Cardiovascular Disease Outcomes Related to Early Stage Renal Impairment Following Liver Transplantation

Background In the general population, even mild renal disease is associated with increased cardiovascular (CV) complications. Whether this is true in liver transplant recipients (LTR) is unknown. Methods This was a retrospective cohort study of 671 LTR (2002-2012) from a large urban tertiary care center and 37,322 LTR using Vizient hospitalization data linked to the United Network for Organ Sharing. The MDRD4 equation estimated GFR (eGFR). Outcomes were 1-year CV complications (death/hospitalization from myocardial infarction, heart failure, atrial fibrillation, cardiac arrest, pulmonary embolism or stroke) and mortality. Latent mixture modeling identified trajectories in eGFR in the first LT year in the 671 patients. Results Mean(SD) eGFR was 72.1(45.7) ml/min/1.73m2. Six distinct eGFR trajectories were identified in the local cohort (n=671): qualitatively Normal-Slow Decrease (4% of cohort), Normal-Rapid Decrease (4%), Mild-Stable (18%), Mild-Slow Decrease (35%), Moderate-Stable (30%), and Severe-Stable (9%). In multivariable analyses adjusted for confounders and baseline eGFR, the greatest odds of 1-year CV complications were in the Normal-Rapid Decrease group (OR, 95% CI: 10.6, 3.0-36.9). Among the national cohort, each 5-unit lower eGFR at LT was associated with a 2% and 5% higher hazard of all-cause and CV-mortality, respectively (p

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