title: Balloon-assisted technique for trapped microcatheter retrieval following onyx embolization. A case report.
abstract: During embolization of a large frontal arteriovenous malformation (AVM), Onyx-18 (eV3) was injected into an M3 branch of the middle cerebral artery via a Marathon microcatheter (eV3). After 40 minutes of embolization, the microcatheter could not be retracted due to fixation within the Onyx cast despite prolonged, robust attempts. A balloon microcatheter (Hyperform(TM), eV3) was advanced distally and inflated to provide distal counter tension, allowing microcatheter retrieval with minimal traction on the vasculature.
authors.affiliation: Department of Radiology, New York Presbyterian Hospital - Cornell; New York, USA - waz2002@nyp.org.
authors.forename: A
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authors.lastname: Knopman
authors.forename: H
authors.initials: H
authors.lastname: Riina
authors.forename: Y P
authors.initials: YP
authors.lastname: Gobin
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