alexa Evaluation of procalcitonin for diagnosis of neonatal sepsis of vertical transmission.
Reproductive Medicine

Reproductive Medicine

Journal of Pregnancy and Child Health

Author(s): Lpez Sastre JB, Sols DP, Serradilla VR, Colomer BF, Cotallo GD Grupo de Ho

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Abstract BACKGROUND: The results of recent studies suggest the usefulness of PCT for early diagnosis of neonatal sepsis, with varying results. The aim of this prospective multicenter study was to determine the behavior of serum PCT concentrations in both uninfected and infected neonates, and to assess the value of this marker for diagnosis of neonatal sepsis of vertical transmission. METHODS: PCT was measured in 827 blood samples collected prospectively from 317 neonates admitted to 13 acute-care teaching hospitals in Spain over one year. Serum PCT concentrations were determined by a specific immunoluminometric assay. The diagnostic efficacy of PCT at birth and within 12-24 h and 36-48 h of life was evaluated calculating the sensitivity, specificity, and likelihood ratio of positive and negative results. RESULTS: 169 asymptomatic newborns and 148 symptomatic newborns (confirmed vertical sepsis: 31, vertical clinical sepsis: 38, non-infectious diseases: 79) were studied. In asymptomatic neonates, PCT values at 12-24 h were significantly higher than at birth and at 36-48 h of life. Resuscitation at birth and chorioamnionitis were independently associated to PCT values. Neonates with confirmed vertical sepsis showed significantly higher PCT values than those with clinical sepsis. PCT thresholds for the diagnosis of sepsis were 0.55 ng/mL at birth (sensitivity 75.4\%, specificity 72.3\%); 4.7 ng/mL within 12-24 h of life (sensitivity 73.8\%, specificity 80.8\%); and 1.7 ng/mL within 36-48 h of life (sensitivity 77.6\%, specificity 79.2\%). CONCLUSION: Serum PCT was moderately useful for the detection of sepsis of vertical transmission, and its reliability as a maker of bacterial infection requires specific cutoff values for each evaluation point over the first 48 h of life.
This article was published in BMC Pediatr and referenced in Journal of Pregnancy and Child Health

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