Diagnostic Value of PTX-3 Combined with PCT and CRP for Neonatal Sepsis

Aim: Neonatal sepsis is a critical illness among neonates and is the leading cause of neonatal death. In this study, we compared the changes in serum PTX-3 levels in neonates with sepsis and non-septicemia, as well as the diagnostic advantages and value of serum PTX-3 compared to traditional indicators such as WBC, CRP, and PCT. Methods: A total of 109 neonates were included in this study. Neonates were divided into three groups: 35 neonates were assigned to the sepsis group; 36 to the local infection group; and 38 assigned to the control group. Blood was collected to measure complete blood counts, CRP, PCT, liver and kidney function, lactate, and PTX-3 levels. Results: CRP, PCT, and PTX-3 in the sepsis group were significantly higher compared to the local infection group and non-infection group (P<0.01 or P>0.05). PCT and PTX-3 levels in the local infection group were significantly higher compared to the non-infection group (P>0.05). The combination of WBC+CRP+PCT+PTX-3 was more sensitive for the diagnosis of neonatal infection. For the diagnosis of neonatal sepsis, CRP was the most sensitive index, with PTX-3 having the best specificity. The combination of WBC+CRP+PTX-3 was found to significantly improve the sensitivity and specificity of diagnosis. Conclusion: PTX-3 could be used as a new biomarker for neonatal sepsis, while the combination with WBC, CRP, and PCT could significantly improve the sensitivity and specificity for sepsis diagnosis.