Invasive Hemodynamic Predictors of Renal Outcomes after Percutaneous Coronary Interventions

OBJECTIVES: To determine the association of right heart invasive hemodynamic parameters with post-percutaneous coronary intervention (PCI) acute kidney injury (AKI). BACKGROUND: AKI after PCI is associated with a high morbidity and mortality. Various mechanisms are implicated in AKI after PCI. However, the association between filling pressures and invasive hemodynamic measures of right heart function with post-PCI AKI has not been described. METHODS: This is a retrospective single-center analysis of patients of who underwent simultaneous right heart catheterization (RHC) and left heart catheterization with PCI at the Einstein Medical Center, Philadelphia, between January 2010 and December 2016. We included patients who had hemodynamic parameters from the concomitant RHC as well as measurements of kidney function up to 1 month after the procedure. We excluded patients with ST elevation myocardial infarction, end-stage renal disease, cardiogenic shock, and PCI with a need for mechanical circulatory device support. Multivariate linear regression analysis was used to analyze the association between the various right ventricular hemodynamic parameters and eGFR within 1 week and 1 month after catheterization after adjusting for age, race, gender, diabetes and hypertension, contrast volume, cardiac index, and baseline eGFR. RESULTS: Right atrial (RA) pressure was inversely associated with eGFR within 1 week (β = -1.66; 95% CI -3.06 to -0.25; p = 0.021) and 1 month after PCI (β = -2.14; 95% CI -4.08 to -0.20; p = 0.031). CONCLUSION: Elevated RA pressure is associated with a worsening kidney function after cardiac catheterization and PCI.