Abstract
To determine whether antibiotic use in the first 14 postnatal days in preterm, very low birth weight (birth weight of ≤1500 g) infants is associated with risk after 14 days of age for late-onset sepsis, necrotizing enterocolitis (NEC), or death after controlling for severity of illness using the Clinical Risk Index in Babies II score, and determine whether duration of antibiotic exposure was associated with risk of adverse outcomes. This retrospective cohort study included very low birth weight infants born at ≤326/7 weeks of gestation admitted to the neonatal intensive care unit from September 2010 to June 2014. Infants were excluded if they had major congenital anomalies or culture-proven sepsis, NEC, or death during the first 14 days of life. Antibiotic exposure was recorded as days of therapy and length of therapy in days. Of 374 infants, 70 (19%) had late-onset sepsis, NEC, or death after 14 days of age. The median number of antibiotic days of therapy and length of therapy were 5.5 and 3.0, respectively. In multivariate analysis after controlling for severity of illness, each antibiotic day of therapy was associated with a 1.24 times increased risk of sepsis, NEC, or death (OR, 1.24; 95% CI, 1.17-1.31). Risk was similar wh...Continue Reading
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