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  • Title: Diagnostic markers for neonatal sepsis: comparing C-reactive protein, interleukin-6 and immunoglobulin M.
    Author: Khassawneh M, Hayajneh WA, Kofahi H, Khader Y, Amarin Z, Daoud A.
    Journal: Scand J Immunol; 2007 Feb; 65(2):171-5. PubMed ID: 17257222.
    Abstract:
    This clinical study was conducted to evaluate the diagnostic value of C-reactive protein (CRP), interlekin-6 (IL-6) and immunoglobulin M (IgM) in the early diagnosis of neonatal sepsis. The diagnostic values of each marker separately or in combinations were evaluated. The optimal cut-off values of each marker in the diagnosis of neonatal sepsis were defined. Between December 2004 and March 2005, a total of 78 neonates at different ages with different diagnoses in a neonatal intensive care unit in North Jordan were enrolled. Patients were classified into 'sepsis' group, 'probable sepsis' group and 'no sepsis' group. Blood samples were collected for CRP, IL-6 and IgM determination. A CRP value of 5 mg/l was the best among the three parameters with 95% sensitivity and 98% negative predictive value. Combination between parameters was helpful in enhancing the ability to diagnose sepsis. The best combination was CRP > or = 5 mg/l and/or IgM of > or =20 mg/dl. We conclude that CRP, IL-6 and IgM are helpful in the early diagnosis of Gram-negative neonatal sepsis. However, CRP continues to be the best single test. The use of both CRP and IgM in combination was the most helpful in predicting Gram-negative neonatal sepsis. We speculate a significant role of this combination in making decisions regarding antibiotics treatment and upgrading the level of medical care and observation in a setting where Gram-negative micro-organisms are causing the majority of neonatal infections.
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