老年院内获得性肺炎,是指在医院内病原菌对老年人下呼吸道产生的肺炎,这种感染在患者入院时不存在,也不处于感染潜伏期,而是住院48h后在医院内发生的。随着我国人口的老龄化,老年住院患者的逐渐增多,老年人医院获得性肺 Acquired pneumonia in the elderly refers to the pneumonia in the hospital caused by pathogenic bacteria in the lower respiratory tract of the elderly. This infection does not exist at the time of admission and is not in the latent period of infection. Rather, it occurs in the hospital 48h after hospitalization. With the aging population in our country, the number of hospitalized elderly patients is gradually increasing, and the elderly hospital-acquired lungs