神經性休克(Neurogenic shock):頸椎或上胸椎的傷害會造成交感神經功能喪失而導致低血壓;若在較高位的頸椎受損其低血壓會伴隨心搏過慢(bradycardia)

Neurogenic shock

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http://en.wikipedia.org/wiki/Neurogenic_shock

 

Neurogenic shock is a distributive type of shock resulting in hypotension, occasionally with bradycardia, that is attributed to the disruption of the autonomic pathways within the spinal cord. Hypotension occurs due to decreased systemic vascular resistance resulting in pooling of blood within the extremities lacking sympathetic tone. Bradycardia results from unopposed vagal activity and has been found to be exacerbated by hypoxia and endobronchial suction.[1] Neurogenic shock can result from severe central nervous system damage (brain injury, cervical or high thoracic spinal cord).[2] In more simple terms: the trauma causes a sudden loss of background sympathetic stimulation to the blood vessels. This causes them to relax (vasodilation)[3] resulting in a sudden decrease in blood pressure (secondary to a decrease in peripheral vascular resistance).

Neurogenic shock can be a potentially devastating complication, leading to organ dysfunction and death if not promptly recognized and treated. It is not to be confused with spinal shock, which is not circulatory in nature.

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