護理師照護一位高血鉀病人。下列哪項診斷結果需優先回報給醫師？
A nurse is caring for a client with hyperkalemia. Which diagnostic finding should the nurse prioritize for immediate reporting to the provider?
- ABilateral abdominal cramping雙側腹部絞痛
- BPeaked T-waves on the ECG✓ 正解心電圖出現尖峰T波
- CMild muscle weakness in the lower extremities下肢輕微肌肉無力
- DPotassium level of 5.6 mEq/L鉀離子濃度為 5.6 mEq/L
高血鉀（Hyperkalemia）會嚴重干擾心肌細胞的電位傳導，導致致命性心律不整。ECG 上的變化是診斷高血鉀對心臟毒性影響的關鍵指標。尖峰 T 波（Peaked T-waves）是早期警訊，若未及時處理，隨後會出現 PR 間期延長、QRS 波變寬，最終導致心室顫動（V-fib）或心搏停止（Asystole）。護理師在處理高血鉀病人時，必須優先評估心臟穩定度。
Hyperkalemia severely disrupts electrical conduction in cardiac myocytes and can produce fatal dysrhythmias. ECG changes are the key indicator of cardiac toxicity from hyperkalemia. Peaked T waves are an early warning sign; if left untreated, prolonged PR intervals, widened QRS complexes, and ultimately ventricular fibrillation or asystole may follow. When caring for clients with hyperkalemia, the nurse must prioritize assessment of cardiac stability.