• Suzana Margareth Lobo and Francisco Ricardo Marques Lobo.
• Division of Critical Care Medicine, Department of Internal Medicine, Medical School, Hospital de Base, São José do Rio Preto, São Paulo, Brazil.
• Rev Bras Ter Intensiva. 2007 Jun 1; 19 (2): 210-5.

Background And ObjectivesSepsis is the expression of a complex network of mediators. Multiple organ dysfunction and septic shock indeed remain a major cause of death among ICU patients worldwide. Prompt recognition of both the diagnosis and the complicated evolution are essential, hence the importance of using biological markers. The main pro-inflammatory and anti-inflammatory cytokines as well as hundreds of others cellular markers, circulating bioactive molecules or coagulation products are potential biological markers that could help to characterize the presence of infection and sepsis. We aimed to review the main biological markers that could be used nowadays or possibly in the future, either in clinical or research fields.ContentsA selective review of biologic markers of sepsis focusing on markers of the coagulation cascade, C-reactive protein and procalcitonin.ConclusionsMost of the available biological markers is still not a practical method to be used at the bed-side and is currently restricted to research works. Nowadays the determination of CRP or PCT serum levels can be of great help in the critically ill patient care along with the conventional parameters.

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