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Hepatorenal Syndrome
Aka: Hepatorenal Syndrome
See AlsoCirrhosis
DefinitionRenal Failure due to Hepatic Cirrhosis Intrinsic renal disease absent
EpidemiologyLess common in Primary Biliary Cirrhosis Incidence in Cirrhosis with Ascites One year 18% Five years: 39%
PathophysiologyArterial vasodilation of splanchnic circulation Results in underfilling of arterial circulation
TypesType I Hepatorenal SyndromeAssociated with Spontaneous Bacterial Peritonitis Occurs in 25% of patients with SBP Rapid deterioration of Renal Function Serum Creatinine doubles to >2.5 mg/dl orCreatinine Clearance <20 ml/minute SurvivalWithout treatment: <2 weeks (median) With Treatment: 10 weeks Type II Hepatorenal SyndromeAssociated with Diuretic -resistant Ascites Renal Function declines moderatelySerum Creatinine >1.5 mg/dlSurvival: 3-6 months (median)
DiagnosisMajor CriteriaLiver failure with Portal Hypertension Decreased Glomerular Filtration Rate (GFR)Serum Creatinine >1.5 mg/dl orCreatinine Clearance < 40 ml/min No alternative causes of Acute Renal Failure No nephrotoxins No shock or Sepsis Urine Protein <500 mg/dlNo parenchymal renal disease by renal ultrasound No ureteral obstruction by renal ultrasound Renal Failure refractory to measuresDiuretic s withdrawnVolume expansion: 1.5 Liters Normal Saline Minor CriteriaUrine volume <500 ml/day Urine Sodium <10 meq/LiterUrine Osmolality increased over plasma osmolalityUrine Red Blood Cell s <50 per hpf Serum Sodium <130 mEq/L
ManagementHemodialysis Avoid Nephrotoxins Midodrine PO with Octreotide IVTarget: Increase Mean Arterial Pressure >15mmHg Dopamine 2-4 mcg/kg/min IV