— 生理適應 · HARD · MCQ —
護理師分析病人動脈血氣（ABG）結果：pH 7.25、PaCO2 55 mmHg、HCO3 24 mEq/L。下列解釋何者正確？
A nurse is caring for a client with an arterial blood gas (ABG) showing pH 7.25, PaCO2 55 mmHg, and HCO3 24 mEq/L. Which interpretation is correct?
- ARespiratory alkalosis, partially compensated呼吸性鹼中毒，部分代償
- BRespiratory acidosis, uncompensated✓ 正解呼吸性酸中毒，未代償
- CMetabolic acidosis, fully compensated代謝性酸中毒，完全代償
- DMetabolic alkalosis, uncompensated代謝性鹼中毒，未代償
— Explanation · 中文詳解 —
pH < 7.35 為酸中毒，PaCO2 > 45 mmHg 代表呼吸性原因，HCO3 仍在正常範圍（22-26 mEq/L）表示尚未出現腎臟代償，故為未代償（uncompensated）的呼吸性酸中毒。
A pH below 7.35 indicates acidosis, a PaCO2 above 45 mmHg points to a respiratory cause, and an HCO3 still within the normal range (22-26 mEq/L) indicates that renal compensation has not yet occurred. Therefore the result represents uncompensated respiratory acidosis.
✦ 台美臨床差異
美國護理師常需依據 ABG 調整呼吸器設定或建議調整用藥；台灣通常由醫師下達調整指令。