Objective: To evaluate the clinical value of a combined measurement of C-reactive protein(CRP), serum amyloid A(SAA) and platelet count changes in early diagnosis sepsis among neutropenic patients. Methods: 56 neutropenic patients with suspected sepsis admitted to Wujin Hospital Affiliated to Jiangsu University enrolled as the observation group. 58 neutropenic patients without sepsis served as controls. Blood samples were collected at 0 h and 24 h post-suspected of sepsis for CRP, SAA, and platelet count measurements. The diagnostic performance of these biomarkers was assessed using receiver operating characteristic(ROC) curve analysis. Results: In 0 h and 24 h,CRP, SAA in the study group were significantly higher than those of the control group(P<0.05), platelet count in 0 h between the study group and the control group was not statistically significant(P>0.05), In 24 h, platelet count were significantly lower than those of the control group(P<0.05). Among the sepsis group, Gram-negative bacteria(71.8%) were more common than Gram-positive bacteria(28.2%). There were no significant differences in serum CRP, SAA and platelet counts between Gram-positive and Gram-negative bacterial infections. The area under the curve(AUC) of platelet counts in 0 h alone was not statistically significant(P=0.537). The AUC of CRP and SAA combination detection in diagnosing sepsis was 0.943(specificity 84.5%). The area under the curve(AUC) of CRP, SAA and platelet counts in 24 h alone in diagnosing sepsis was 0.796(specificity 55.2%), 0.902(specificity 72.4%) and 0.859(specificity 75.9%), respectively. The AUC of their combination detection in diagnosing sepsis was 0.970(specificity 98.3%). Conclusion: Dynamic monitoring of CRP, SAA combined with platelet count measurements can significantly improve the accuracy of early diagnosis for sepsis in neutropenic patients, providing crucial clinical guidance value. |
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