2026, Number 1
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Rev Med UAS 2026; 16 (1)
Empirical antibiotic use in neonates with suspected early-onset sepsis: a retrospective analysis at a secondary-level hospital
García-Cárdenas CÁ, Martínez-Félix NS, López-Ríos EG, Cabanillas-Ayón M, Pérez-García XH
Language: Spanish
References: 26
Page: 13-25
PDF size: 239.00 Kb.
ABSTRACT
Objective: To describe the empirical use of antibiotics in newborns (NB) with suspected early-onset neonatal sepsis (EONS) in a
secondary-level hospital, considering clinical criteria and the results of biomarkers and blood cultures.
Materials and methods: An
observational, descriptive, and retrospective study conducted at the Hospital Civil de Culiacán, based on the review of medical records
of neonates ≥34 weeks of gestational age hospitalized for suspected EONS between January 2011 and December 2020. Perinatal
risk factors, C-reactive protein (CRP), procalcitonin (PCT) and blood culture results, antibiotic regimens, and treatment duration were
analyzed.
Results: A total of 593 newborns were included in the final analysis after applying the selection criteria. Of these, 99.8%
(n=592) received empirical antibiotic therapy; however, only 3% (n=18) had a positive blood culture. PCT demonstrated 100% sensitivity
and a 100% negative predictive value (NPV), but low specificity (27.3%). In 157 newborns with negative PCT, clinical signs and
systemic inflammatory response (SIR) parameters were additionally evaluated. In this subgroup, 51.6% (n=81) showed no clinical
manifestations compatible with sepsis, and 57 patients received antibiotic treatment despite the absence of clinical findings or alterations
in CRP or blood cultures. Of the 593 newborns included, 93.7% (n=555) received standard empirical regimens, and 82.4%
(n=488) received antibiotics for more than three days.
Conclusions: There is a significant discrepancy between antibiotic initiation and
clinical or microbiological evidence in suspected EOS. The systematic integration of biomarkers, risk factors, and clinical findings—
aligned with national and international guidelines (CENETEC, SIBEN)—is essential to optimize management and avoid unnecessary treatments and their potential consequences.
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