Delayed Hemorrhage After Treatment of Brain Arteriovenous Malformations (AVMs)

摘要: Objective The risk of delayed hemorrhage occurring greater than 2 years after treatment in brain arteriovenous malformations (AVMs) rarely is reported. In this study, we compare the across different modalities. Methods We performed a retrospective chart review treated patients with single intracranial AVM seen at our institution from 1990 to 2013. Delayed was defined as least last treatment. Survival analysis used assess by Results Our study included 420 patients. Spetzler-Martin grades were follows: I (12.6%), II (36.2%), III (32.6%), IV (15.0%), and V (3.6%). Average follow-up time 5.1 years. Twenty-two (5.2%) found have 28 hemorrhages. interval between 7.6 years, longest being 24.2 Proportions hemorrhages modalities surgery ± embolization (group I, 9.1%), radiosurgery II, 63.6%), only III, 22.7%), surgery + IV, 4.5%). Annualized for each group (0.4%), (1.2%), (3.7%), (1.7%). demonstrated lowest 1 (P Conclusions This first Surgical resection associated compared other Patients partially embolized AVMs should seek timely definitive decrease hemorrhage.