Kumar N, et al. - Using the 2011–14 National Inpatient Sample, researchers compared rates of acute kidney injury (AKI) and dialysis-requiring AKI (AKI-D) in transcatheter aortic valve replacement (TAVR) vs surgical aortic valve replacement (SAVR) and determined predictors of AKI and prognostic implications of AKI in all patients undergoing isolated TAVR or SAVR using validated international classification of diseases, ninth revision ICD-9 codes. A propensity-matched design, as well as multivariate logistic regression, were used. TAVR vs SAVR was found to be related to significantly lower rates of AKI and AKI-D in a large propensity-matched cohort of TAVR and SAVR procedures. In TAVR as well as SAVR, poor in-hospital outcomes were predicted by AKI and AKI-D.