— 生理適應 · HARD · MCQ —
一位疑似 T4 脊髓損傷病人被送入急診。哪項發現最可能顯示其發生了神經源性休克？
A client with a suspected spinal cord injury at T4 is brought to the emergency department. Which finding would most likely indicate neurogenic shock?
- AHypertension and warm extremities高血壓與四肢溫暖
- BTachycardia and cool skin心搏過速與皮膚冰冷
- CTachycardia and hypotension心搏過速與低血壓
- DBradycardia and hypotension✓ 正解心搏過緩與低血壓
— Explanation · 中文詳解 —
神經源性休克是因交感神經張力喪失，導致血管擴張（血壓下降）和副交感神經相對亢進。不同於其他休克會代償性心跳加快，神經源性休克的特徵是「心跳緩慢（Bradycardia）」合併「低血壓」。C、B 為常見休克表現，A 為自主神經反射異常。
Neurogenic shock results from the loss of sympathetic tone, causing peripheral vasodilation and unopposed vagal activity. This leads to the characteristic presentation of hypotension and bradycardia, distinguishing it from other shock types that typically cause tachycardia.
✦ 台美臨床差異
無差異。此為急症生理學的經典區別點。