Affiliation:
1. Marmara University, Department of Child Health and Pediatrics, School of Medicine, Division of Neonatology
Abstract
Objective: To assess if systemic immune-inflammatory index (SII) has a diagnostic role for late-onset sepsis (LOS) in premature
neonates.
Patients and Methods: A single-center retrospective observational study including preterm infants with culture-proven LOS and
controls was conducted between January 2017 and December 2022. SII was derived using complete blood count values acquired at the
beginning of and three to five days before LOS. SII was compared between the LOS group and controls.
Results: A total of 144 infants were included in the study. The SII values of the LOS group were found to be significantly increased in
comparison to the control group [376.74 (11.11 – 15170) vs. 235.24 (46.83 – 1214.38) (median, min-max), P =0.018]. The SII values
significantly increased when pre-sepsis and LOS values were compared [200.6 (0 – 1295.78) vs. 328.28 (0 – 14678, P