Skip Navigation LinksHome > April 2013 - Volume 72 - Issue 4 > Wingspan Stenting for Intracranial Atherosclerotic Stenosis:...
Neurosurgery:
doi: 10.1227/NEU.0b013e3182846e09
Research-Human-Clinical Studies

Wingspan Stenting for Intracranial Atherosclerotic Stenosis: Clinical Outcomes and Risk Factors for In-Stent Restenosis

Shin, Yong Sam MD*; Kim, Byung Moon MD; Suh, Sang Hyun MD§; Jeon, Pyoung MD; Kim, Dong Joon MD; Kim, Dong Ik MD; Kim, Bum-soo MD; Kim, Keon Ha MD; Heo, Ji Hoe MD#; Nam, Hyo Suk MD#; Kim, Young Dae MD#

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Abstract

BACKGROUND: Intracranial atherosclerotic stenosis (ICAS) is responsible for 9% to 37% of ischemic strokes.

OBJECTIVE: To evaluate the clinical outcome and risk factors for in-stent restenosis (ISR) after treatment of ICAS with a Wingspan stent.

METHODS: Seventy-seven patients with 79 total target ICAS > 60% (mean, 79.9 ± 8.4%; symptomatic ICAS, 96.2%) underwent attempted treatment with Wingspan stenting between March 2010 and March 2011. A retrospective review of the prospectively registered data was conducted to assess the risk factors for ISR and the clinical outcomes of these patients.

RESULTS: The 30-day transient ischemic attack/stroke and death rates were 5.3% (95% confidence interval [CI], 0.1-10.5) and 0%, respectively. All patients but 1 were followed up clinically for a mean of 18.9 months (range, 12-23 months). During the period, cumulative transient ischemic attack/stroke and death rates were 8.1% (95% CI, 1.7-14.5) and 0%, respectively. Only 1 patient suffered a disabling stroke (subarachnoid hemorrhage), which was associated with retreatment of an ISR with a drug-eluting balloon-expandable stent. Follow-up angiography was available in 69 treated vessels (89.6%) at 3 to 24 months (median, 12 months). Binary ISR rate was 24.6%, of which 17.6% (3 of 17 cases) was symptomatic. Rapid balloon inflation (95% CI, 5.490-530.817) and longer length of stenosis (95% CI, 1.093-1.891) were independent risk factors for ISR.

CONCLUSION: Wingspan stenting may be effective for appropriately selected ICAS patients. Rapid balloon inflation and longer lengths of stenosis were independent risk factors for ISR.

ABBREVIATIONS: CI, confidence interval

ICA, internal carotid artery

ICAS, intracranial atherosclerotic stenosis

ISR, in-stent restenosis

PTAS, percutaneous transluminal angioplasty and stenting

SAMMPRIS, Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis Trial

TIA, transient ischemic attack

WASID, Warfarin-Aspirin Symptomatic Intracranial Disease

Copyright © by the Congress of Neurological Surgeons

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