慢性阻塞性肺疾患(COPD)常并发肺动脉高压(以下简称肺高压),而肺高压常是COPD患者右室增大和右心衰竭的主要原因,因此对这类患者辨明是否有肺高压存在是十分重要的。已往研究表明:原发性肺高压或继发于二尖辦狭窄的肺高压可以从常规胸片加以辨识,然而在普通胸片上识别COPD伴有的肺高压尚缺乏全面的研究。最近报导:测量右肺动脉下叶主支气管宽度对COPD伴肺高压的诊断有一定的帮助。本文对COPD病人后前位(PA)胸片的各种测量 Chronic obstructive pulmonary disease (COPD) often complicated by pulmonary hypertension (hereinafter referred to as pulmonary hypertension), and pulmonary hypertension often COPD patients with right ventricular enlargement and right heart failure, the main reason for such patients to identify whether there is a pulmonary hypertension is very important. Previous studies have shown that primary pulmonary hypertension or pulmonary hypertension secondary to secondary mitral stenosis can be identified from routine chest radiographs. However, there is a lack of comprehensive research on the identification of pulmonary hypertension associated with COPD on conventional chest radiographs. Recently reported: measurement of the right bronchial artery of the main bronchial width of COPD with pulmonary hypertension diagnosis will be helpful. In this paper, various measurements of posterior (PA) chest radiographs of patients with COPD