This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Hepatorenal syndrome characterised by all except: 
Select and explain. 
A. No proteinuria, B. Normal intrinsic' kidney., C. Liver failure, D. Urine osmolality less than plasma osmolality
D: Urine osmolality less than plasma osmolality
Answer: D: Urine osmolality less than plasma osmolality 
Explanation: Renal failure consequent on liver failure can occur in cirrhosis. The kidney's they are intrinsically normal and renal failure is thought to result from altered systemic blood flow including diminished renal blood flow:
• It occurs in advanced cirrhosis at most alwaysand ascites
 
Absence of proteinuria or abnormal urinary sediment.
 
Urine sodium excretion below lOmmol/day.
 
Serum Na t- concentration < 130 m Eq/L?
 
Urinary osmolality greaterthan
 
plasma osmolality.
 
Urine volume < 500 ml/day.