Abstract:Objective To investigate the role of RAAS inhibitors in contrast agent-induced acute kidney injury (CI-AKI) in patients with acute coronary syndrome complicated with acute heart failure undergoing percutaneous coronary intervention (PCI). Methods A retrospective analysis was made of 504 patients with acute coronary syndrome complicated with acute heart failure who underwent successful PCI and their renal function was reexamined 24 to 48 hours after operation. According to the presence or absence of CI-AKI and the presence or absence of RAAS inhibitors, the indicators were compared and the meaningful observations were analyzed by logistic regression analysis. Results CI-AKI occurred in 144 patients with acute heart failure at admission, with an incidence of 28.6%. The proportion of RAAS inhibitors in the CI-AKI group, hypertension and diabetes had statistical differences between the CI-AKI group and the non-CI-AKI group (P?0.05); there were statistical differences in the cardiac function indexes (LVEF, LVEDD, PAP, NT-proBNP, Hs-CRP and Hcy) between the CI-AKI group and the non-CI-AKI group (P?0.05). The above meaningful indicators were introduced into logistic analysis, then we found that the effect of RAAS inhibitors on CI-AKI disappeared. Hypertension, NT-proBNP, Hcy, Hs-CRP, LVEF and PAP were still risk factors for CI-AKI. Conclusion Routine use of RAAS inhibitors does not increase the risk of CI-AKI in patients with acute coronary syndrome and acute heart failure requiring PCI treatment.