A 经各种治疗无效,精神神经症状加重 B
虽然吸入高浓度氧,PaC0<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240405/13343873_0.gif">仍低于60mmHg C
慢性CO<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240405/13343873_0_1.gif">潴留 D
呼吸过慢,仅为正常的1/2 E
呼吸骤停或即将停止