及时、准确诊断和排除肺血栓栓塞症(PTE)十分重要。由于PTE临床表现宽而广,常规筛选方法缺乏特异性,确定诊断方法因条件、设备和创伤性而受到一定限制,使临床医师(尤其基层医院)在PTE的诊断和鉴别诊断过程中遇到困难。近年来国外多项大规模以循证医学为基础的研究和国内PTE规范 Timely and accurate diagnosis and exclusion of pulmonary thromboembolism (PTE) is very important. Due to the broad and broad clinical manifestations of PTE, the lack of specificity of conventional screening methods, to determine the diagnostic methods due to conditions, equipment and traumatic limitations, so that clinicians (especially grass-roots hospitals) in the diagnosis and differential diagnosis of PTE difficulties . In recent years a number of large-scale foreign evidence-based medicine-based research and domestic PTE norms