護理師照護一位低鉀血症的病患。下列哪項發現應優先向醫師報告？
A nurse is caring for a client with hypokalemia. Which finding should the nurse prioritize for reporting to the provider?
- AIrregular heart rhythm on the cardiac monitor✓ 正解心電圖監測器上出現心律不整
- BMuscle cramps in the lower extremities下肢肌肉痙攣
- CGeneralized weakness全身無力
- DDecreased bowel sounds腸鳴音減弱
低鉀血症（Hypokalemia）會導致心肌細胞膜電位穩定性下降，引發心律不整（Cardiac dysrhythmias），這是最直接威脅生命的併發症。在 NCLEX 的 ABC（Airway, Breathing, Circulation）原則中，心血管穩定性屬於 Circulation 的核心，因此心律不整必須優先處理。雖然肌肉痙攣、腸蠕動減慢與全身無力也是常見症狀，但相較於可能演變成致命性心室顫動的心律不整，後者具有最高的臨床優先級（Priority）。
Hypokalemia reduces the stability of the cardiac myocyte membrane potential, predisposing the client to cardiac dysrhythmias, which are the most directly life-threatening complication. Under the NCLEX ABC (Airway, Breathing, Circulation) framework, cardiovascular stability falls under Circulation and therefore must be addressed first. Although muscle cramps, decreased bowel motility, and generalized weakness are also common findings, they have lower clinical priority compared to dysrhythmias that may progress to lethal ventricular fibrillation.