Procalcitonin (PCT), interleukin-6 (IL-6), tumour necrosis factor α (TNFα), and interleukin-1β (IL-1β) are important clinical prognostic markers in ICU septic patients. The goal of the study was to determine whether continuous venovenous haemofiltration (CVVH), using an AN69 haemofilter, leads to elimination of PCT, TNFα, IL-6 and IL-1β in 13 septic patients with multi-organ failure. At the start of haemofiltration (0), 6 and 12 hours the mean afferent plasma concentration

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