Correlation between C-reactive Protein to Albumin and Coronary Collateral Circulation in Patients with Unstable Angina Pectoris

Background Coronary collateral circulation (CCC) reduces the degree of myocardial ischemia and improves prognosis of patients with severe coronary artery stenosis, but CCC development varies significantly among different patients. The influencing factors of CCC development still remain clear, but the increase of inflammation response and inflammatory markers is associated with CCC. The C-reactive protein to albumin ratio (CAR) is a newly reported indicator of inflammation, which has been shown in several studies to be superior to C-reactive protein (CRP) and albumin (ALB) in reflecting cardiovascular inflammation. At present, there are few studies on the correlation between CAR level and CCC development. Objective To investigate the correlation between CAR and CCC development in unstable angina pectoris (UAP) patients. Methods One hundred and thirty-five UAP patients who underwent percutaneous coronary intervention during their hospitalization in the Cardiology Department of the First Affiliated Hospital of S