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  • Title: Clinical Presentation and Multifactorial Pathogenesis of Necrotizing Enterocolitis in the Preterm Infant.
    Author: Andrews RE, Coe KL.
    Journal: Adv Neonatal Care; 2021 Oct 01; 21(5):349-355. PubMed ID: 33958518.
    Abstract:
    BACKGROUND: Necrotizing enterocolitis (NEC) is a serious infection of the bowel wall induced by multiple pathological factors, which include inflammation and tissue invasion with bacteria known to cause severe infections. NEC is now understood to be several disease processes under one umbrella. The most common form occurs in premature infants and can exert significant impacts to preterm morbidity and mortality. PURPOSE: This narrative review describes current knowledge of the clinical presentation and pathophysiology of NEC in premature infants. METHODS/SEARCH STRATEGY: A review of literature was conducted using key words in PubMed and CINAHL with preference for years 2015 to 2020. FINDINGS/RESULTS: Several converging and interrelated factors including characteristics of the premature intestinal mucosa, gut ischemia, dysregulation of the microbiome, enteral feeding, and genetics create an environment where NEC is more likely to occur. IMPLICATIONS FOR PRACTICE: To recognize and diagnose NEC in preterm infants, an understanding of underlying factors that create an optimal environment for disease acquisition in premature infants is essential. IMPLICATIONS FOR RESEARCH: Prevention of NEC remains the most important strategy for decreasing morbidity and mortality. Multiple areas of potential study exist for NEC pathophysiology including those that consider how the factors discussed in this review are interrelated and how each particular pathway can be optimized to prevent the onset of NEC.
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