Aim To study the relationgship and the clinical significance between plasma fibrinogen and fractional flow reserve(FFR) in coronary intermediate lesions.Methods The patients were from Department of Cardiovascular of Affiliated Hospital of Xuzhou Medical College.Their coronary artery lesions were assessed by CAG from February 2013 to November 2015,the degree of coronary artery stenosis ranged from 50% to 70%.According to the FFR,the patients were divided into two groups: the FFR≥0.8 group(n = 23) and the FFR...