Postoperative hyperinflammation and recovery challenges in necrotizingenterocolitis.

Abstract

Necrotizing enterocolitis (NEC) remains one of the most devastating gastrointestinal emergencies in neonates, particularly affecting premature infants with immature intestinal, immune and microvascular systems. While surgical intervention is often lifesaving in severe NEC, the postoperative period introduces distinct challenges that critically influence survival and long-term outcomes. This review examines postoperative hyperinflammation as a central driver of morbidity following surgical NEC. Despite resection of necrotic bowel, many infants experience persistent systemic inflammation characterized by dysregulated innate immune activation, excessive cytokine release and sustained gut barrier dysfunction. Key mediators including tumor necrosis factor-alpha (TNF-α), interleukin (IL)-6, IL-1β and IL-8 contribute to endothelial injury, capillary leak, hemodynamic instability and multiorgan dysfunction. Ongoing intestinal permeability and microbial translocation perpetuate inflammatory signaling, delaying mucosal healing and predisposing infants to recurrent NEC, sepsis and short bowel syndrome. Clinically, postoperative hyperinflammation manifests as systemic inflammatory response syndrome, coagulopathy, feeding intolerance, impaired wound healing and neurodevelopmental injury. Recovery is frequently prolonged by nutritional compromise, dependence on parenteral nutrition and recurrent infections, which further amplify inflammatory stress. Current management remains largely supportive, focusing on optimization of nutrition, infection prevention and multidisciplinary care. Emerging immunomodulatory and microbiome-based therapies remain investigational. Postoperative hyperinflammation remains a difficult and complex sequelae of NEC and future investigation is needed to improve long-term outcomes.