Midterm outcomes of intracranial aneurysms with bleb formation with densely coiling of the aneurismal neck or entire aneurysm

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To evaluate whether the efficacy and safety of embolization of the aneurysmal neck were better than those of embolization of the entire aneurysm. Previous studies found that embolization of the aneurysmal neck can be used for treating ruptured intracranial aneurysm with bleb formation.In all, 163 patients with ruptured aneurysms with bleb formation who underwent endovascular embolization at the Shanghai Municipal Jing’an District Central Hospital from January 2014 to August 2015 were divided into the embolization of aneurysmal neck group (neck group; 87 cases) and embolization of entire aneurysm group (aneurysm group; 76 cases). A retrospective analysis of clinical data, follow-up Glasgow Outcome Scale (GOS) score, and occurrence of complications was performed. The impacts of different embolisms on the prognosis were compared.The median follow-up time in the neck and aneurysm groups was 17 months (9.62) and 16.5 months (9.54), respectively (P = .799). No differences were found in recurrence, postoperative GOS score, and GOS score at the last follow-up between the 2 groups. The numbers of coils and surgical complications in the neck group were smaller than those in the aneurysm group (P < .001 and P < .030, respectively). After adjusting for age and sex, the embolization method was found to be an independent predictor for surgery-related complications (odds ratio 2.419, 95% confidence interval 1.111–5.269, P = .026).The numbers of coils and surgery-related complications were smaller when embolizing the aneurysmal neck than the entire aneurysm, showing potential advantages of embolization of the aneurysmal neck.

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