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Hepatorenal syndrome without avid sodium retention
Hepatology (Baltimore, Md.)
|March 1, 1986
Summary
A urinary sodium concentration above 10 mmoles per liter can occur in hepatorenal syndrome, challenging its diagnostic utility. This finding is crucial for understanding renal impairment in liver disease patients.
Area of Science:
- Nephrology
- Hepatology
- Internal Medicine
Background:
- Hepatorenal syndrome (HRS) diagnosis in liver disease often relies on urinary sodium concentration [U(Na)] < 10 mmoles/liter.
- A subset of HRS patients exhibit U(Na) > 10 mmoles/liter, complicating differential diagnosis.
Purpose of the Study:
- To investigate the clinical characteristics of hepatorenal syndrome patients with elevated U(Na).
- To compare these patients with those having low U(Na) to identify differentiating factors.
Main Methods:
- Retrospective case-control study comparing two groups of HRS patients.
- Analysis of clinical features, hepatic/renal status, and laboratory values including U(Na), serum electrolytes, and BUN/creatinine ratio.
Main Results:
- The high U(Na) group (mean 24 mmoles/liter) showed less ascites/edema and higher serum sodium/chloride than the low U(Na) group (mean 3.7 mmoles/liter).
- The low U(Na) group had a significantly higher BUN/creatinine ratio (13.8 vs. 10.1), indicating greater renal impairment.
- Both groups had similar severity of alcoholic hepatitis.
Conclusions:
- Elevated U(Na) can be present in HRS, particularly in patients with alcoholic hepatitis and less fluid overload.
- Urine and serum markers, alongside clinical presentation, are vital for diagnosing HRS in complex liver disease cases.