4.7 Article

Patterns of Infections among Extremely Preterm Infants

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JOURNAL OF CLINICAL MEDICINE
卷 12, 期 7, 页码 -

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MDPI
DOI: 10.3390/jcm12072703

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extremely preterm infants; neonatal infections; exposure to antibiotics; sepsis

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Infections are a major cause of neonatal death in extremely preterm infants. This study analyzed data from a trial to evaluate the incidence, pathogenesis, and outcomes of sepsis in these infants. Of the included infants, 24% had positive blood cultures. Early onset sepsis occurred in 6% of infants, with Coagulase negative Staphylococci and Escherichia Coli as the most frequent pathogens. Late onset sepsis occurred in 20% of infants. Antibiotic use for presumed sepsis was higher than confirmed infection rates. This study highlights the need for further research on antibiotic stewardship and culture-negative sepsis in extremely preterm infants.
Infections remain a leading cause of neonatal death, especially among the extremely preterm infants. To evaluate the incidence, pathogenesis, and in-hospital outcomes associated with sepsis among hospitalized extremely preterm infants born at 24-0/7 to 27-6/7 weeks of gestation, we designed a post hoc analysis of data collected prospectively during the Preterm Epo Neuroprotection (PENUT) Trial, NCT #01378273. We analyzed culture positive infection data, as well as type and duration of antibiotic course and described their association with in-hospital morbidities and mortality. Of 936 included infants, 229 (24%) had at least one positive blood culture during their hospitalization. Early onset sepsis (EOS, =3 days after birth) occurred in 6% of the infants, with Coagulase negative Staphylococci (CoNS) and Escherichia Coli the most frequent pathogens. Late onset sepsis (LOS, >day 3) occurred in 20% of the infants. Nearly all infants were treated with antibiotics for presumed sepsis at least once during their hospitalization. The risk of confirmed or presumed EOS was lower with increasing birthweight. Confirmed EOS had no significant association with in-hospital outcomes or death while LOS was associated with increased risk of necrotizing enterocolitis and death. Extremely premature infants with presumed sepsis as compared to culture positive sepsis had lower rates of morbidities. In conclusion, the use of antibiotics for presumed sepsis remains much higher than confirmed infection rates. Ongoing work exploring antibiotic stewardship and presumed, culture-negative sepsis in extremely preterm infants is needed.

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