近年来 ,医院获得性感染的发病率逐年增高 ,而医院获得性肺炎 (ＮＰ)是获得性感染中发病率最高的一种疾病。由于老年人多有免疫功能低下 ,各种生理反射迟钝 ,因而成为医院获得性肺炎的易感人群。对本院 1996年～ 1998年 12月收治的老年感染性疾病患者中并发ＮＰ 5 2例进行回顾 In recent years, the incidence of hospital-acquired infections has increased year by year, and hospital-acquired pneumonia (NP) is the most prevalent in acquired infections. As the elderly have more immune dysfunction, a variety of physiological reflex slow, and thus become a susceptible group of hospital-acquired pneumonia. In our hospital from 1996 to December 1998 admitted to patients with senile infectious diseases concurrent NP5 2 cases were reviewed