Stent-assisted coiling of ruptured wide-necked intracranial aneurysms: A single-center experience of 218 consecutive patients.

BACKGROUND: Stent-assisted coiling (SAC) in the treatment of ruptured intracranial aneurysms (RIAs) remains controversial. AIMS: In this study, we report our experience of SAC of wide-necked RIAs and evaluate the risk factors contributing to periprocedural complications.
MATERIALS AND METHODS: 218 patients underwent SAC for ruptured, wide-necked saccular intracranial aneurysms at our center between 2011 and 2014. Multivariate logistic regression analysis was performed to evaluate the risk factors contributing to the periprocedural complications. Follow-up angiography was available in 178 (84.8%) patients. Clinical outcome was measured using the Glasgow Outcome Scale (GOS) through telephonic interviews.
RESULTS: Periprocedural complications occurred in 33 (15.1%) patients out of which 17 were thromboembolic (7.8%) and the remainder were hemorrhagic complications (n = 16, 7.3%). Multivariate logistic regression analysis showed that a positive history of hypertension (odds ratio [OR] 4.899, 95% confidence interval [CI] 1.266-18.951; P = 0.021), and daughter blebs (OR 12.165, 95% CI 3.247-45.577; P = 0.0001) were the major risk factors for the periprocedural hemorrhagic complications, but not for the thromboembolic complications. Angiographic follow-up (mean, 19.5 ± 11.9 months) showed Raymond scale (RS) 1 in 158 (88.8%) patients and RS2 in 20 (11.2%) patients without any angiographic recurrence. At a mean clinical follow-up of 29.1 ± 16.2 months, 201 out of the 210 surviving patients had a good functional outcome (GOS score of 4 or 5).
CONCLUSIONS: SAC is an effective treatment option for selected ruptured wide-necked aneurysms, especially in patients who do not require external ventricle drainage for acute hydrocephalus. The periprocedural hemorrhagic complications tend to be more common in the hypertensive patients and in those with daughter blebs in the aneurysm sac.