Objectives: Using a large nationally representative database, we aimed to examine risk factors for acute kidney injury (AKI) and its association with outcomes in patients undergoing percutaneous left atrial appendage closure (LAAC).Background: Previous small-scale studies have reported poor outcomes with AKI following percutaneous LAAC.
Methods:We queried the Nationwide Readmission Database to identify LAAC procedures performed from 2016 to 2017. Multivariable logistic and linear regression models were used to identify risk factors for AKI and determine the association between AKI and clinical outcomes. The primary outcome of interest was in-hospital mortality.Results: Of 20,703 patients who underwent LAAC during the study period, 1,097(5.3%) had a diagnosis of AKI. Chronic kidney disease, non-elective admission, coagulopathy, weight loss, prior coronary artery disease, heart failure, diabetes mellitus, and anemia were independently associated with an increased risk of AKI after LACC. In patients undergoing LAAC, AKI was associated with an increased risk of in-hospital mortality (adjusted odds ratio [aOR], 16.01; 95% CI,