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==Overview==
==Overview==
There is no specific marker or imaging test to dignose patients with Hepatorenal syndrome{HRS}. For that reason the diagnosis of HRS is based on criteria for excluding other causes of renal impairment which are seen alongwith cirrhosis.


==Laboratory Findings==
==Laboratory Findings==
* Complete blood count and differential count - [[elevated leukocytes]] due to [[infection]]
Diagnostic Criteria for HRS:
* Serum electrolytes and renal function - [[low blood sodium]]
 
* Liver function tests - elevated liver parameters (e.g [[bilirubin]], [[alkaline phosphatase]])
Major Criteria<ref name="pmid8550036">{{cite journal| author=Arroyo V, Ginès P, Gerbes AL, Dudley FJ, Gentilini P, Laffi G et al.| title=Definition and diagnostic criteria of refractory ascites and hepatorenal syndrome in cirrhosis. International Ascites Club. | journal=Hepatology | year= 1996 | volume= 23 | issue= 1 | pages= 164-76 | pmid=8550036 | doi=10.1002/hep.510230122 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8550036  }}</ref>
* [[Urinalysis]]
 
** Significant [[proteinuria]] or [[hematuria]] may be present
(i) Chronic or acute liver disease with advanced hepatic failure and portal hypertension.
** [[Increased urine specific gravity]] and [[osmolality]]
 
** [[Urine electrolytes]] - urine creatinine and sodium. Patients with low urine sodium excretions (< 5 mEq/L) are at a greater risk of developing HRS
(ii) Low GFR as indicated by serum creatinine > 1.5 mg/dL or 24 hr creatinine clearance < 40 mL/min.
* [[Prothrombin time]] ([[PT]]) - prolonged
 
* Blood [[ammonia]] levels - elevated
(iii) Absence of shock, on-going bacterial infection, and current or recent treatment with nephrotoxic drugs and absence of gastrointestinal fluid losses (repeated vomiting or intense diarrhoea) or renal fluid losses (weight loss > 500 g/day for several days in patients with ascites without peripheral oedema or 1000 g/day in patients with peripheral oedema).
* Serum [[creatinine]] - elevated
 
* [[Blood cultures]]
(iv) No sustained improvement in renal function (decrease in serum creatinine ≤ 1.5 mg/dL or increase in creatinine clearance to ≥ 40 mL/min) following diuretic withdrawal and expansion of plasma volume with 1.5 L of isotonic saline.
* [[Alpha-fetoprotein]]
 
* Blood [[albumin]] - decreased
(v) Proteinuria < 500 mg/dL and no sonographic evidence of obstructive uropathy or parenchymal renal disease.
 
Additional Criteria
 
(i) Urine volume < 500 mL/day.
 
(ii) Urinary sodium < 10 mEq/L.
 
(iii) Urinary osmolality greater than plasma osmolality.
 
(iv) Urine red blood cells < 50 per high power field.
 
(v) Serum sodium < 130 mEq/L.
 
Revised Diagnostic Criteria for HRS:
 
(i) Cirrhosis with ascites.
 
(ii) Serum creatinine > 133 μmol/L (1.5 mg/dL).
 
(iii) No improvement in serum creatinine (decrease to a level of ≤ 133 μmol/L) after ≥ 2 days with diuretic withdrawal and volume expansion with albumin; the recommended dose of albumin is 1 g/kg of body weight/day up to a maximum of 100 g/day.
 
(iv) Absence of shock.
 
(v) No current or recent treatment with nephrotoxic drugs.
 
(vi) Absence of parenchymal kidney disease as indicated by proteinuria > 500 mg/day, microscopic haematuria (>50 red blood cells per high power field), and/or abnormal renal ultrasonography.


==References==
==References==

Revision as of 17:26, 5 December 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

There is no specific marker or imaging test to dignose patients with Hepatorenal syndrome{HRS}. For that reason the diagnosis of HRS is based on criteria for excluding other causes of renal impairment which are seen alongwith cirrhosis.

Laboratory Findings

Diagnostic Criteria for HRS:

Major Criteria[1]

(i) Chronic or acute liver disease with advanced hepatic failure and portal hypertension.

(ii) Low GFR as indicated by serum creatinine > 1.5 mg/dL or 24 hr creatinine clearance < 40 mL/min.

(iii) Absence of shock, on-going bacterial infection, and current or recent treatment with nephrotoxic drugs and absence of gastrointestinal fluid losses (repeated vomiting or intense diarrhoea) or renal fluid losses (weight loss > 500 g/day for several days in patients with ascites without peripheral oedema or 1000 g/day in patients with peripheral oedema).

(iv) No sustained improvement in renal function (decrease in serum creatinine ≤ 1.5 mg/dL or increase in creatinine clearance to ≥ 40 mL/min) following diuretic withdrawal and expansion of plasma volume with 1.5 L of isotonic saline.

(v) Proteinuria < 500 mg/dL and no sonographic evidence of obstructive uropathy or parenchymal renal disease.

Additional Criteria

(i) Urine volume < 500 mL/day.

(ii) Urinary sodium < 10 mEq/L.

(iii) Urinary osmolality greater than plasma osmolality.

(iv) Urine red blood cells < 50 per high power field.

(v) Serum sodium < 130 mEq/L.

Revised Diagnostic Criteria for HRS:

(i) Cirrhosis with ascites.

(ii) Serum creatinine > 133 μmol/L (1.5 mg/dL).

(iii) No improvement in serum creatinine (decrease to a level of ≤ 133 μmol/L) after ≥ 2 days with diuretic withdrawal and volume expansion with albumin; the recommended dose of albumin is 1 g/kg of body weight/day up to a maximum of 100 g/day.

(iv) Absence of shock.

(v) No current or recent treatment with nephrotoxic drugs.

(vi) Absence of parenchymal kidney disease as indicated by proteinuria > 500 mg/day, microscopic haematuria (>50 red blood cells per high power field), and/or abnormal renal ultrasonography.

References

  1. Arroyo V, Ginès P, Gerbes AL, Dudley FJ, Gentilini P, Laffi G; et al. (1996). "Definition and diagnostic criteria of refractory ascites and hepatorenal syndrome in cirrhosis. International Ascites Club". Hepatology. 23 (1): 164–76. doi:10.1002/hep.510230122. PMID 8550036.

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