老年急性间质性肺炎(AIP)是一种病因未明、起病急骤、病情危重、以肺部弥漫性浸润,并迅速发展为呼吸衰竭力特征的肺疾病.病死率高,预后不佳.现有3例报告如下.临床资料男2例,女1例,年龄分别为65、62、72岁,为我院1991～1999年住院患者,病程5～8个月,临床表现为上呼吸道感染后,出现咳嗽、咳痰、干咳或咳少量粘痰,随后出现气急,呼吸困难及缺氧症状,体检呼吸频率加快,28～30次/分,紫绀,两下肺可闻中小湿性罗音,2例伴有Veler罗音,该罗音犹如血压计尼龙袖带开启时的声音.实验室检查,均见外周血白细胞数升高,3例患者红细胞沉降率增快,达30～70mm/h,肺功能检查3例为限制性通气功能障碍, Elderly acute interstitial pneumonia (AIP) is a lung disease of unknown etiology, acute onset, critical illness, diffuse lung infiltration, and rapid development of respiratory failure characteristics. High mortality and poor prognosis. There are 3 cases reported as follows. Clinical data of 2 males and 1 females, aged 65,62,72 years of age, for our hospital from 1991 to 1999 inpatients, duration of 5 to 8 months, the clinical manifestations of upper respiratory tract infection , There cough, sputum, dry cough or cough a small amount of phlegm, followed by shortness of breath, difficulty breathing and hypoxia, physical examination respiratory rate, 28 to 30 beats / min, cyanosis, Cases accompanied by Veler rales, the rales sound like a sphygmomanometer when the nylon cuffs open.Laboratory examination, were seen in the peripheral blood leukocyte count increased, 3 cases of erythrocyte sedimentation rate increased to 30 ~ 70mm / h, 3 cases of pulmonary function tests for restrictive ventilation dysfunction,