TO013ADSORPTION THERAPY AND SEPTIC SHOCK: A RETROSPECTIVE STUDY COMPARING COUPLED PLASMA FILTRATION-ADSORPTION AND CYTOSORB

Abstract

Abstract Background and Aims Septic shock is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Excessive release of cytokines and other inflammatory mediators is a key mechanism and cytokines adsorption therapies are applied in this context to restore a balanced immune homeostasis. Different adsorption techniques are available but there are no studies comparing these different adsorption approaches. The aim of this retrospective observational study was to compare Coupled Plasma Filtration Adsorption (CPFA) and CytoSorbTM in terms of hemodynamic and clinical response, mortality and renal function recovery. Method A retrospective observational study was designed enrolling all patients admitted to ICU with a diagnosis of septic shock treated with blood adsorption, either CPFA or CytoSorbTM, from January 2015 to December 2017. Primary endpoints of the study were the assessment of changes in NE dosage, MAP values, SOFA score and PCT levels before and after blood adsorption. Secondary endpoints ICU length of stay (LOS), mortality at 30, 60 and 90 days from adsorption initiation; renal outcome at 30 and 90 days from adsorption initiation. Results The study included 28 patients (14 CPFA, 14 CytosorbTM). Adsorption treatment was associated with a significant (p=0.03) improvement in hemodynamics with a Norepinephrine/Mean Arterial Pressure ratio (NE/MAP) of 0.64 (0.14-2.6) pre-treatment vs 0.11 (0.0-0.32) post-treatment regardless of the applied technique. Furthermore, a significant (p<0.001) procalcitonin (PCT) post treatment reduction was demonstrated with a comparable effect in the two groups (p=0.32) (Fig.1). No difference has been found in SOFA score changes (p=0.06) and again without any difference between groups (p=0.17). Overall Survival (OS) rate at 30 days was comparable between groups being 64.3% in CPFA and 78.6% in CytoSorbTM group (p=0.34). Finally, a complete recovery of kidney function at 30 and 90 days has been obtained in respectively 90% and 100% of survived patients without any difference between groups (p=1.00) (Fig.2). Conclusion These data confirmed the effectiveness of adsorption in terms of short-term clinical improvement independently from the applied technique, supporting the role of both these adjunctive therapies in septic shock treatment. CPFA and CytosorbTM have comparable effects in terms of hemodynamic improvement, clinical outcome, mortality and recovery of kidney function from septic shock AKI.