肺炎是冬春季节的一种常见病和多发病。肺炎病死率占呼吸系统急性感染病死率的75.5%,特别在老年人直接死因中占有重要位置,因此,必须加强冬春季老年人肺炎的防与冶。随着年龄的增长,老年人呼吸道黏膜上皮和黏液腺发生退行性改变,抵抗能力降低;同时,老年人肺组织收缩能力减退,肺泡数减少,壁变薄;加之胸部运动受限,通气功能降低等,这些都不同程度引起老年人通气和气体 Pneumonia is a common disease and frequently-occurring disease in winter and spring. The pneumonia mortality rate accounts for 75.5% of the acute respiratory infection mortality rate, especially in the direct cause of death in the elderly occupy an important position, therefore, we must strengthen winter and spring prevention and treatment of pneumonia in the elderly. With age, the elderly respiratory mucosal epithelial and mucinous glands degenerative changes, decreased resistance; the same time, elderly lung tissue shrinkage decreased alveolar number, wall thinning; coupled with limited chest movement, ventilation decreased Etc., these are all caused by varying degrees of ventilation and gas in the elderly