Analysis of Risk Factors and Intervention Strategies for Acute Kidney Injury After Cardiac Valve Replacement.

Objective: To investigate the risk factors and intervention strategies for the development of acute kidney injury (AKI) after cardiac valve replacement with extracorporeal circulation. Methods: Retrospective analysis of the clinical data of a total of 106 patients diagnosed with heart valve disease and undergoing extracorporeal circulation heart valve replacement surgery from January 2021 to December 2021 in the Department of Cardiac and Major Vascular Surgery of our hospital. The two groups were divided into AKI and non-AKI groups according to whether acute kidney injury occurred after surgery, and the preoperative, intraoperative and postoperative clinical data were compared. Single-factor analysis and multi-factor logistic regression analysis were used to explore the risk factors for acute kidney injury after extracorporeal heart valve replacement, and to improve the prognosis by giving kidney function protection strategies as early as possible. Results: Univariate analysis showed that age, preoperative blood creatinine >130umol/L, LVEF <45%, presence of subacute infective endocarditis (SIE), concurrent coronary artery bypass grafting (CABG), time to extracorporeal circulation, time to surgery, MAP <70mmHg, urine output <0.5mL/(kg-h), pulmonary infection, low cardiac output, and bacteraemia were risk factors for postoperative AKI. Multi-factor regression analysis showed that preoperative blood creatinine >130umol/l, LVEF <45%, combined infective endocarditis, extracorporeal circulation time >2h, intraoperative and postoperative hypotension, low cardiac output, and postoperative bacteremia were independent risk factors for postoperative AKI. Conclusion: Active intervention strategies in the perioperative period can reduce the occurrence of postoperative AKI and improve patient prognosis.