病人診斷為高血鈉症。下列何項評估發現最符合此診斷？
A client is diagnosed with hypernatremia. Which assessment finding is most consistent with this diagnosis?
- AMuscle twitching肌肉抽搐
- BDependent edema下肢水腫
- CIncreased thirst✓ 正解口渴增加
- DBradycardia心動過緩
高血鈉症（Hypernatremia）的核心病理是細胞外液滲透壓增高，導致細胞內水分外移，引發細胞脫水。口渴中樞（Thirst center）位於下視丘，對血漿滲透壓變化極為敏感，當血鈉升高時，身體會啟動飲水機制以稀釋血鈉。此題考查臨床表徵的優先順序，口渴是身體維持體液恆定的早期且最直接的代償反應。
The core pathology of hypernatremia is an increase in extracellular osmolality, which causes water to shift out of the cells and produces cellular dehydration. The thirst center, located in the hypothalamus, is highly sensitive to changes in plasma osmolality, and when serum sodium rises the body activates drinking behavior to dilute the sodium. This question tests prioritization of clinical findings; thirst is the earliest and most direct compensatory response by which the body maintains fluid balance.