Point-of-care Procalcitonin Trends in Suspected Neonatal Late-onset Infection: a Prospective Observational Study

Overview

Journal Pediatr Res

Specialties Biology
Pediatrics

Date 2024 Oct 25

PMID 39455860

Authors

Sean J Armstrong

Jennifer J Brady

Richard J Drew

Adrienne Foran

Affiliations

Soon will be listed here.

Abstract

Background: Procalcitonin-guided antimicrobial decision-making has been shown to be safe in adult intensive care settings. Most antimicrobial exposure in neonatal units is in culture-negative conditions. We hypothesise that Procalcitonin aids antimicrobial stewardship efforts in suspected Late-Onset Neonatal Sepsis.

Methods: Neonates were enrolled if they were aged over 72 h and were placed on antibiotics for a suspected infection. Procalcitonin levels were taken at set timepoints for the duration of antimicrobial exposure. Three subgroups were created: non-infectious episodes, blood culture-negative infectious episodes, and bloodstream infections.

Results: Eighty-five suspected infectious episodes were recruited across two tertiary neonatal and paediatric intensive care units. There was a significant difference between the median PCT in bloodstream infections (BSI) compared to non-infectious episodes (2.13 versus 0.26 µg/L, p < 0.001). A cut-off of 0.5 µg/L had sensitivity 92.9% and specificity 68% for bloodstream infections at 24 h. The difference between median PCT values at 24 h was significant (0.27 vs 7.08; p < 0.001) for feed intolerance vs. NEC Grade IIIa-IIIb subgroups.

Conclusion: Procalcitonin levels taken 24 h following evaluation for late-onset neonatal infection are useful in out ruling BSI or severe Necrotising Enterocolitis. Up to 30% of antimicrobial exposure could be avoided with the use of Procalcitonin levels in low-risk neonates.

Impact: This study demonstrates the utility of serial Procalcitonin measurements in antimicrobial stewardship efforts in the Neonatal Unit. Procalcitonin can be used to aid in antimicrobial decision making in suspected Late-Onset neonatal infection. Procalcitonin testing at twenty-four hours in episodes of Gastrointestinal deterioration can out rule Bells Grade III Necrotising Enterocolitis.

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