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目的:探讨与脑动静脉畸形(AVM)出血相关的临床及血管影像学特征,以期对脑 AVM 的出血倾向作出评价和预测。方法:应用 Cox 回归模型,对59例脑 AVM 进行出血危险因素的单因素及多因素分析.结果:59例脑 AVM 中,观察期内出血48例(占81.4%),年平均出血率为2.3%;病灶大小、供应动脉支数以及引流静脉支数是决定脑 AVM 出血倾向最重要的危险因素;小型 AVM、多支动脉供应的 AVM 以及仅有单支静脉引流的 AVM 最易破裂出血。结论:建议脑血管造影时着重对此三项指标进行描述;对于出血风险较大的脑 AVM 应及早治疗。
Objective: To investigate the clinical and vascular imaging features related to cerebral AVM hemorrhage in order to evaluate and predict the bleeding tendency of brain AVM. Methods: Cox regression model was used to univariate and multivariate analysis of bleeding risk factors in 59 cases of brain AVM.Results: In 59 cases of brain AVM, 48 cases (81.4%) had hemorrhage during the observation period with an average annual bleeding rate of 2.3% The size of the lesion, the number of arterial supply, and the number of drainage veins were the most important risk factors for the bleeding tendency of the brain AVM. The small AVM, the multi-artery AVM and the single venous drainage AVM were the most easily ruptured. Conclusion: It is suggested that these three indexes should be described emphatically in cerebral angiography. Brain AVM with high bleeding risk should be treated as soon as possible.