Hypoxic hepatitis - epidemiology, pathophysiology and clinical management

Area of Science:

• Hepatology
• Critical Care Medicine
• Pathophysiology

Background:

• Hypoxic hepatitis (HH), also known as ischemic hepatitis or shock liver, is a frequent cause of acute liver injury, affecting up to 10% of ICU patients.
• It is characterized by centrilobular liver cell necrosis and elevated serum aminotransferases, occurring in patients with cardiac, circulatory, or respiratory failure.
• HH is associated with increased mortality, particularly in patients receiving vasopressor therapy.

Purpose of the Study:

• To provide an updated review of hypoxic hepatitis.
• To cover the epidemiology, pathophysiology, diagnosis, and therapeutic strategies for HH.

Main Methods:

• Literature review and synthesis of current research on hypoxic hepatitis.
• Analysis of epidemiological data, underlying causes, and clinical manifestations.
• Evaluation of diagnostic approaches and therapeutic interventions.

Main Results:

• The primary causes of HH include low cardiac output and septic shock, often with multifactorial etiology.
• Complications of HH encompass hypoglycemia, hepatopulmonary syndrome leading to respiratory insufficiency, and hyperammonemia.
• HH is reversible upon successful treatment of the underlying disease, with no specific therapies currently established for hepatic function improvement.

Conclusions:

• Early recognition of HH and its underlying causes is critical for patient prognosis.
• Prompt initiation of therapy targeting the root cause is essential.
• Further research into specific therapies to improve hepatic function in HH patients is warranted.