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Comparison of Stent-Assisted Coil Placement and Coiling-Only for the Treatment of Ruptured Intracranial Aneurysms

Yongsheng Liu, Feng Wang, Mingyi Wang, Guogdong Zhang

Department of Interventional Neuroradiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China (mainland)

Med Sci Monit 2017; 23:5697-5704

DOI: 10.12659/MSM.905107

Available online:

Published: 2017-11-30


BACKGROUND: The use of a stent during the acute post-hemorrhage period is controversial. We conducted a retrospective analysis on the clinical and angiographic outcomes of the ruptured aneurysms that were embolized with stent-assisted coiling or coiling-only.
MATERIAL AND METHODS: We reviewed data of 279 patients with 279 ruptured intracranial aneurysms who underwent coil embolization between July 2004 and June 2015. The baseline data on age, sex, medical history, aneurysm size, location, and Hunt and Hess grade were recorded.
RESULTS: One hundred and thirteen aneurysms were treated with stent-assisted coiling. Adverse events occurred in similar proportions of patients in the two groups (11.5% in the stenting group and 9.0% in the coiling alone group). The incidence of permanent disabling neurologic deficit was also similar in the two groups (7.1% and 5.4% in the stenting group and coiling alone group respectively). Clinical follow-up data were available in 207 patients with a median period of 28 months. Angiographic follow-up was available in 106 aneurysms with a median period of 7.5 months. Clinical outcomes were correlated with adverse events (p=0.043, odds ratio=4.59), large aneurysms (p=0.013, odds ratio=10.24), and Hunt and Hess grade (p=0.001, odds ratio=13.51). Stent-assisted coiling for ruptured aneurysm, as compared with coiling-only, was not associated with an increased incidence of poor clinical outcome at follow-up. Aneurysm-occlusion status at follow-up were correlated with stent placement (p<0.001, odds ratio=5.85) and initial aneurysm-occlusion status (p=0.027, odds ratio=3.78).
CONCLUSIONS: Compared with coiling-only, stent-assisted coil placement may have better durability, with comparable safety for ruptured intracranial aneurysm.

Keywords: Embolization, Therapeutic, intracranial aneurysm, Stents



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