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  • Title: Association of H2-blocker therapy and higher incidence of necrotizing enterocolitis in very low birth weight infants.
    Author: Guillet R, Stoll BJ, Cotten CM, Gantz M, McDonald S, Poole WK, Phelps DL, National Institute of Child Health and Human Development Neonatal Research Network.
    Journal: Pediatrics; 2006 Feb; 117(2):e137-42. PubMed ID: 16390920.
    Abstract:
    OBJECTIVE: We sought to determine if an association exists between the use of histamine-2 receptor (H2) blockers and the incidence of necrotizing enterocolitis (NEC) in infants of 401 to 1500 g in birth weight. STUDY DESIGN: Data from the National Institute of Child Health and Human Development Neonatal Research Network very low birth weight (401-1500 g) registry from September 1998 to December 2001 were analyzed. The relation between the diagnosis of NEC (Bell stage II or greater) and antecedent H2-blocker treatment was determined by using case-control methodology. Conditional logistic regression was implemented, controlling for gender, site of birth (outborn versus inborn), Apgar score of < 7 at 5 minutes, and postnatal steroids. RESULTS: Of 11072 infants who survived for at least 12 hours, 787 (7.1%) developed NEC (11.5% of infants 401-750 g, 9.1% of infants 751-1000 g, 6.0% of infants 1001-1250 g, and 3.9% of infants 1251-1500 g). Antecedent H2-blocker use was associated with an increased incidence of NEC (P < .0001). CONCLUSIONS: H2-blocker therapy was associated with higher rates of NEC, which is in agreement with a previous randomized trial of acidification of infant feeds that resulted in a decreased incidence of NEC. In combination, these data support the hypothesis that gastric pH level may be a factor in the pathogenesis of NEC.
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