Postradiosurgery Hemorrhage Rates of Arteriovenous Malformations of the Brain Influencing Factors and Evolution With Time
作者： Vera Parkhutik , Aida Lago , José Ignacio Tembl , Juan Francisco Vázquez , Fernando Aparici
DOI: 10.1161/STROKEAHA.111.635789
关键词: Radiosurgery 、 Medicine 、 Older patients 、 Eloquent cortex 、 Occlusion 、 Surgery 、 Follow up studies 、 Young adult 、 Retrospective cohort study 、 Interquartile range
摘要: Background and Purpose—The long-term benefit of radiosurgery brain arteriovenous malformations (AVM), especially nonhemorrhagic cases, is controversial. We calculated hemorrhage rates pre- posttreatment analyzed the risk factors for bleeding based on cases followed at our site. Methods—One hundred eight patients, age 36±17 years, 56 men. The mean follow-up was 65±44 months (median, 54; interquartile range, 33–94). Most AVMs were small (74.1% <3 cm in diameter); 48.1% located an eloquent area, 27.8% had deep drainage, 39.8% presented with hemorrhage. Results—The annual rate any undiagnosed AVM 1.2%, 3.3% hemorrhagic presentation. Older cortical or subcortical AVMs, multiple draining veins less likely to present bleeding. During first 36 postradiosurgery, a rebleeding 2.1%, 1.1% from 3 years onwards. Nonhemorrhagic 1.4% during ...
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