老年人吸入性肺炎的发病率和死亡率均比较高,文献报告本病发病率为33％(尸解),死亡率一般为40～60％。死亡率高低与吸入物质量、年龄和基础疾病有关。一、易发因素和诱因:老年人之所以易发生吸入性肺炎,与老年性生理、病理等变化有关。如脊柱后突,膈肌、肋间肌与腹肌萎缩,胸廓弹性减弱,使咳 The incidence and mortality of aspiration pneumonia in the elderly are relatively high, the incidence of the disease reported in the literature was 33% (autopsy), the mortality rate is generally 40 to 60%. The level of mortality is related to the quality of inhalation, age and underlying diseases. First, the risk factors and incentives: The reason why the elderly prone to aspiration pneumonia, and aging, physical, pathological changes. Such as kyphosis, diaphragm, intercostal muscle and abdominal atrophy, chest elasticity weakened, cough