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Critical appraisal of endovascular treatment of brain arteriovenous malformation using Onyx in a series of 92 consecutive patients

  • Clinical Article - Vascular
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Abstract

Background

The introduction of Onyx has led us to adopt a new treatment approach for brain arteriovenous malformation (AVM), using endovascular embolization with Onyx as the first line treatment with a curative intent. The aim of the present report is to evaluate our results using this strategy, with special emphasis on angiographic characteristics affecting treatment risks and success rates.

Methods

From October 2006 to December 2009, 92 consecutive patients harboring brain AVM were treated with Onyx during 177 procedures.

Results

Endovascular treatments were completed in 68 out of 92 patients. Median number of procedures was two. Complete obliteration using embolization exclusively was achieved in 25 patients, resulting in a 37 % cure rate in patients who concluded treatments (25/68), and 27 % in the cohort. In Spetzler-Martin grades 1 & 2 AVMs, complete obliteration was achieved in 48 % of the cases. Complete obliteration rates were significantly higher in lesions with superficial big feeding arteries. There were 15 bleeding complications during 177 embolization sessions (8.4 % per procedure); seven cases resolved in less than 3 months. Permanent disability rate was 6.5 %; mortality rate was 2.2 %. Bleeding was related to the use of the microcatheter/guidewire in six cases and to the use of the embolization material in nine, the amount of Onyx injected was significantly higher in those nine cases.

Conclusions

Embolization of brain AVM using Onyx and detachable tip microcatheters results in a relatively high rate of complete obliteration. Angioarchitecture of the lesion can predict treatment success. Higher amounts of Onyx injected per session increase the bleeding risk.

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Authors and Affiliations

  1. Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, 6 Weizmann Street, Tel Aviv, 64239, Israel

    Ido Strauss, Vladimir Frolov, Dana Buchbut, Lior Gonen & Shimon Maimon

  2. Unit of Interventional Neuroradiology, Department of Neurosurgery, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel

    Vladimir Frolov & Shimon Maimon

Authors
  1. Ido Strauss
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  2. Vladimir Frolov
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  3. Dana Buchbut
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  4. Lior Gonen
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  5. Shimon Maimon
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Corresponding author

Correspondence to Shimon Maimon.

Additional information

I. Strauss and S. Maimon contributed equally to this work.

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Strauss, I., Frolov, V., Buchbut, D. et al. Critical appraisal of endovascular treatment of brain arteriovenous malformation using Onyx in a series of 92 consecutive patients. Acta Neurochir 155, 611–617 (2013). https://doi.org/10.1007/s00701-013-1633-0

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  • DOI: https://doi.org/10.1007/s00701-013-1633-0

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