Fontan-Associated Liver Disease: Pathophysiology, Staging, and Management

Area of Science:

• Cardiology
• Hepatology
• Pediatric Surgery

Background:

• Fontan-associated liver disease (FALD) arises from altered hemodynamics and venous congestion post-Fontan procedure.
• Histological liver changes in FALD resemble but are not identical to other cardiac liver diseases.
• The natural history and long-term outcomes of FALD are not well-established.

Purpose of the Study:

• To review the pathophysiology, clinical manifestations, and management of Fontan-associated liver disease.
• To highlight the importance of staging liver damage in Fontan survivors.
• To emphasize the need for improved screening and management strategies for FALD.

Main Methods:

• Literature review of studies on Fontan-associated liver disease.
• Analysis of histological findings and clinical outcomes in Fontan patients.
• Discussion of current understanding of FALD pathophysiology and complications.

Main Results:

• FALD involves abnormal hemodynamics and systemic venous congestion.
• Common complications include ascites, esophageal varices, malnutrition, and encephalopathy.
• Fontan survivors have an elevated risk of hepatocellular carcinoma.

Conclusions:

• Adequate staging of liver damage in Fontan patients is essential.
• Early identification and management of FALD can improve patient outcomes.
• Further research is needed to establish the natural history and optimal screening strategies for FALD.