— 照護管理 · MEDIUM · MCQ —
下列哪項是低血鉀病人的預期發現？
Which of the following is an expected finding in a client with hypokalemia?
- AMuscle weakness and fatigue✓ 正解肌肉無力和疲倦
- BTall, peaked T-waves高大尖銳的 T 波
- CHyperreflexia反射亢進
- DShortened QT intervalQT 間期縮短
— Explanation · 中文詳解 —
鉀離子（Potassium）對神經肌肉傳導與心肌收縮至關重要。低血鉀（Hypokalemia）會導致神經肌肉細胞的靜止膜電位過極化，進而出現肌肉無力（Muscle weakness）、疲勞、腿部抽筋，甚至嚴重的呼吸肌麻痺。臨床評估時，護理師應密切觀察病人的肌肉力量與心電圖變化，因為嚴重低血鉀可能誘發致命性的心律不整。
Potassium is essential for normal nerve impulse transmission and muscle contraction. Hypokalemia causes hyperpolarization of the resting membrane potential, leading to symptoms such as muscle weakness, fatigue, cramps, and potentially fatal arrhythmias.