Neonatal acute liver failure: a diagnosis challenge

Area of Science:

• Pediatrics
• Hepatology
• Neonatology

Background:

• Neonatal acute liver failure (NALF) is a rare but severe condition with high mortality.
• NALF presents distinct clinical and etiological features compared to acute liver failure in older children and adults.
• Coagulopathy, defined by an international normalized ratio (INR) ≥ 3, is a critical defining parameter.

Purpose of the Study:

• To highlight the unique characteristics of NALF.
• To emphasize the importance of early diagnosis for treatable causes.
• To underscore the need for prompt referral to specialized pediatric liver transplant centers.

Main Methods:

• This abstract summarizes clinical observations and etiological classifications of NALF.
• It reviews common causes including fetal alloimmune hepatitis, viral infections, metabolic disorders, and hemophagocytic lymphohistiocytosis.
• Diagnostic criteria and management pathways are discussed.

Main Results:

• NALF is characterized by coagulopathy (INR ≥ 3).
• Key causes include fetal alloimmune hepatitis, infections, metabolic disorders, and HLH.
• A subset of NALF cases are treatable with early diagnosis.

Conclusions:

• NALF requires distinct diagnostic and management approaches compared to adult acute liver failure.
• Prompt identification of treatable causes and referral for potential liver transplantation are vital.
• Specialized pediatric liver transplant facilities are essential for managing NALF.