Multimodal Interventional Treatment and Outcomes for Unruptured Arteriovenous Malformations

Acta Neurochirurgica. Supplement
Daisuke MaruyamaJun C Takahashi

Abstract

This study aimed to evaluate the selection and outcomes of multimodal interventional treatment for unruptured brain arteriovenous malformations (uAVMs) in ARUBA-eligible patients in a single institution. We retrospectively reviewed the data of 94 patients with uAVMs treated between 2002 and 2014. They were divided into an intervention group and a conservative group. The primary outcome was defined as the composite of death or symptomatic stroke. Functional outcome was assessed using the modified Rankin Scale (mRS). The intervention and conservative groups included 75 and 19 patients, respectively, with mean follow-up periods of 59.2 ± 41.6 and 72.8 ± 39.2 months (P = 0.20), among whom the primary outcome occurred in 9 (12.3%) and 3 (17.6%) patients, respectively (P = 0.91). The proportion of patients with an mRS score ≥ 2 at last follow-up was not significantly different between the two groups (6.9% vs. 11.7%). In the intervention group, the incidence of death or stroke was lower and functional outcomes were better among patients with grade I/II AVMs than among patients with grade III AVMs. For patients with uAVMs, interventional treatment is not inferior to medical treatment alone, and careful selection should be made for pati...Continue Reading

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