The mask may be coupled to a continuous flow of oxygen or may be used as a partial or non-rebreathing mask.
面罩可连接至连续的氧气流，或可用作为部分地或不可再呼吸的面罩。
2
Additionally, capnography will provide information about airway patency, technical faults and adequacy of gas flow in non-rebreathing systems.
另外，二氧化碳描记还会提供通气孔开放性、技术错误和非循环系统中气流充分的信息。
3
When sampling at the level of fresh gas delivery in non-rebreathing systems. The sampling line can become obstructed by condensation drops or aspiration of any fluids.