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  • Title: Can sTREM-1 predict septic shock & death in late-onset neonatal sepsis? A pilot study.
    Author: Arízaga-Ballesteros V, Alcorta-García MR, Lázaro-Martínez LC, Amézquita-Gómez JM, Alanís-Cajero JM, Villela L, Castorena-Torres F, Lara-Díaz VJ.
    Journal: Int J Infect Dis; 2015 Jan; 30():27-32. PubMed ID: 25461656.
    Abstract:
    BACKGROUND AND OBJECTIVES: The transmembrane glycoprotein TREM-1 triggers an inflammatory response. Its soluble fraction (sTREM-1) has been shown to have diagnostic accuracy for late-onset neonatal sepsis (LONS). Until now, the potential of sTREM-1 to predict septic shock and/or death in septic neonates has not been explored. This study obtained estimates of the incidence and prevalence of septic shock and/or death in septic neonates for future sample size calculations for confirmatory studies and evaluated the feasibility of using sTREM-1 as a predictor of septic shock and/or death in neonates with LONS criteria. STUDY DESIGN: A pilot study with a cross-sectional design was performed from May 1(st) to October 31(st), 2012. The participants were hospitalized neonates who, after three days of life, were diagnosed as having LONS. Plasma sTREM-1 was quantified by ELISA. The main outcome measurement was the development of septic shock and/or death. RESULTS: Of 71 eligible subjects, nine (12.7%) progressed to septic shock and/or death. In the LONS-Non-Shock group, the sTREM-1 median and interquartile range (IQR) plasma value were 10 (10 to 70) pg/mL. In the LONS & Shock/Death group, the values were 567 (260 to 649) pg/mL. These values were significantly different (Mann-Whitney's U test, p=0.001). A ROC curve for a proposed sTREM-1 cut-off value of 300 pg/mL exhibited an area under the curve of 0.884 (95% CI=0.73 to 1.0; p<0.0001), with a sensitivity of 0.78 (95% CI=0.46 to 0.94) and specificity of 0.97 (95% CI=0.92 to 0.99); PPV would be 0.78 (95% CI=0.46 to 0.94) and NPV 0.97 (95% CI=0.92 to 0.99). CONCLUSIONS: In neonates with LONS, sTREM-1 has the potential to provide an excellent predictive value for septic shock/death. Larger sample sizes are needed to identify the optimal cut-off value of plasma sTREM-1 for this diagnosis and to provide diagnostic accuracy measures.
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