吸入性肺炎主要是指口鼻咽部的分泌物和胃、食管的反流物误吸入下呼吸道,达肺泡及终末呼吸道,而引发的肺部炎性病变。吸入是病原微生物进入下呼吸道的最常见途径。有关统计资料表明,吸入性肺炎在老年性肺炎中占很大比例,其发病率是青年人的10~20倍,80岁以上的老年人中,肺炎为第一死因,90岁以上的老年人中,有一半死于老年性肺炎,而吸入性肺炎又是老年肺炎中一个常见类型,主要由口腔 Aspiration pneumonia mainly refers to the mouth and nasopharyngeal secretions and stomach, esophageal reflux fluid into the lower respiratory tract by mistake, up to the alveolar and terminal respiratory tract, which led to the inflammatory lesions of the lungs. Inhalation is the most common route for pathogenic microorganisms to enter the lower respiratory tract. Relevant statistics show that aspiration pneumonia accounts for a large proportion of pneumonia in the elderly, the incidence rate is 10 to 20 times that of young people, over 80 years of age, pneumonia is the first cause of death, over 90 years of age , Half died of senile pneumonia, and aspiration pneumonia is a common type of pneumonia in the elderly, mainly by the mouth