【摘 要】 气管切开是临床抢救危重症患者的重要技术，但由于患者解剖结构的改变，气道黏膜屏障受损，其防御能力、气道分泌物pH值不断降低，使得细菌容易黏附在气道管壁上，最终发生呼吸道感染。故及时进行气道湿化，可有效改善患者呼吸功能，从而预防肺部感染的发生。本文现将气管切开患者呼吸道感染中气道湿化的应用现状及进展进行简要综述。

    【关键词】 气管切开;气道湿化;呼吸道感染

    [Abstract] Tracheotomy is an important technique in clinical rescue of critical patients. However， due to the change of anatomical structure of patients， the airway mucosal barrier is damaged， the defense ability and the pH value of airway secretion are constantly reduced， which makes bacteria easy to adhere to the airway wall ......