颈动脉窦性晕厥

• 作 者: 傅远根
• 机 构: 铁道部洛阳机车工厂医院内科,
• 出 处: 医师进修杂志
• 发表日期: 1985年03期
• 关键词: 颈动脉窦性晕厥 颈动脉窦过敏 外颈动脉 窦神经 血管运动中枢 临床急症 抑制中枢 颈神经 髓鞘 交通支

晕厥属临床急症,由颈动脉窦过敏或受压所致者称为颈动脉窦性晕厥(CSS)。颈动脉窦通过一个复杂的反射弧参与对心率和血压的控制。反射弧的传入支始自位于颈动脉窦外膜的血管感受器,并在这新月面上形成有髓鞘的螺旋状神经纤维,构成赫林氏窦神经,其纤维经内、外颈动脉之间加入舌咽神经,与迷走神经颈神经节和舌下神经亦有交通支。舌下神经再向上进入位于延髓网状结构中的心脏抑制中枢和血管运动中枢。反射弧的传出支由迷走神经

Syncope is a clinical emergency, caused by carotid sinus allergy or compression called carotid sinus syndrome (CSS). The carotid sinus is involved in the control of heart rate and blood pressure through a complex reflex arc. The afferent branch of the reflex arc begins with the vascular receptors located in the adventitia of the carotid sinus, and forms myelinated spiral nerve fibers on this crescent, forming the Herring’s sinus nerve, whose fibers pass through the internal and external carotid arteries Between the addition of glossopharyngeal nerve, and vagus nerve ganglia and hypoglossal also traffic. The hypoglossal nerve then re-enters the cardiac inhibitory and vasomotor centers located in the medulla oblongata. Reflex arc outgoing branch by the vagus nerve