Predictors of Systolic Heart Failure and Mortality Following Orthotopic Liver Transplantation: a Single-Center Cohort

Abstract

ObjectivesThe purpose of this study was to identify risk factors that may predict heart failure with reduced ejection fraction (HFrEF) following orthotopic liver transplantation (OLT) and associated mortality. BackgroundHFrEF following OLT is a poorly understood phenomenon, reported in 3% to 7% of transplanted patients. MethodsThis is a retrospective analysis of 176 consecutive patients who underwent OLT from 2010 to 2017. Multivariate logistic regression was used to identify associations between cardiovascular risk factors and perioperative variables with post-OLT HFrEF, defined as reduction in left ventricular ejection fraction of at least 10% and left ventricular ejection fraction less than or equal to 40% with acute heart failure symptoms. Multivariate cox proportional hazards regression (with inverse probability weighting by propensity scores) was used to evaluate effects of HFrEF on 1-year mortality. ResultsOf the176 patients, 14% developed HFrEF with a median of 5 days. History of heart failure (OR 10.99, 2.15–56.09; P = .04) and intraoperative transfusion of greater than 11 units of packed red blood cells (OR 3.377, 1.025–11.13; P = .045) were associated with increased incidence of HFrEF. Pre-transplant hemoglobin greater than 8.5 g/dL (OR 0.252, CI 0.0954- 0.665; P = .05) was protective against HFrEF. Thirty-three percent of HFrEF group died within 1 year (HR 7.36, 2.57–21.12; P < .001). ConclusionsThe incidence of acute HFrEF post-OLT is 14% and is associated with a 7-fold increase in 1-year mortality. Cirrhotic cardiomyopathy and stress-induced cardiomyopathy maybe the underlying mechanisms. Our study identified risk factors associated with post-OLT HFrEF and should provide additional guidance for risk stratification of patients undergoing OLT.