脑膜瘤在颅内肿瘤中属于多供血的肿瘤 ,按其供血情况分为四型 ,即颈外动脉单纯供血型 ,颈内动脉单纯供血型 ,颈内外动脉供血以颈外为主型 ,颈内外动脉供血以颈内为主型 ,由于其供血特点决定了术中出血较多 ,因此术前输血对策的设计尤为重要 ,以往大多输异体血液 ,但因术中用血 Meningioma in the intracranial tumors are multi-donor tumors, according to their blood supply is divided into four types, that is, pure external carotid artery type, internal carotid artery blood supply type, external and internal carotid artery blood supply to the main external type, internal and external neck Arterial blood supply to the main type of the neck, because of its blood supply characteristics of the decision of intraoperative bleeding more, so the design of preoperative transfusion strategy is particularly important in the past mostly lose allogeneic blood, but due to intraoperative blood