護理師照護一名低血鉀病人。下列何種發現需優先向醫師報告？
A nurse is caring for a client with hypokalemia. Which finding should the nurse prioritize reporting to the provider?
- ADiminished bowel sounds腸蠕�音減弱
- BReports of constipation主訴便秘
- CIrregular heart rhythm on the monitor✓ 正解監護儀顯示心律不整
- DMuscle weakness in the lower extremities下肢肌肉無力
低血鉀（Hypokalemia）對心肌電生理影響深遠，會導致心肌興奮性改變，出現心律不整（如 U 波出現、心室期外收縮）。心律不整是直接威脅生命安全的緊急狀況，必須優先處理。雖然肌肉無力、便秘與腸蠕動減慢是常見症狀，但這些屬於慢性生理適應，相較於可能隨時致命的心律不整，心電圖監測異常應作為最優先通報事項。護理師應隨時監測心電圖變化，並準備適當的鉀補充方案。
Hypokalemia has a profound effect on myocardial electrophysiology, altering myocardial excitability and producing arrhythmias (such as U waves and premature ventricular contractions). Arrhythmias directly threaten life safety and must be addressed as a priority. Although muscle weakness, constipation, and decreased bowel motility are common symptoms, these represent chronic physiological adaptations; compared with potentially fatal arrhythmias, ECG abnormalities should be reported as the top priority. The nurse should continuously monitor ECG changes and prepare an appropriate potassium replacement regimen.