Presumed and definite bacteremia in extremely low gestational age newborns

UMMS Affiliation

Department of Obstetrics and Gynecology

Publication Date


Document Type



Bacteremia; Female; Gestational Age; Humans; Infant, Newborn; Infant, Premature; Infant, Premature, Diseases; Male; Risk; *Terminology as Topic; Time Factors


Obstetrics and Gynecology


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. Paediatrica.

DOI of Published Version



Acta Paediatr. 2011 Jan;100(1):36-41. doi: 10.1111/j.1651-2227.2010.01963.x. Epub 2010 Aug 16. Link to article on publisher's site

Journal/Book/Conference Title

Acta paediatrica (Oslo, Norway : 1992)


Francis Bednarek, Ellen Delpapa and Bo Xu participated in this study as ELGAN Study Investigators.

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Link to Article in PubMed

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