Stent-assisted coil embolization followed by a stent-within-a-stent technique for ruptured dissecting aneurysms of the intracranial vertebrobasilar artery

Sang Hyun Suh, Byung Moon Kim, Sung Il Park, Dong Ik Kim, Yong Sam Shin, Eui Jong Kim, Eun Chul Chung, Jun Seok Koh, Hyun Cheol Shin, Chun Sik Choi, Yu Sam Won

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Abstract

Object. A ruptured dissecting aneurysm of the vertebrobasilar artery (VBA-DA) is a well-known cause of acute subarachnoid hemorrhage (SAH) with a high rate of early rebleeding. Internal trapping of the parent artery, including the dissected segment, is one of the most reliable techniques to prevent rebleeding. However, for a ruptured VBA-DA not suitable for internal trapping, the optimal treatment method has not been well established. The authors describe their experience in treating ruptured VBA-DAs not amenable to internal trapping of the parent artery with stentassisted coil embolization (SAC) followed by a stent-within-a-stent (SWS) technique. Methods. Eleven patients - 6 men and 5 women with a mean age of 48 years and each with a ruptured VBA-DA not amenable to internal trapping of the parent artery - underwent an SAC-SWS between November 2005 and October 2007. The feasibility and clinical and angiographic outcomes of this combined procedure were retrospectively evaluated. Results. The SAC-SWS was successful without any treatment-related complications in all 11 patients. Immediate posttreatment angiograms revealed complete obliteration of the DA sac in 3 patients, near-complete obliteration in 7, and partial obliteration in 1. One patient died as a direct consequence of the initial SAH. All 10 surviving patients had excellent clinical outcomes (Glasgow Outcome Scale Score 5) without posttreatment rebleeding during a followup period of 8-24 months (mean follow-up 15 months). Angiographic follow-up at 6-12 months after treatment was possible at least once in all surviving patients. Nine VBA-DAs showed complete obliteration; the other aneurysm, which had appeared partially obliterated immediately after treatment, demonstrated progressive obliteration on 2 consecutive follow-up angiography studies. There was no in-stent stenosis or occlusion of the branch or perforating vessels. Conclusions. The SAC-SWS technique seems to be a feasible and effective reconstructive treatment option for a ruptured VBA-DA. The technique may be considered as an alternative therapeutic option in selected patients with ruptured VBA-DAs unsuitable for internal trapping of the parent artery.

Original languageEnglish
Pages (from-to)48-52
Number of pages5
JournalJournal of neurosurgery
Volume111
Issue number1
DOIs
Publication statusPublished - 2009 Jul 1

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All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology

Cite this

Suh, S. H., Kim, B. M., Park, S. I., Kim, D. I., Shin, Y. S., Kim, E. J., Chung, E. C., Koh, J. S., Shin, H. C., Choi, C. S., & Won, Y. S. (2009). Stent-assisted coil embolization followed by a stent-within-a-stent technique for ruptured dissecting aneurysms of the intracranial vertebrobasilar artery. Journal of neurosurgery, 111(1), 48-52. https://doi.org/10.3171/2009.2.JNS081418