[The study on pro-adrenomedullin as a new biomarker in sepsis prognosis and risk stratification].
OBJECTIVE
To assess the clinical value of pro-adrenomedullin (pro-ADM) in the prognosis and risk stratification in sepsis.


METHODS
Fifty-one critically ill patients admitted to the intensive care unit (ICU) were prospectively stratified into four groups according to internationally recognized criteria: systemic inflammatory response syndrome (SIRS, 25 cases), sepsis (12 cases), severe sepsis (9 cases) and septic shock (5 cases). The levels of plasma pro-ADM was determined in every patient using a new sandwich immunoassay, and compared with procalcitonin (PCT), C-reactive protein (CRP) and interleukin-6 (IL-6), and the acute physiology and chronic health evaluation II (APACHE II) score.


RESULTS
(1) Median pro-ADM concentration was 0.34 microg/L for SIRS, 2.23 microg/L for sepsis, 4.57 microg/L for severe sepsis and 8.21 microg/L for septic shock. The plasma concentration of pro-ADM exhibited a gradual increase, and the median pro-ADM value was highest in the septic shock group (all P<0.05). (2) Compared with the other biomarkers, in the sepsis, severe sepsis and septic shock groups, the plasma concentration of pro-ADM and APACHE II score in the non-survivors was significantly higher than in the survivors (pro-ADM: 2.01 microg/L vs. 9.75 microg/L, APACHE II score: 23.44 scores vs. 38.21 scores, both P<0.05). (3) By the receiver operating characteristic (ROC) curve plot analysis of pro-ADM in sepsis, the area under the ROC curve for pro-ADM (0.87) in survivors was similar to the area under the ROC curve for PCT (0.81) and APACHE II score (0.81), and was significantly higher than the area under the ROC curve for CRP (0.53) and IL-6 (0.71).


CONCLUSIONS
The measurement of pro-ADM is a new and useful marker in sepsis prognosis and risk stratification.
Kang
Fu-xin
FX
Intensive Care Unit, Shanghai Jiaotong University Affiliated First People's Hospital, Shanghai 201620, China.
Wang
Rui-lan
RL
Yu
Kang-long
KL
Wei
Qiao
Q
D053607:Adrenomedullin / Q000097:blood*; D000328:Adult; D002097:C-Reactive Protein / Q000378:metabolism; D002116:Calcitonin / Q000097:blood; D015740:Calcitonin Gene-Related Peptide; D016638:Critical Illness; D005260:Female; D006801:Humans; D007362:Intensive Care Units; D015850:Interleukin-6 / Q000097:blood; D008297:Male; D008875:Middle Aged; D010446:Peptide Fragments / Q000097:blood*; D011183:Postoperative Complications; D011498:Protein Precursors / Q000097:blood; D018570:Risk Assessment; D018805:Sepsis / Q000097:blood* / Q000175:diagnosis; D012772:Shock, Septic / Q000097:blood / Q000175:diagnosis; D018746:Systemic Inflammatory Response Syndrome / Q000097:blood / Q000175:diagnosis
C000606589:CALCA protein, human; D015850:Interleukin-6; D010446:Peptide Fragments; D011498:Protein Precursors; D053607:Adrenomedullin; D002116:Calcitonin; D002097:C-Reactive Protein; D015740:Calcitonin Gene-Related Peptide