Use of Onyx (a patented ethylene-vinyl alcohol copolymer formulation) embolisation of cerebral arteriovenous malformations in Hong Kong: initial experience

George KC Wong, Simon CH Yu, XL Zhu, Michael KM Kam, WS Poon

Abstract

OBJECTIVE: To review the experience with Onyx embolisation of cerebral arteriovenous malformation.

DESIGN: Prospective study.

SETTING: A regional neurosurgical centre in Hong Kong.

PATIENTS: Data of patients with cerebral arteriovenous malformation who underwent Onyx embolisation over a 14-month period were prospectively collected.

RESULTS: Eleven sessions of Onyx embolisation were performed in nine patients with cerebral arteriovenous malformations, seven of which had ruptured. Total occlusion was achieved in three (33%) of the patients, and subtotal occlusion (over 80% occlusion) in three out of four with Spetzler-Martin grade-III/IV malformations. One patient developed mild permanent neurological deficit.

CONCLUSION: Onyx embolisation of cerebral arteriovenous malformations is feasible in Hong Kong. Careful patient and target selection are important

Full publication:  http://www.hkmj.org/article_pdfs/hkm0910p359.pdf