Management of Hepatic Encephalopathy

Diagnosis and Assessment

The American Association for the Study of Liver Diseases recommends that ammonia measurement cannot definitively diagnose hepatic encephalopathy, but a normal value casts doubt on the diagnosis, with a study published in Liver International 3
Brain imaging should be performed only for differential diagnosis in patients with suspected hepatic encephalopathy, particularly during the first episode, as suggested by the European Association for the Study of the Liver and Praxis Medical Insights 3, 1
The animal naming test can be used to detect covert hepatic encephalopathy, with a cut-off of 20 animal names in 1 minute, according to Liver International and Praxis Medical Insights 3, 2
Severity of hepatic encephalopathy should be classified using a grading system (I-IV) to guide management decisions, as recommended by Praxis Medical Insights 1, 2

Identifying and correcting precipitating factors is crucial, resolving up to 90% of cases, according to Praxis Medical Insights 1, 2
Lactulose is the first-line treatment for hepatic encephalopathy, with an initial dose of 25 ml orally every 12 hours, and should be titrated to achieve 2-3 soft stools per day, as recommended by Praxis Medical Insights 1, 2
Rifaximin is recommended as second-line or add-on treatment for patients with recurrent episodes despite lactulose use, with a dosage of 550 mg orally twice daily, according to Praxis Medical Insights 1, 2

Monitor sodium levels closely, as hyponatremia is an independent risk factor for hepatic encephalopathy, as suggested by Praxis Medical Insights 1
Perform frequent mental status checks with transfer to ICU if level of consciousness declines, according to Praxis Medical Insights 2
Patients with grade III/IV encephalopathy require intubation for airway protection, as recommended by Praxis Medical Insights 4
Secondary prophylaxis with lactulose should be continued after the first episode of overt hepatic encephalopathy, and Rifaximin is recommended as an adjunct to lactulose after recurrent episodes, according to Praxis Medical Insights 1, 2
Liver transplantation evaluation should be considered for patients with recurrent or intractable hepatic encephalopathy, as suggested by Praxis Medical Insights 1, 2