Stent-assisted coil embolization for the treatment of ruptured aneurysms at the anterior circulation: Comparison between hydrosoft coils and bare platinum coils

Abstract

Purpose: To evaluate the perioperative safety and mid-term prognosis (≤12 months) of HydroSoft coils in treating ruptured aneurysms at the anterior circulation compared with bare platinum coils. Materials and Methods: Patients with aneurysmal subarachnoid hemorrhages admitted to our hospital between January 2009 and March 2012 were retrospectively analyzed. According to strict inclusion and exclusion criteria, cases were selected and classified into two groups: In group A, HydroSoft coils were used as the primary filling coils (≥40 % of total coil length); in group B, only bare platinum coils were used. Cases in both groups were all treated with stent-assistance. A comparison between the two groups was performed for periprocedural complications as well as immediate and mid-term outcomes. The stents used included Enterprise, Neuroform, and Solitaire. Results: Fifty-six aneurysms were in group A patients, and 68 aneurysms were in group B patients. Compared with group B, group A did not have increased incidence of complications but had greater packing attenuation (44.5 ± 8.8-29.8 ± 9.1 %, t = 2.577, P = 0.014) and increased initial complete occlusion rates (63-44 %, χ 2 = 4.161, P = 0.041). Radiologic follow-up were performed in 46 patients from group A and 51 patients from group B. Complete occlusion rates at follow-up were significantly greater in group A than in group B (89.1-70.6 %, χ 2 = 5.08, P = 0.043); the difference in recanalization rates were statistically insignificant between the groups (6.5-5.9 %, P = 1.000). Conclusion: HydroSoft coils proved safe during the periprocedural period and provided greater initial complete occlusion rates, greater packing density, and better follow-up results compared with bare platinum coils. © 2013 Springer Science+Business Media and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE).