Monocytic HLA-DR expression in intensive care patients: Interest for prognosis and secondary infection prediction

To test early measurement of human leukocyte antigen-DR expression on circulating monocytes (mHLA-DR) as prognostic marker, and the trend of mHLA-DR recovery for the prediction of late secondary infection risk in a large intensive care unit population. Prospective, observational study over 16 mos. I...

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Published in:Critical care medicine Vol. 37; no. 10; pp. 2746 - 2752
Main Authors: LUKASZEWICZ, Anne-Claire, GRIENAY, Marion, RESCHE-RIGON, Matthieu, PIRRACCHIO, Romain, FAIVRE, Valérie, BOVAL, Bernadette, PAYEN, Didier
Format: Journal Article
Language:English
Published: Hagerstown, MD Lippincott Williams & Wilkins 01-10-2009
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Summary:To test early measurement of human leukocyte antigen-DR expression on circulating monocytes (mHLA-DR) as prognostic marker, and the trend of mHLA-DR recovery for the prediction of late secondary infection risk in a large intensive care unit population. Prospective, observational study over 16 mos. Intensive care unit in a tertiary teaching hospital. Simplified Acute Physiology Score II >15, age >18 yrs. The mHLA-DR was measured by flow cytometry within the first 3 days and twice a week until discharge. We used a logistic regression model for outcome prediction, and a competing risk approach to test the relationship between mHLA-DR recovery (log (mHLA-DR) slope) and incidence of secondary infection. A total of 283 consecutive patients suffering from various pathologies were monitored (Simplified Acute Physiology Score II = 39, Sepsis-related Organ Failure Assessment of 5 on day 0). Early mHLA-DR was decreased in the whole population, however, more deeply in sepsis (p < .0001). Low mHLA-DR was associated with mortality in the whole population (p = .003), as in subgroups (nonseptic, neurologic, and septic), but not when adjusted on Simplified Acute Physiology Score II. In patients with a length of stay of >7 days (n = 70), the lower the slope of mHLA-DR recovery, the higher the incidence of the first secondary infection (adjusted on early mHLA-DR, p = .04). For a given severity, mHLA-DR proved not to a predictive marker of outcome, but a weak trend of mHLA-DR recovery was associated with an increased risk of secondary infection. Monitoring immune functions through mHLA-DR in intensive care unit patients therefore could be useful to identify a high risk of secondary infection.
ISSN:0090-3493
1530-0293
DOI:10.1097/00003246-200910000-00011