Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Endovascular Treatment of Vertebral Artery Dissecting Aneurysms That Cause Subarachnoid Hemorrhage : Consideration of Therapeutic Approaches Relevant to the Angioarchitecture

  • Lim, Seung Hoon (Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine) ;
  • Shin, Hee Sup (Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine) ;
  • Lee, Seung Hwan (Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine) ;
  • Koh, Jun Seok (Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine)
  • Received : 2015.04.30
  • Accepted : 2015.07.20
  • Published : 2015.10.28
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Abstract

Objective : Intracranial ruptured vertebral artery dissecting aneurysms (VADAns) are associated with high morbidity and mortality when left untreated due to the high likelihood of rebleeding. The present study aimed to establish an endovascular therapeutic strategy that focuses specifically on the angioarchitecture of ruptured VADAns. Methods : Twenty-three patients with ruptured VADAn received endovascular treatment (EVT) over 7 years. The patient group included 14 women (60.9%) and 9 men (39.1%) between the ages of 39 and 72 years (mean age 54.2 years). Clinical data and radiologic findings were retrospectively analyzed. Results : Four patients had aneurysms on the dominant vertebral artery. Fourteen (61%) aneurysms were located distal to the posterior inferior cerebellar artery (PICA). Six (26%) patients had an extracranial origin of the PICA on the ruptured VA, and 2 patients (9%) had bilateral VADAns. Eighteen patients (78%) were treated with internal coil trapping. Two patients (9%) required an adjunctive bypass procedure. Seven patients (30%) required stent-supported endovascular procedures. Two patients experienced intra-procedural rupture during EVT, one of which was associated with a focal medullary infarction. Two patients (9%) exhibited recanalization of the VADAn during follow-up, which required additional coiling. No recurrent hemorrhage was observed during the follow-up period. Conclusion : EVT of ruptured VADAns based on angioarchitecture is a feasible and effective armamentarium to prevent fatal hemorrhage recurrence with an acceptable low risk of procedural complications. Clinical outcomes depend mainly on the pre-procedural clinical state of the patient. Radiologic follow-up is necessary to prevent hemorrhage recurrence after EVT.

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References

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