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A high anti-inflammatory response is associated with intermediate-term mortality in patients with sepsis
Intensive Care Medicine Experimental volume 3, Article number: A79 (2015)
Sepsis is characterized by a complex systemic inflammatory response to infection. While an overwhelming pro-inflammatory response is held responsible for early deaths, subsequent anti-inflammatory cytokine production may lead to immunosuppression and secondary infections. This has been suggested as a cause of intermediate-term deaths.
To study the relation between a persistent anti-inflammatory response and day 4-14 mortality in patients with severe sepsis and septic shock who have survived beyond the initial pro-inflammatory phase.
We included consecutive patients admitted with severe sepsis or septic shock to the Intensive Care Units (ICU) of 2 tertiary care centres in The Netherlands between January 2011 and July 2013 with a length of stay of at least 4 days. We excluded patients with prior immune deficiency. The anti-inflammatory response was assessed through interleukin (IL)-10 plasma concentrations on admission, day 2, and day 4 using BD™ CBA Flex Set system immunoassays. We categorized patients into 3 groups (low, moderate, high) based on day 4 IL-10 percentiles ( < 25th, 25-75th, >75th) and change from day 2 values. We measured IL-6 as marker of pro-inflammation. We used multivariable logistic regression analysis to study the relation with day 4-14 mortality and control for confounding.
We enrolled 485 patients; of these, we excluded 116 cases because of known immune deficiency and 19 cases because of missing plasma samples, leaving 350 subjects for analysis. A total of 148 (42%) patients were categorized as having a low anti-inflammatory response, 122 (35%) as moderate, and 80 (23%) as high. The groups were similar with respect to age, gender, and ICU length of stay (LOS), but patients with high anti-inflammatory response had higher Apache IV scores and were diagnosed with more abdominal and less pulmonary infections. Mortality between day 4 and 14 was 14%, 9% and 36% for patients with low, moderate, and high IL-10 levels, respectively (p= < 0.01). After adjustment for age, comorbidities, sequential organ failure assessment score, site of infection and IL-6 response in the first 4 days of ICU admission, a persistent high anti-inflammatory response on day 4 remained independently associated with increased mortality (crude odds ratio high vs. low 3.4; adjusted 2.8, 95% CI 1.4-5.7).
High anti-inflammatory response after 4 days is an independent risk factor for intermediate-term mortality in critically ill patients with sepsis.
This study was performed within the Molecular diagnosis And Risk stratification of Sepsis (MARS) project (grant-04l-201).
Hotchkiss RS, Monneret G, Payen D: Sepsis-induced immunosuppression: from cellular dysfunctions to immunotherapy. Nat Rev Immunol. 2013, 13 (12): 862-74. 10.1038/nri3552.
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Frencken, J., van Vught, L., Ong, D. et al. A high anti-inflammatory response is associated with intermediate-term mortality in patients with sepsis. ICMx 3, A79 (2015). https://doi.org/10.1186/2197-425X-3-S1-A79
- Intensive Care Unit
- Septic Shock
- Severe Sepsis
- Intensive Care Unit Admission
- Sequential Organ Failure Assessment