Endotoxin Activity Reflects an Increase in Body Temperature in Cirrhotic Patients With Ascites Undergoing Cell-free and Concentrated Ascites Reinfusion Therapy

Abstract

Background: Ascites commonly complicates cirrhosis and is refractory to the vasopressin-2 antagonist tolvaptan and fluid restriction in approximately 60% of patients. We aimed to identify risk factors associated with adverse events following cell-free and concentrated ascites reinfusion therapy (CART) in patients with cirrhosis and ascites.

Patients and methods: We evaluated the efficacy and tolerability to the CART system in 18 patients with decompensated liver cirrhosis and ascites. We determined serum endotoxin activity using endotoxin activity (EA) assays and serum and ascitic fluid concentrations of interleukin 6 (IL6) and tumor necrosis factor-α (TNFα) before and after the CART procedures.

Results: Body weight and waist circumference significantly decreased after CART (both p<0.001). Body temperature (BT) increased significantly at an average rate of 1.1°C during CART (p<0.001). The change in BT was correlated with EA and not interleukin IL6 or TNFα. The rise in BT was positively correlated with serum EA levels at baseline. The increase in BT was significantly higher in the group with high EA (≥0.37) than in the low EAA group (<0.37) (p=0.02). TNFα and serum IL6 levels in ascites were significantly increased during CART (both p<0.001). However, no significant differences in the EA, serum TNFα or IL6 levels were found in ascitic fluid before and after the CART procedures.

Conclusion: Although this discovery warrants further study, EA assay can indicate an increase in BT during effective CART in patients with cirrhosis and ascites.

Keywords: CART; Endotoxin activity assay; Liver cirrhosis; endotoxins; fever.