— 生理適應 · MEDIUM · MCQ —
護理師監測一名甲狀腺切除術後患者的低血鈣徵象。下列哪項評估結果代表 Chvostek 徵象陽性？
A nurse is monitoring a client post-thyroidectomy for signs of hypocalcemia. Which assessment finding indicates a positive Chvostek's sign?
- ACarpal spasm occurring after inflating a blood pressure cuff充氣血壓袖帶後出現腕部痙攣
- BTwitching of the facial muscles when tapping the facial nerve✓ 正解輕敲面部神經時面部肌肉抽搐
- CDevelopment of a widespread urticarial rash出現廣泛性蕁麻疹
- DExtreme irritability and confusion極度煩躁和意識混亂
— Explanation · 中文詳解 —
甲狀腺切除術後，若副甲狀腺（Parathyroid glands）意外受損或被移除，會導致血鈣迅速下降（低血鈣）。低血鈣會增加神經肌肉的興奮性，臨床上可透過 Chvostek 徵象（輕敲顏面神經引發抽動）與 Trousseau 徵象（測量血壓引發腕痙攣）進行評估。這是術後緊急監測的重點，需預防喉頭痙攣造成的呼吸道阻塞。
Post-thyroidectomy, accidental damage to the parathyroid glands can cause rapid hypocalcemia, increasing neuromuscular excitability. Chvostek's sign is assessed by tapping the facial nerve, which triggers twitching of the facial muscles in clients with low calcium levels.