護理師照顧一位 SIADH 病人。應優先處理哪項發現？
A nurse is caring for a client with a diagnosis of Syndrome of Inappropriate Antidiuretic Hormone (SIADH). Which finding should the nurse prioritize?
- AWeight gain without edema無水腫的體重增加
- BHigh urine specific gravity高尿液比重的
- CLow serum sodium level✓ 正解低血清鈉濃度
- DTachycardia心跳過速
抗利尿激素不適當分泌症候群（SIADH）會導致水分在體內過度滯留，進而引發稀釋性低血鈉（Dilutional hyponatremia）。低血鈉是此病症最危急的生理問題，因為它會導致腦細胞水腫，引發神經系統症狀，如抽搐、意識混亂甚至昏迷。相比之下，體重增加或尿比重改變是病程表現，但不具即時威脅生命性。護理師必須優先處理低血鈉以確保病人安全。
Syndrome of inappropriate antidiuretic hormone (SIADH) causes excessive water retention in the body, leading to dilutional hyponatremia. Hyponatremia is the most critical physiologic problem in this condition because it causes cerebral edema and produces neurologic symptoms such as seizures, confusion, and even coma. By comparison, weight gain or changes in urine specific gravity are manifestations of the disease process but do not pose an immediate threat to life. The nurse must prioritize the low sodium level to ensure patient safety.