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Critical Care
Published in: Critical Care 6/2005

Open Access 01-12-2005 | Research

Mid-regional pro-adrenomedullin as a prognostic marker in sepsis: an observational study

Authors: Mirjam Christ-Crain, Nils G Morgenthaler, Joachim Struck, Stephan Harbarth, Andreas Bergmann, Beat Müller

Published in: Critical Care | Issue 6/2005

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Abstract

Introduction

Measurement of biomarkers is a potential approach to early assessment and prediction of mortality in patients with sepsis. The aim of the present study was to evaluate the prognostic value of mid-regional pro-adrenomedullin (MR-proADM) levels in a cohort of medical intensive care patients and to compare it with other biomarkers and physiological scores.

Method

We evaluated blood samples from 101 consecutive critically ill patients admitted to the intensive care unit and from 160 age-matched healthy control individuals. The patients had initially been enrolled in a prospective observational study investigating the prognostic value of endocrine dysfunction in critically ill patients ("PEDCRIP" Study). The prognostic value of MR-proADM levels was compared with those of two physiological scores and of various biomarkers (for example C-reactive Protein, IL-6, procalcitonin). MR-proADM was measured in EDTA plasma from all patients using a new sandwich immunoassay.

Results

On admission, 53 patients had sepsis, severe sepsis, or septic shock, and 48 had systemic inflammatory response syndrome. Median MR-proADM levels on admission (nmol/l [range]) were 1.1 (0.3–3.7) in patients with systemic inflammatory response syndrome, 1.8 (0.4–5.8) in those with sepsis, 2.3 (1.0–17.6) in those with severe sepsis and 4.5 (0.9–21) in patients with septic shock. In healthy control individuals the median MR-proADM was 0.4 (0.21–0.97). On admission, circulating MR-proADM levels in patients with sepsis, severe sepsis, or septic shock were significantly higher in nonsurvivors (8.5 [0.8–21.0]; P < 0.001) than in survivors (1.7 [0.4–17.6]). In a receiver operating curve analysis of survival of patients with sepsis, the area under the curve (AUC) for MR-proADM was 0.81, which was similar to the AUCs for IL-6, Acute Physiology and Chronic Health Evaluation II score and Simplified Acute Physiology Score II. The prognostic value of MR-proADM was independent of the sepsis classification system used.

Conclusion

MR-proADM may be helpful in individual risk assessment in septic patients.
Appendix
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Metadata
Title
Mid-regional pro-adrenomedullin as a prognostic marker in sepsis: an observational study
Authors
Mirjam Christ-Crain
Nils G Morgenthaler
Joachim Struck
Stephan Harbarth
Andreas Bergmann
Beat Müller
Publication date
01-12-2005
Publisher
BioMed Central
Published in
Critical Care / Issue 6/2005
Electronic ISSN: 1364-8535
DOI
https://doi.org/10.1186/cc3885

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