Arginine Supplementation in Neonates with Necrotizing Enterocolitis

Rationale for Arginine Supplementation

• Arginine is the substrate for the production of nitric oxide, which is important for glucose homeostasis and vascular perfusion in neonates with NEC 1
• Low plasma arginine levels are observed in preterm neonates and may predispose them to NEC 1
• Arginine depletion is related to innate immune suppression that occurs in newborn models of bacterial challenge, impairing pathways critical for immune response 1

Administration Protocol

• Enteral administration of arginine supplementation is preferred when feeds are tolerated in neonates with NEC 1

Evidence Supporting Efficacy

• The ESPGHAN/ESPEN/ESPR/CSPEN guidelines provide a conditional recommendation (Level of Evidence: 1-, Recommendation Grade B) that arginine supplementation may be used for prevention of NEC in preterm infants 1, 2, 3

Monitoring and Safety Considerations

• Ensure adequate non-protein caloric intake (minimum 30-40 kcal per 1g amino acids) to guarantee amino acid utilization in neonates receiving arginine supplementation 4

Important Clinical Context

• The European Society for Pediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN) and other societies recommend bowel rest and discontinuation of enteral feeds as part of a comprehensive management approach for NEC 5, 6