Hepatorenal Syndrome in Cirrhosis: A Comprehensive Review Authors: Elisa Pose, Salvatore Piano, Adrià Juanola, Pere Ginès Journal: Gastroenterology 2024;166:588–604 Date: March 22, 2025
Introduction to HRS Definition Kidney dysfunction in advanced cirrhosis Key Features Reduced GFR, reversible with treatment Objective Review epidemiology, pathophysiology, diagnosis, management
Types of HRS HRS-AKI Acute, severe, often infection-triggered HRS-CKD Chronic, progressive kidney impairment NAKI Emerging term for non-AKI kidney dysfunction
Epidemiology of AKI in Cirrhosis Prevalence 27%–53% in hospitalized patients Acquisition Community vs. Hospital-acquired AKI Severity Majority mild-to-moderate (Stage 1)
AKI Staging at Diagnosis 69% Stage 1 19% Stage 2 13% Stage 3
Main Etiologies of AKI Hypovolemia ~50% (fluid losses) ATN-AKI ~25% (tubular necrosis) HRS-AKI ~25% (circulatory dysfunction)
Risk Factors for HRS-AKI Primary Trigger Bacterial infections (SBP, 30% incidence) Other Factors Large-volume paracentesis, GI bleeding Prevention Albumin reduces risk in SBP
Prognosis of AKI Stage 90-day Survival Stage 1A 84% Stage 1B 56% Stage 2 48% Stage 3 43%
Prognosis by Etiology Hypovolemia Best prognosis Most responsive to intervention HRS-AKI Intermediate prognosis Requires specialized treatment ATN-AKI Worst prognosis Limited reversal options