一位病人的鉀離子濃度為 6.8 mEq/L。下列何項發現需立即通知初級醫療照護提供者？
A client is diagnosed with hyperkalemia (K+ 6.8 mEq/L). Which finding requires immediate notification to the primary healthcare provider?
- APresence of peaked T waves on the cardiac monitor✓ 正解心電圖監測器出現尖峰T波
- BBowel sounds are hyperactive腸鳴音亢進
- CClient reports generalized muscle weakness個案報告全身性肌肉無力
- DClient complains of nausea and vomiting個案抱怨噁心和嘔吐
高血鉀（Hyperkalemia）對心臟電生理影響劇烈，嚴重者會導致致命性心律不整。在心電圖上，高血鉀的典型演變為：T 波尖銳（Peaked T waves）→ PR 間期延長 → QRS 波群變寬 → 心室顫動或心跳停止。因此，當發現尖銳 T 波時，代表心肌已受高血鉀影響，必須立即通報醫師進行緊急降血鉀處置（如給予鈣劑、胰島素加葡萄糖）。
Hyperkalemia has a dramatic effect on cardiac electrophysiology and, when severe, can produce lethal dysrhythmias. On the ECG, hyperkalemia typically evolves as follows: peaked T waves -> prolonged PR interval -> widened QRS complex -> ventricular fibrillation or asystole. Therefore, when peaked T waves are noted, the myocardium is already affected by hyperkalemia, and the physician must be notified immediately so emergency potassium-lowering measures (such as calcium, insulin with glucose) can be started.