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Assessing the Role of Preoperative Embolization in the Surgical Management of Cerebral Arteriovenous Malformations.

Abstract：

BACKGROUND:Preoperative embolization is established as an advantageous adjunct in multimodality treatment of cerebral arteriovenous malformations (AVMs). However, the benefit of preoperative embolization in AVMs with favorable surgical risk profile is debatable, because it has yet to be supported by evidence in comparative studies. In this study, we assessed outcome of surgically treated patients in a comparative setting. METHODS:Our institutional AVM database of retrospectively and prospectively collected data between 1990 and 2015 was reviewed. Patients with complete clinical data who underwent surgical resection for AVMs were included. We performed a 1:1 ratio propensity score match for baseline variables that differed between patients with or without preoperative embolization. Differences in surgical risk and outcomes were evaluated between these 2 groups. RESULTS:AVM size, eloquence, deep drainage, middle cerebral artery feeder, and ruptured presentation differed significantly between the 2 groups. Forty-eight patients without preoperative embolization were matched to 48 with embolization, with no significant differences in baseline variables or AVM characteristics between the 2 groups. We found no significant differences in AVM obliteration and postoperative modified Rankin Scale (mRS) score between embolized and nonembolized patients, respectively. Change in mRS score from preoperative score was also not significant, although more embolized patients had a decline in mRS score. Secondary outcome measures including duration of surgery (P = 0.172), intraoperative bleeding (P = 0.280), duration of hospitalization (P = 0.368), and postoperative symptoms were also similar between both groups. CONCLUSIONS:Our data do not support substantial benefit of preoperative embolization for patients with a favorable surgical risk profile. Because of risks and costs with this intervention, the prudent use of preoperative embolization should be individually considered.

journal_name

World Neurosurg

journal_title

World neurosurgery

authors

Luksik AS,Law J,Yang W,Garzon-Muvdi T,Caplan JM,Colby G,Coon AL,Tamargo RJ,Huang J

doi

10.1016/j.wneu.2017.05.026

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

430-441

eissn

1878-8750

issn

1878-8769

pii

S1878-8750(17)30714-3

journal_volume

104

pub_type

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