Association of Different Stenting Procedures with Symptomatic Thromboembolic Complications in Stent-Assisted Coiling of Ruptured Wide-Necked Intracranial Aneurysms

OBJECTIVE: This study aimed to evaluate the association of different stenting procedures with the procedure-related complications in stent-assisted coiling (SAC) of ruptured wide-necked aneurysms. METHODS: Consecutive patients undergoing SAC of ruptured wide-necked aneurysms were retrospectively reviewed between December 2011 and June 2016. They received 1 of the 3 stenting procedures during SAC: 1) the coiling microcatheter was jailed outside of the stent and the coil embolization proceeded above the stent; 2) initial stent deployment followed by the coils through the stent's strut technique; or 3) the coil-then-stent technique. The effect of different stenting procedures on clinical complications and outcomes was estimated by logistic regression models. RESULTS: Of the 93 patients enrolled in this study, 11 of them (11.8%) suffered from symptomatic thromboembolic events and 10 of them (10.8%) had hemorrhagic complications. SAC with different stenting procedures (odds ratio [OR] = 4.10, 95% confidence interval [CI]: 1.20-13.97, P = 0.024) was the only independent risk factor for symptomatic thromboembolic events. The coil-then-stent technique had a higher ischemic complications rate than the other 2 stenting procedures (P = 0.023). Serum glucose (OR = 1.48, P = 0.014) and systolic blood pressure on admission (OR = 0.97, P = 0.046) were independent predictors of hemorrhagic complications during SAC. However, different stenting procedures and stent types were correlated with neither aneurysm occlusion at the end of procedure (P = 0.498 and 0.176, respectively) nor favorable outcome at discharge (P = 0.710 and 0.928, respectively). CONCLUSION: Different stenting procedures were associated with thromboembolic but not hemorrhagic complications in SAC of ruptured wide-necked aneurysms.