Subacute hepatic failure; is it a distinct entity?

Area of Science:

• Hepatology
• Virology
• Gastroenterology

Background:

• Subacute hepatic failure (SHF) is a distinct clinical entity.
• Its prevalence, clinical profile, and prognosis require further elucidation.
• Differentiating SHF from acute liver failure (ALF) and chronic liver failure (CLF) is crucial.

Purpose of the Study:

• To determine the relative prevalence of SHF compared to ALF and CLF.
• To characterize the clinical, biochemical, and morphological features of SHF.
• To investigate the etiological role of Hepatitis B virus (HBV) and identify prognostic predictors.

Main Methods:

• Prospective study of 33 patients with SHF over 3 years.
• Defined SHF by persistent jaundice (>8 weeks) and ascites in acute viral hepatitis presentations.
• Clinical assessment, liver function tests, and liver histology were performed.

Main Results:

• SHF accounted for a notable proportion of liver failure cases in India.
• Common features included jaundice, ascites, and edema; encephalopathy and bleeding were infrequent.
• Submassive and bridging necrosis were characteristic histological findings.
• Hepatitis B virus (HBV) was implicated in 42% of cases.
• Mortality rate was high at 66%.

Conclusions:

• SHF is a highly fatal liver condition prevalent in India.
• HBV is a significant etiological factor.
• Early identification and understanding of prognostic factors are essential for managing this severe liver disease.