医院获得性肺炎(Nosocomial Pneumonia,NP),占全部医院获得性感染的10～20％,一般指病人入院后48～72小时后才发生的下呼吸道感染。预后差,死亡率高。现就我们近来遇到的12例总结如下。临床资料一般资料,年龄22～78岁。其原发基础疾病有:慢性阻塞性肺疾病(COPD)4例,肺癌2例,脑瘤术后2例,心脏病、SLE、血小板减少性紫瘢及急性酒精中毒各1例。症状、体征及胸部X线检查:本组患者分别于住院后4～36天发生的呼吸道症状或 Nosocomial pneumonia (NP), which accounts for 10-20% of all hospital-acquired infections, generally refers to lower respiratory tract infections that occur 48-72 hours after admission to a patient. Poor prognosis, high mortality. Now we encounter 12 cases are summarized below. General information on clinical data, aged 22 to 78 years. The primary underlying diseases are: 4 cases of chronic obstructive pulmonary disease (COPD), 2 cases of lung cancer, 2 cases of brain tumor after surgery, heart disease, SLE, thrombocytopenic purpura and acute alcoholism in 1 case. Symptoms, signs and chest X-ray examination: the group of patients were in hospital after 4 to 36 days of respiratory symptoms or