Presumed and definite bacteremia in extremely low gestational age newborns.
OBJECTIVE
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.


CONCLUSIONS
Definite and presumed late bacteremias have rather similar risk patterns, while those of early and late bacteremia differ appreciably.
Patel
Sonal
S
Floating Hospital for Children at Tufts Medical Center, Boston, MA 02111, USA.
Dammann
Olaf
O
Martin
Camilia R
CR
Allred
Elizabeth N
EN
Leviton
Alan
A
D016470:Bacteremia / Q000175:diagnosis*; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000175:diagnosis*; D008297:Male; D012306:Risk; D009626:Terminology as Topic; D013997:Time Factors