Blair D N, Coppage L, Shaw C
J Thorac Imaging. 1986 Mar;1(2):23-35. doi: 10.1097/00005382-198603000-00005.
Asthma is a common disease characterized by hyperreactivity of airways to a variety of stimuli. Efficacy studies have shown that while in adults there is no positive predictive value between radiographic abnormalities and certain clinical parameters, in children there may be some correlation with age and the presence of rales. In the Yale-New Haven Emergency Service it is suggested that certain clinical criteria be used to determine which patients receive chest radiographs. A retrospective review of 563 adult asthmatics who presented to the Yale Emergency Room revealed that one third of the patients were radiographed; 50% of these were over 50 years of age, and the overall incidence of radiographic abnormalities that would change patient management was only 3%. Radiographic findings have been categorized into two groups, uncomplicated and complicated asthma, depending on whether bronchodilators will effect a response.
哮喘是一种常见疾病，其特征为气道对多种刺激具有高反应性。疗效研究表明，虽然在成年人中，影像学异常与某些临床参数之间不存在阳性预测价值，但在儿童中，可能与年龄及啰音的存在存在一定相关性。在耶鲁 - 纽黑文急救服务中心，建议使用某些临床标准来确定哪些患者需要进行胸部X光检查。对563名前往耶鲁急诊室就诊的成年哮喘患者进行的回顾性研究发现，三分之一的患者接受了X光检查；其中50%年龄超过50岁，而会改变患者治疗方案的影像学异常的总体发生率仅为3%。根据支气管扩张剂是否会产生反应，影像学表现被分为两组，即单纯性哮喘和复杂性哮喘。
