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Background <p>Although neonatal sepsis remains a significant cause of morbidity and mortality in preterm infants, few studies in Vietnam have compared the characteristics of early-onset sepsis (EOS) and late-onset sepsis (LOS).</p> Objective <p>To compare the clinical, laboratory, and microbiological characteristics of EOS and LOS in preterm neonates at a tertiary obstetric hospital in Vietnam.</p> Methods <p>This cross-sectional study included 106 preterm infants with culture-confirmed sepsis admitted from August 2022 to May 2024. Clinical data, laboratory results and blood cultures were analyzed. Statistical tests and univariate logistic regression were used to explore differences between EOS and LOS.</p> Results <p>Of 106 neonates, 24 (22.6%) had EOS, and 82 (77.4%) had LOS. LOS predominated in extremely preterm, very low birth weight infants and was associated with more severe symptoms, including respiratory distress and abnormal heart rate. EOS cases were more likely to have birth weight ≥ 1500 g and maternal conditions such as intrapartum fever, genital infections, contaminated amniotic fluid and prolonged amniotic fluid leakage (&gt; 18 h). Laboratory analysis revealed higher levels of leukopenia, platelet and cerebrospinal fluid protein in EOS, as well as elevated C-reactive protein and blood protein in LOS. Gram-negative bacteria were predominant in both groups. <i>Escherichia coli</i> was most common in EOS (46%), whereas <i>Klebsiella pneumoniae</i> predominated in LOS (38%).</p> Conclusion <p>EOS and LOS in preterm neonates exhibit distinct patterns in perinatal factors, clinical manifestations, laboratory findings and microbiological profiles. Differentiating these two entities may aid in timely diagnosis and guide empirical treatment in settings with limited resources.</p>

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Clinical, laboratory, and microbiological differences between early- and late-onset neonatal sepsis in preterm infants: a cross-sectional study in Vietnam

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  • 发表日期：

    2025年12月20日

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  • Hung Mai Trong,
  • Lam Nguyen Duc,
  • Nhan Tran Luong,
  • Nga Nguyen Thi Quynh,
  • Phuong Pham Thi Thu,
  • Anh Tran Tuan,
  • Duc Do Thanh,
  • Huy Do Duc

摘要

Background

Although neonatal sepsis remains a significant cause of morbidity and mortality in preterm infants, few studies in Vietnam have compared the characteristics of early-onset sepsis (EOS) and late-onset sepsis (LOS).

Objective

To compare the clinical, laboratory, and microbiological characteristics of EOS and LOS in preterm neonates at a tertiary obstetric hospital in Vietnam.

Methods

This cross-sectional study included 106 preterm infants with culture-confirmed sepsis admitted from August 2022 to May 2024. Clinical data, laboratory results and blood cultures were analyzed. Statistical tests and univariate logistic regression were used to explore differences between EOS and LOS.

Results

Of 106 neonates, 24 (22.6%) had EOS, and 82 (77.4%) had LOS. LOS predominated in extremely preterm, very low birth weight infants and was associated with more severe symptoms, including respiratory distress and abnormal heart rate. EOS cases were more likely to have birth weight ≥ 1500 g and maternal conditions such as intrapartum fever, genital infections, contaminated amniotic fluid and prolonged amniotic fluid leakage (> 18 h). Laboratory analysis revealed higher levels of leukopenia, platelet and cerebrospinal fluid protein in EOS, as well as elevated C-reactive protein and blood protein in LOS. Gram-negative bacteria were predominant in both groups. Escherichia coli was most common in EOS (46%), whereas Klebsiella pneumoniae predominated in LOS (38%).

Conclusion

EOS and LOS in preterm neonates exhibit distinct patterns in perinatal factors, clinical manifestations, laboratory findings and microbiological profiles. Differentiating these two entities may aid in timely diagnosis and guide empirical treatment in settings with limited resources.