Comparison of Low-Profiled Visualized Intraluminal Support Stent-Assisted Coiling and Coiling Only for Acutely Ruptured Intracranial Aneurysms: Safety and Efficacy Based on a Propensity Score-Matched Cohort Study

BACKGROUND: Low-profiled visualized intraluminal support (LVIS) is suggested as a promising stent for complex intracranial aneurysms. However, the safety and efficacy of LVIS-assisted coiling of acutely ruptured wide-necked intracranial aneurysms have not been well reported. OBJECTIVE: To evaluate the safety and efficacy of LVIS-assisted coiling of acutely ruptured wide-necked intracranial aneurysms compared with contemporary coiling-only strategy via propensity score matching in a high-volume center. METHODS: A retrospective review of patients with acutely ruptured intracranial aneurysms who underwent LVIS stent placement or coiling only from November 2013 to October 2017 was performed. Perioperative procedure-related complications and clinical and angiographic follow-up outcomes were compared. RESULTS: All baseline characteristics were equivalent between the 2 groups except for neck size. The immediate angiographic results, procedure-related complications, procedure-related mortality, and clinical outcomes between the 2 groups demonstrated no significant differences (P = .087, P = 207, P = .685, and P = .865, respectively). The angiographic follow-up outcomes of the LVIS-assisted coiling group showed a significantly higher complete occlusion rate and lower recurrence rate compared with the coiling-only group (92.3% vs 59.9%, 4.8% vs 26.1%, P < .001). Multivariable analysis showed no significant predictors for the overall perioperative procedure-related complications, hemorrhagic complications, and ischemic complications. CONCLUSION: The LVIS stent is a safe and effective device for stent-assisted coiling of acutely ruptured wide-necked intracranial aneurysms, with comparable procedure-related complication rates, higher complete occlusion rates, and lower recurrence rates at followup compared with coiling only.