RESUMEN
Objective To investigate the accuracy of the plasma DNA concentration in evaluating the prognosis in patients with sepsis.Methods One hundred and sixty patients with sepsis were enrolled as the sepsis group (group SE).Another 109 patients without sepsis hospitalized during the same period served as the control group (group C).The venous blood sample was taken on admission for determination of plasma DNA concentration by polymerase chain reaction,C reactive protein (CRP) concentration by ELISA.APACHE Ⅱ score and SOFA score were evaluated at 24 h after admission.The 160 patients with sepsis were divided into two groups according to the result of prognosis:survival group ( n =103) and death group ( n =57).Results Compared with group C,the plasma DNA concentration,CRP concentration,APACHE Ⅱ score and SOFA score were significantly increased in group SE (P＜0.05).Compared with survival group,the plasma DNA concentration,APACHEⅡ score and SOFA score were significantly increased in death group ( P ＜ 0.05).The areas under receiver operating characteristic (ROC) curves of the plasma DNA concentration was significantly larger than those of APACHE Ⅱ score and SOFA score (0.81(95％ CI,0.74-0.88) versus 0.68(95％ CI,0.60-0.77),or 0.72(95％ CI,0.63-0.82)).Conclusion The plasma DNA concentration can accurately evaluate the prognosis in patients with sepsis.As compared with the plasma CRP concentration,APACHE Ⅱ score and SOFA score,the plasma DNA concentration is more accurate to evaluate the prognosis in patients with sepsis.