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Presumed and definite bacteremia in extremely low gestational age newborns

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Abstract Aim: 

To explore risk patterns for presumed and definite, early and late neonatal bacteremia. Methods: 

We studied 1106 extremely low gestational age newborns who survived until postnatal day 28. We defined early definite bacteremia as a positive bacterial culture in the first week and definite late bacteremia as a positive bacterial culture in week 2, 3 or 4. Bacteremia was presumed if antibiotics were given for more than 72 h despite negative blood cultures. Results: 

Risk patterns did not differ much for presumed and definite bacteremia in the first postnatal month. While maternal and pregnancy characteristics were associated with early bacteremia, neonatal comorbidities, especially NEC, were the main antecedents/correlates of late bacteremia. All four categories of bacteremia were associated with younger gestational age and lower birth weight. Infants with presumed and definite bacteremia had similar distributions of days of ventilation and oxygenation. Conclusion: 

Definite and presumed late bacteremias have rather similar risk patterns, while those of early and late bacteremia differ appreciably.
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Keywords: Infant; Risk; Sepsis

Document Type: Research Article

Affiliations: 1: Newborn Medicine, Floating Hospital for Children at Tufts Medical Center, Boston, MA, USA 2: Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA 3: Neuroepidemiology Unit, Children’s Boston Hospital, Boston, MA, USA

Publication date: 2011-01-01

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