Clinical Research Directory

Inclusion Criteria: * All patients \>18 years old that were hospitalized between April 1st 2019 and April 1st 2023 who either presented with HRS-AKI or developed a diagnosis of HRS during the hospital course. HRS-AKI will be defined based on the ICA criteria, described below: 1. Presence of cirrhosis, acute liver failure, or acute-on-chronic liver failure 2. An increase in serum Cr of ≥0.3 mg/dL within 48 hours or ≥50% from baseline value and/or urinary output ≤0.5 mL/kg of body weight for ≥6 hours (requires use of a urinary catheter) 3. No full or partial response for ≥2 days of diuretic withdrawal and volume expansion with albumin (dosed at 1 g/kg of body weight/day) 4. Absence of shock 5. No current or recent treatment with nephrotoxic drugs 6. Absence of parenchymal renal disease 7. Suggestion of renal vasoconstriction based on FENa \<0.2% Exclusion Criteria: * 1\. HRS-AKI patients \<18 years of age 2. All patients hospitalized between April 1st 2019 and April 1st 2023 without a diagnosis of HRS-AKI.