— 生理適應 · MEDIUM · MCQ —
一位病人被診斷為低血容性休克。下列哪項發現是最早期的臨床徵象?
A client is diagnosed with hypovolemic shock. Which finding is the earliest clinical sign?
- ATachycardia✓ 正解心跳過速
- BHypotension低血壓
- COliguria少尿
- DConfusion意識混亂
— Explanation · 中文詳解 —
低血容性休克(Hypovolemic shock)發生時,身體的代償機制會優先維持心輸出量。心跳過速(Tachycardia)是身體嘗試透過增加心率來補償血液流失,維持血壓的最早反應。低血壓(Hypotension)則是晚期失代償徵象,當身體已無法代償時才會出現。尿量減少與意識不清皆為進展後的表現。護理師需識別心跳過速這一早期徵象,以便及時介入補液。
Tachycardia is the earliest clinical sign of hypovolemic shock, representing the body's primary compensatory mechanism to maintain cardiac output. Hypotension is a late sign indicating decompensation, while oliguria and confusion occur as perfusion deficits progress.