病人診斷為呼吸衰竭。哪些發現顯示需要立即插管？（選所有適合的）
A client is diagnosed with Respiratory Failure. Which findings indicate the need for immediate intubation? (Select all that apply.)
- ADecreasing level of consciousness✓ 正解意識層次下降
- BPaCO2 of 50 mmHgPaCO2 為 50 mmHg
- CPaO2 of 55 mmHg despite high-flow oxygen✓ 正解即使給予高流量氧氣，PaO2 仍為 55 mmHg
- DSevere respiratory muscle fatigue✓ 正解嚴重呼吸肌疲勞
- EpH of 7.20✓ 正解pH 值為 7.20
呼吸衰竭（Respiratory Failure）的插管決策取決於病人維持呼吸道暢通（Airway）、氣體交換（Breathing）及神經狀態（Circulation/Consciousness）的能力。當病人出現意識改變、難治性低血氧、呼吸肌疲勞或嚴重代謝性/呼吸性酸中毒時，顯示其已無法維持足夠的生理恆定，必須立即進行氣管內插管（Endotracheal intubation）以提供氧氣支持與通氣輔助。
Intubation decisions in respiratory failure depend on the client's ability to maintain airway (Airway), gas exchange (Breathing), and neurological status (Circulation/Consciousness). When altered consciousness, refractory hypoxemia, respiratory muscle fatigue, or severe metabolic/respiratory acidosis occurs, the client can no longer maintain physiological homeostasis, and endotracheal intubation is required to provide oxygen support and ventilation.