Stent-Assisted Embolization for Acutely Ruptured Aneurysm

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  • Ezura Masayuki
    Department of Neurosurgery, NHO Sendai Medical Center, Sendai, Miyagi, Japan
  • Sakata Hiroyuki
    Department of Neurosurgery, NHO Sendai Medical Center, Sendai, Miyagi, Japan
  • Ishida Tomohisa
    Department of Neurosurgery, NHO Sendai Medical Center, Sendai, Miyagi, Japan
  • Inoue Takashi
    Department of Neurosurgery, NHO Sendai Medical Center, Sendai, Miyagi, Japan
  • Uenohara Hiroshi
    Department of Neurosurgery, NHO Sendai Medical Center, Sendai, Miyagi, Japan

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Abstract

<p>Objective: The purpose of this study was to report the results of stent-assisted embolization performed at our hospital for acutely ruptured aneurysms.</p><p>Methods: This study consisted of 19 patients (4 men and 15 women) with acutely ruptured wide neck aneurysm who underwent stent-assisted coil embolization in acute stage between December 2016 and October 2020. Stent-assisted embolization in the acute stage was performed for very wide neck ruptured aneurysm only when balloon-assisted embolization was failed or was thought to be impossible. Factors related to poor clinical outcome were examined.</p><p>Results: There were nine internal carotid artery (ICA) aneurysms, four anterior communicating artery (AcomA) aneurysms, three basilar artery (BA) aneurysms, two vertebral artery (VA) aneurysms and one anterior cerebral artery (ACA) aneurysm. The stents used were one Neuroform EZ and 18 Neuroform Atlas (Stryker). The contrast of the bleb disappeared in all cases with obvious bleb. Complete obliteration was achieved in two cases, neck remnant was in ten, and body filling was in seven. Both of the complete obliteration cases developed thrombotic complications. Modified Rankin score of 0–2 was observed in eight patients (good clinical outcome), whereas that of 4–6 was observed in 11 patients (poor clinical outcome). Several factors possibly affected to poor clinical outcome were examined and only age over 80 years was statically different. Complications related to procedure occurred in five patients; two cases of in-stent thrombosis, one case each of MCA perforation, stent occlusion, and coil fracture.</p><p>Conclusion: Stent-assisted coil embolization using Neuroform EZ and Neuroform Atlas could be considered as an emergency treatment for acutely ruptured cerebral aneurysms with very wide neck. It is rarely indicated in patients with age over 80 years.</p>

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