Comparative study of etiological profile and outcome in acute liver failure

Background:Acute liver failure (ALF) is a clinical syndrome that is marked by the sudden loss of hepatic function in a person without chronic liver disease. Clinical and etiological profile varies with geographical area and over time. The objective of this prospective study was to determine the etiological profile and outcome of ALF and to compare it with other major studies from India and US. Methods:A total of 84 consecutive patients with a diagnosis of ALF were included in the study. The variables evaluated were demographic, signs and symptoms, biochemical parameters, etiological profile and outcome.Results:Viral hepatitis 32 (38.1%) was the most common cause of ALF but large number of the patients 30 (35.7%) had indeterminate aetiology. Among viral causes, acute hepatitis E (19.1%) was most common followed by hepatitis B (9.5%) and A (9.5%). Drug or toxic induced liver failure (17.8%) also contributed a significant proportion. Majority of the patients were male (51.9%) and the mean age was 39.48±20.11 years. Aetiology varied with other geographical area and even over time in the same area. Overall mortality was 44 (57.1%) in ALF patients, with highest mortality in indeterminate group (60%).Conclusions:Like the rest of India, viral hepatitis was the common cause of ALF but a large number of patients 30 (35.7%) had indeterminate aetiology. Overall mortality was 57.1%. Our study highlights the differences in the profile of ALF from other earlier studies in India and the west

Clinical features, laboratory characteristics and outcome of patients with drug-induced acute liver failure

Background: Acute liver failure (ALF) is a rare medical emergency. Its rapid progression and high mortality demand early diagnosis and expert management. Drug-induced ALF (DI-ALF) remains the uncommon cause of ALF in India. Clinical and etiological profile varies with geographical area and time. A prospective study of DI-ALF was carried with the aim to determine the clinical features, laboratory characteristics, outcome and hospital course.Methods: A total of 15 patients with a diagnosis of DI-ALF were included in the study. The variables evaluated were demographic, signs and symptoms, biochemical parameters [bilirubin, alanine aminotransferase (ALT), aspartate aminotransferase (AST), prothrombin time (PT), internal normalization ratio (INR) etc.], outcome and course during hospitalization.Results: Out of 15 DI-ALF patients, 12 had Anti-tuberculosis therapy (ATT) induced ALF and 3 patients had ayurvedic induced ALF. Majority of the patients were females (73.3%) and middle-aged (42.60±14.30 years). Coma grade at the time of admission showed that majority of patients (66.8%) had grade I and II encephalopathy. Depending on the pattern of liver injury, hepatocellular pattern was most common (53.3%) followed by mixed and cholestatic pattern. 40% of patients died with DI-ALF complications of which ATT induced ALF contributed 41.7%. Mean AST was more increased as compared to ALT. Development of ascites (P = 0.030) and mannitol use (P = 0.025) was significantly more common in non survived group than survived group. Length of hospital stay was significantly more in non survived group than survived group (P = 0.009).Conclusions: ATT was the class of drugs most frequently associated with DI-ALF. DI-ALF disproportionately affected middle-aged women. Most DILI ALF patients had hepatocellular injury pattern. 40% of patients died with DI-ALF complications. Development of ascites, mannitol use and length of hospital stay was significantly more in non survived group than survived group.