— 生理適應 · EASY · MCQ —
病人被診斷為低鉀血症。護理師應優先監測下列何者？
A client is diagnosed with hypokalemia. The nurse should prioritize monitoring for which of the following?
- ACardiac arrhythmias✓ 正解心律不整
- BHyperactive bowel sounds腸鳴音亢進
- CHypertension高血壓
- DIncreased muscle tone肌肉張力增加
— Explanation · 中文詳解 —
鉀離子（Potassium）對心肌細胞的電生理活動極為重要。低鉀血症（Hypokalemia）會導致心肌細胞膜電位不穩定，增加心律不整（Arrhythmias）的風險，如心室早期收縮（PVCs）、U 波出現或嚴重的心室顫動，這些都是致命的併發症。因此，監測心電圖（ECG）變化是照顧低鉀血症病人的最高護理優先級。
Potassium is critically important to the electrophysiological activity of myocardial cells. Hypokalemia destabilizes the cardiac cell membrane potential, increasing the risk of arrhythmias such as premature ventricular contractions (PVCs), the appearance of U waves, or severe ventricular fibrillation, all of which are life-threatening complications. Therefore, monitoring ECG changes is the highest nursing priority in caring for the client with hypokalemia.