Abstract:

Objective   To study the risks of bleeding in patients with AVM by means of DSA analysis of cerebral angioarchitecture. Methods   Digital subtraction angiography (DSA) was conducted on 87 patients with AVM. The possible relationships between bleeding and factors such as the location and size of AVM masses, the type and site of supplying arteries, the number and pathway of venous drainage, the co-existing aneurysms or venous tumors and their locations, were assessed using univariate analysis and binary logistic regression. Results   Univariate analysis suggested that factors that were positively correlated to hemorrhagic presentation included the site and size of AVM masses, the type and site of supplying arteries, the number of venous drainages, and co-existing aneurysms. Step-wise multiple logistic regression analysis revealed that only the number of venous drainage and co-existing aneurysms were independent predictors for hemorrhagic presentation. ConclusionT   he number of venous drainages and coexisting aneurysms are risk predictors for hemorrhagic AVM presentation.

Key words: Cerebrovascular diseases; Arteriovenous malformation; Intracranial hemorrhage; Digital subtraction angiography; Risk factor analysis