Interleukin-6 (IL-6) and soluble receptors for interleukin-2 (sIL-2R) in the diagnosis of early severe infection in the critically ill newborns.
The aim of our study was to evaluate the diagnostic accuracy of serial determination of interleukin-6 (IL-6) and soluble receptors of interleukin-2 (sIL-2R) in the diagnosis of early infection in the critically ill newborns and compare it with the routinely used C-reactive protein (CRP). Fourty-six critically ill newborns (median age 8 h, range 1-96 h), treated at the multidisciplinary intensive care unit, Division for Paediatric Surgery and Intensive Care, University Medical Centre Ljubljana, were included in the study. Newborns were divided into three groups: group I microbiologically confirmed severe infection (n = 14), group II suspected but not confirmed infection (n = 12) and group III respiratory distress syndrome without laboratory signs of infection. Serum concentrations of IL-6, sIL-2R and CRP were determined on admission and at 12 and 24 h after admission. On admission the concentrations of IL-6 and sIL-2R were significantly higher in group I than in group III, but there was no difference between groups I and II. On admission area under receiver operating characteristic (ROC) curve for IL-6 was 0.756, for IL-2R 0.821 and for CRP 0.799. Repeated determination at 12 h improved diagnostic accuracy for sIL-R and CRP but not for IL-6.
Tomsic Matić
M
M
Lek Pharmaceutical and Chemical Company d.d., Ljubljana, Slovenia.
Derganc
M
M
Wraber
B
B
Primozic
J
J
D001424:Bacterial Infections / Q000097:blood* / Q000175:diagnosis*; D016638:Critical Illness; D006801:Humans; D007231:Infant, Newborn; D015850:Interleukin-6 / Q000097:blood*; D015375:Receptors, Interleukin-2 / Q000097:blood*; D012127:Respiratory Distress Syndrome, Newborn / Q000097:blood; D012995:Solubility
D015850:Interleukin-6; D015375:Receptors, Interleukin-2