• A Chéron, G Monneret, C Landelle, B Floccard, and B Allaouchiche.
• Département d'anesthésie-réanimation, service de réanimation, hôpital Edouard-Herriot, hospices civils de Lyon, pavillon G, place d'Arsonval, 69437 Lyon cedex 03, France.
• Ann Fr Anesth Reanim. 2010 May 1; 29 (5): 368-76.

ObjectivesThe aim of this bibliographic review is to evaluate the usefulness of the measurement of HLA-DR expression on circulating monocytes (mHLA-DR) in predicting the development of nosocomial infections and unfavourable outcome in critically ill patients.Data SourceReferences obtained from the medical database PubMed in English and in French were reviewed. The keywords included separately or in combination were: HLA-DR antigens, sepsis, trauma, injuries, wounds, burns, stroke, pancreatitis, postoperative, prognostic, immunity, monocytic.Data ExtractionData in selected articles were reviewed, clinical and basic science research relevant information were extracted.Data SynthesisLow mHLA-DR expression appears as a marker for monocytic dysfunctions and immunosuppression, temporarily present in the majority of critically ill patients admitted to the ICU (sepsis, trauma injuries, postoperative, burns, pancreatitis and stroke). The decrease in mHLA-DR expression is a predictor of septic complications in all these clinical conditions. However, no predictive threshold value could be determined regarding unfavourable outcome.ConclusionThe monitoring of mHLA-DR expression could be a biomarker to detect ICU patients at high risk of developing secondary nosocomial infections. Those patients could probably benefit of preemptive strategies to prevent these infections.Copyright 2010 Elsevier Masson SAS. All rights reserved.

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