significantly lower than that of MRRC gradeⅢa andⅢb patients(P<0.05).Conclusion With the improvement of MRRC grading,the short-term effi-cacy of intracranial aneurysm patients gradually improves,and the long-term recurrence rate gradually increases.