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在胚胎早期,三叉动脉(PTA)起短暂的连接大脑前、后循环的作用。血液通过PTA从预内动脉系流入椎动脉系,随着椎动脉的发育,三叉动脉退化和关闭。偶然情况,三叉动脉持久存在,而产生血管变异及循环改变,易导致下脑干循环障碍。 作者报告1例30岁男性,8天内反复卒中2次。第一次仅感右侧肢体及右耳周麻木,右手持物无力;第二次突发左眼剧烈疼痛,嗜睡,左面部麻木,吞咽
Early in the embryo, the trigeminal artery (PTA) plays a transient role in connecting the anterior and posterior circulation of the brain. Blood flows into the vertebral artery system through the PTA from the pre-internal arterial line, and as the vertebral artery develops, the trigeminal artery degenerates and closes. Occasionally, the persistent existence of the trigeminal artery, resulting in vascular changes and changes in circulation, easily lead to disorders of the brainstem circulation. The authors report a 30-year-old man who had repeated strokes twice within 8 days. The first time only feel the right limb and right ear numbness, right hand holding weakness; the second sudden severe left eye pain, lethargy, left facial numbness, swallowing