BACKGROUND: The risk of @entity548 from a brain @entity2758 (bAVM) is increased when an associated proximal @entity438 (APIA) is present. Identifying factors that are associated with APIA may influence the prediction of @entity548 in @entity1 with bAVM. OBJECTIVE: To identify @entity1 - and bAVM-specific factors associated with APIA. METHODS: We analyzed a prospective database of bAVMs for factors associated with the presence of APIA. Factors analyzed included age, sex, bAVM size, @entity439 size, circulation contributing to the bAVM, location of the @entity439 , @entity1150 , and Spetzler-Ponce categories. Multiple logistic regression was performed to identify an association with APIA. RESULTS: Of 753 cases of bAVM with complete angiographic surveillance, 67 (9%) were found to have APIA. Older age (continuous variable; odds ratio, 1.04; 95% confidence interval, 1.02-1.05) and posterior circulation supply to the bAVM (odds ratio, 2.29; 95% confidence interval, 1.32-3.99) were factors associated with increased detection of APIA. The association of posterior circulation-supplied bAVM was not due to infratentorial bAVM location because 72% of posterior circulation APIAs were supplying supratentorial bAVM. CONCLUSION: APIAs appear to develop with time, as evident from the increased age for those with APIAs. Furthermore, they were more likely present in bAVMs supplied by the posterior circulation. This may be due to a difference in hemodynamic stress. ABBREVIATIONS: APIA, associated proximal @entity932 , brain arteriovenous malformationDSA, digital subtraction angiographySMG, Spetzler-Martin gradeSPC, Spetzler-Ponce category.

Factors Associated With @entity438 to Brain XXXX : A Prospective Cohort Study.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity932 :: ('MESH:D020300', 'Disease') :: ['intracranial aneurysmbAVM'] @entity2758 :: ('MESH:D001165', 'Disease') :: ['arteriovenous malformation'] @entity548 :: ('MESH:D006470', 'Disease') :: ['hemorrhage'] @entity1150 :: ('MESH:D020246', 'Disease') :: ['deep venous drainage'] @entity439 :: ('MESH:D000783', 'Disease') :: ['aneurysm'] @entity438 :: ('MESH:D002532', 'Disease') :: ['intracranial aneurysm']
@entity2758 :: (MESH:D001165,Disease) :: ['Arteriovenous Malformations']
