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Evaluation of Inflammatory Biomarkers in Pediatric Hematology-Oncology Patients With Bloodstream Infection.
Journal of Pediatric Hematology/oncology 2020 September 16
Bloodstream infection (BSI) is a serious complication in pediatric hematology-oncology patients. To evaluate the clinical significance of C-reactive protein (CRP), procalcitonin (PCT), albumin, fibrinogen, and D-dimer as potential biomarkers to differentiate among various subtypes of BSIs in pediatric patients with hematological and oncological diseases, we retrieved and analyzed the medical records of pediatric hematology-oncology patients diagnosed with BSI at our hospital between January 2016 and December 2017. The demographic (sex and age) and clinical (primary diseases) characteristics, and laboratory test results (white blood cell and absolute neutrophil counts, and serum CRP, PCT, albumin, fibrinogen, and D-dimer levels) were compared between nosocomial and non-nosocomial; neutropenic and non-neutropenic; and gram-positive and gram-negative BSI episodes. A total of 125 BSI episodes were included, including 69 (55.2%) nosocomial cases, 94 (75.2%) neutropenic cases, and 49 (39.2%) gram-positive episodes. Of the 5 potential biomarkers evaluated (CRP, PCT, albumin, fibrinogen, and D-dimer), PCT levels were significantly lower in neutropenic episodes and gram-positive BSIs (P=0.008 and P=0.001, respectively). At a cutoff value of 0.67 ng/mL, the diagnostic sensitivity, specificity, and positive/negative predictive values of PCT for the differentiation of gram-positive and gram-negative bacterial sepsis were 74.2%, 64.6%, 70.8%, and 65.2%, respectively. We concluded that PCT might potentially serve as a biomarker to differentiate between gram-positive and gram-negative BSIs in pediatric hematology-oncology patients.
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