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暂时性脑缺血发作是由于脑的短暂性血液供应不足而出现的一组临床症状。脑部的血供由两大动脉完成,即领内动脉系统及推一基底动脉系统。临床上颈内动脉系统的暂时性缺血较多见,而后者则较少见,因而极易造成误诊。 根据缺血的局灶部位及范围不同使推一基底动脉供血不足临床表现多种多样,非常复杂,且发作的频度与形式也因个体而差异很大。我们知道,推动脉颅内段及其分支主供上段颈髓和延髓;基底动脉及分支供血主要营养内耳、脑桥、中脑、间脑、小脑、枕叶皮层及颜叶一部分。所以当推一基底动脉供血不足时,临床可以出现相应部位的功能缺损。常见症状有以下几种: 1、眩晕:呈旋转性、摇摆性、浮动性,甚至站不稳,双下肢发软、地面倾抖感、乏力或头,‘澎晕眼花,突然转头时易诱发。下由果力是.如2、视觉障碍:突发视降,弱视于大脑脑干内第核缺血可泌玩岌祝、视一为二、闪光、暗勺视妙娜视热变形或幻视等。「;3、头痛:主要疼痛部位为头顶部或啥后枕部、颈部至双濒侧滚部。可有跳痛、’胀痛或牵扯性头痛,并可伴恶心’、呕吐,有时头痛也可伴眼部症状。 ·4、运动障碍:①延髓麻痹也叫球麻痹,表现为说话不能,吞咽困难,饮水发呛,软胯麻痹。 ’②周围性萝。。。面瘫或交又瘫;,:’‘即一侧周围性面瘫同时有对侧肢体瘫
A transient ischemic attack is a group of clinical symptoms that arise due to a transient lack of blood supply to the brain. The blood supply to the brain is accomplished by two major arteries, namely the internal collar artery system and the push-basilar artery system. Clinically, internal carotid artery transient ischemia is more common, while the latter is rare, which can easily lead to misdiagnosis. According to the ischemic focal site and the scope of different to push a basilar artery insufficiency clinical manifestations varied, very complicated, and the frequency and form of seizures also vary widely due to the individual. We know that to promote intracranial intracranial segments and its main branch for the upper cervical spinal cord and medulla; basilar artery and branch of the main nutrient supply inner ear, pons, midbrain, midbrain, cerebellum, occipital cortex and part of the leaf. Therefore, when the push of a basilar artery insufficiency, clinical functional defect may appear in the corresponding parts. Common symptoms are the following: 1, dizziness: was rotating, swinging, floating, and even unstable, double lower extremities soft, ground leaning, fatigue or head, ’dizzy, suddenly turned around easily Induced. Under the fruit is .As 2, visual impairment: sudden drop in visual acuity, amblyopia in the brainstem brainstem ischemia can exocarp play perilous, as a second, flash, dark spoon as Mi Na thermal deformation or magic Visual wait. 3, headache: the main part of the pain for the top of the head or post-occipital, neck to double-end roll Department may have jump pain, ’pain or traction headache, and may be accompanied by nausea, vomiting, sometimes headache Can also be accompanied by eye symptoms. * 4, dyskinesia: ① bulbar paralysis, also known as paralysis of the ball, manifested as unable to speak, swallowing difficulties, drinking water choking, soft hip paralysis. ;,: ’’ That side of the facial paralysis while contralateral paralysis