Interleukin 6, galectin 3, growth differentiation factor 15, and soluble ST2 for mortality prediction in critically ill patients
Journal of Critical Care(2016)
Abstract
Purpose
The aim of this study was to compare the prognostic value of interleukin 6 (IL-6), galectin 3, growth differentiation factor 15 (GDF-15), and soluble ST2 (sST2) in an unselected cohort of critically ill patients.
Methods
During a study period of 1 year, we recruited 530 consecutive patients admitted to a medical intensive care unit of a tertiary care hospital. We examined a combination of inflammatory, renal, and cardiac biomarkers for the prediction of 90-day all-cause mortality.
Results
During follow-up, 118 patients died (22%). In univariate analyses, increased IL-6, galectin 3, GDF-15, and sST2 plasma concentrations at baseline were strong prognostic markers. However, in the multivariate models, only IL-6 and sST2 remained independent biomarkers adding additional prognostic information to the routinely used Simplified Acute Physiology Score (SAPS) II. Using a simple multimarker approach, patients with increased SAPS II, IL-6, and sST2 (ie, SAPS II >35, IL-6 >32.3pg/mL, and sST2 >103ng/mL) had the poorest outcome.
Conclusions
In this heterogeneous group of critically ill patients, only SAPS II, IL-6, and sST2 remained independent and additive prognostic markers for 90-day all-cause mortality. A combination of the SAPS II with the 2 complementary biomarkers might provide a valuable tool for risk stratification of critically ill patients.
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Key words
Transforming growth factor super family,Interleukin 1 receptor family,Interleukin 33,Procalcitonin,Troponin,Natriuretic peptide
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