護理師在社區課程中教導高齡者預防熱傷害，哪項建議最重要？
A nurse is teaching a community class about preventing heat-related illness in elderly clients. Which suggestion is most important?
- AWear dark-colored clothing to absorb heat穿著深色衣物以吸收熱量
- BTake salt tablets to prevent electrolyte loss服用鹽錠以防止電解質流失
- CDrink fluids even if not thirsty✓ 正解即使不渴也要補充水分
- DExercise outdoors during the warmest part of the day在一天中最溫暖的時段在戶外運動
長者因口渴中樞鈍化，即使脫水也不一定感到渴，因此預防熱傷害最重要的措施是「定時補充水分，而非等待口渴」。B 錯誤：鹽錠易導致高血鈉或水分滯留，非一般推薦；A 錯誤：淺色衣物反射輻射熱較佳；D 錯誤：應避免在中午炎熱時段戶外運動。
Because the thirst center in older adults is blunted, they may not feel thirsty even when dehydrated; therefore, the most important measure to prevent heat-related illness is to take fluids on a regular schedule rather than waiting until thirsty. B is wrong: salt tablets can easily cause hypernatremia or fluid retention and are not routinely recommended; A is wrong: light-colored clothing reflects radiant heat better; D is wrong: outdoor exercise during the hottest midday hours should be avoided.
台灣氣候炎熱，此教育對長者尤其關鍵；美國則較注意特定區域的熱浪（Heat Wave）警報。