Abstract:
ObjectiveTo investigate the value of the lymphocyte CD4+/CD8+ ratio, N-terminal brain natriuretic peptide precursor(NT-probNP) and interleukin 6(IL-6) in evaluating the prognosis of patients with septic shock.
MethodsSeventy-seven patients with septic shock were selected for prospective study, and the CD4+/CD8+ ratio, NT-probNP, IL-6 and Maximun lactate (Lac) levels in all cases were detected in the first 24 h after septic shock.The gender, age, acute physiology and chronic health status scoring system Ⅱ(APACHE Ⅱ) score, combined with underlying diseases and other data were recorded.The independent risk factors of death in septic shock patients were analyzed by logistic regression analysis, and the CD4+/CD8+ ratio, NT-probNP and IL-6 were analyzed by linear correlation regression with APACHE Ⅱ score.The receiver operating characteristic(ROC) curve was drawn to analyze the value of CD4+/CD8+ ratio, NT-probNP and IL-6 in the evaluation of prognosis of patients with septic shock.
ResultsThe levels of NT-probNP and IL-6 in septic shock death group were significantly higher than those in survival group(P < 0.05), and the CD4+/CD8+ ratio in septic shock death group was significantly lower than that in survival group.The results of logistic regression analysis showed that the age, APACHE Ⅱ score, underlying disease, Lac, NT-probNP and IL-6 were the independent risk factors of death in patients with septic shock, and the CD4+/CD8+ ratio was a protective factor.The IL-6 and NT-probNP had a good correlation with APACHE Ⅱ(P < 0.01), while the CD4+/CD8+ ratio had not significant correlation with APACHE Ⅱ(P>0.05).The ROC curve showed that the predictive efficacy of serum NT-probNP, IL-6 and blood CD4+/CD8+ ratio on the death of septic shock patients on day 1 were 0.793, 0.678 and 0.708, respectively(P < 0.05).The area under ROC curve was 0.840(P < 0.05).
ConclusionsThe CD4+/CD8+ ratio, NT-proBNP and IL-6 are significantly correlated with the severity and prognosis of septic shock patients.The combination of these three factors has excellent predictive value for the prognosis of septic shock patients.