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颅底或累及颅底的肿瘤治疗,通常需将颈内动脉(ICA)易位,用气球阻断甚至切除。术前预测大脑侧枝血循状况的试验方法尚未统一,颈动脉干压力测定和眼球体积描记法(OPG)能反映颈内动脉远端的压力,但却不能显示大脑前、中动脉的血流状况。在严密监测下以气球阻断ICA(TBO法)能判断出无血流储备的患者,如永久性阻断ICA,是否处于中枢神经系统损害的高危状态,但是对于血流储备不良,有可能发生延期脑梗塞的患者,此法则不能予以识别。此类患者
The treatment of tumors at the base of the skull or involving the base of the skull usually involves translocation of the internal carotid artery (ICA), blocking with a balloon or even ablation. Preoperative prediction of collateral blood flow in the brain has not been standardized. Carotid artery dry pressure measurement and ocular plethysmography (OPG) can reflect the pressure of the distal internal carotid artery, but it can not show the blood flow status of the anterior and middle cerebral arteries. . Under close surveillance, balloon-blocked ICA (TBO method) can identify patients with no blood flow reserve, such as permanently blocking ICA, whether it is in a high-risk state of central nervous system damage, but for poor blood flow reserve, it may happen. In patients with delayed cerebral infarction, this law cannot be identified. Such patients