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Complications of embolization for cerebral arteriovenous malformations. 2004

K Sugiu, and K Tokunaga, and W Sasahara, and K Watanabe, and A Nishida, and S Ono, and S Nishio, and I Date, and D A Rüfenacht
Department of Neurological Surgery, Okayama University Medical School, Okayama; Japan - ksugiu@md.okayama-u.ac.jp.

Embolization is recognized as an important adjunct in the treatment of cerebral arteriovenous malformations (AVMs). We reviewed our results of embolizations for AVMs and discussed procedure-related complications. Eleven complications were recorded in 68 consecutive patients (16%). Of these, four were technical problems including a glued catheter, inability to withdraw the catheter, vessel perforation by the microcatheter, and coil migration. Other complications included three cases of ischemic symptoms due to retrograde thrombosis, two cases of asymptomatic cerebral infarction, one case of asymptomatic small haemorrhage due to venous occlusion, and one case of post-embolization haemorrhage of unknown etiology. Our morbidity rate was 7%, mortality rate was 0%, and asymptomatic complication rate was 9%, retorospectively. Further improvements to endovascular techniques and devices are required.

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